4.

2 releases
Lab set up:

N7k1# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
----------------------------------------------------------------------

id
-3

Port
---Po200

Status Consistency Reason

Active vlans
------ ----------- -------------------------- -----------up
success
success
1-2

N7k1# show vpc peer-keepalive

vPC keep-alive status
--Peer is alive for
--Send status
--Last send at
--Sent on interface
--Receive status
--Last receive at
--Received on interface
--Last update from peer

:
:
:
:
:
:
:
:
:

peer is alive
(102) seconds, (379) msec
Success
2010.06.04 20:33:49 552 ms
Eth3/14
Success
2010.06.04 20:33:49 919 ms
Eth3/14
(0) seconds, (202) msec

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.2
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

N7k1# show port-channel summary

Flags: D - Down
P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended
r - Module-removed
S - Switched
R - Routed
U - Up (port-channel)
------------------------------------------------------------------------------Group PortType
Protocol Member Ports
Channel
------------------------------------------------------------------------------1
Po1(SU)
Eth
LACP
Eth2/13(P)
Eth2/14(P)
200
Po200(SU)
Eth
LACP
Eth3/3(P)
N7k2# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans

-1

---Po1

------ -------------------------------------------------up
1-2

vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show vpc peer-keepalive
vPC keep-alive status
--Peer is alive for
--Send status
--Last send at
--Sent on interface
--Receive status
--Last receive at
--Received on interface
--Last update from peer

:
:
:
:
:
:
:
:
:

peer is alive
(81) seconds, (144) msec
Success
2010.06.03 19:57:09 784 ms
Eth3/14
Success
2010.06.03 19:57:10 428 ms
Eth3/14
(0) seconds, (36) msec

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.1
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

N7k2# show port-channel summary

Flags: D - Down
P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended
r - Module-removed
S - Switched
R - Routed
U - Up (port-channel)
------------------------------------------------------------------------------Group PortType
Protocol Member Ports
Channel
------------------------------------------------------------------------------1
Po1(SU)
Eth
LACP
Eth1/9(P)
Eth1/10(P)
2
Po2(RD)
Eth
NONE
-200
Po200(SU)
Eth
LACP
Eth3/3(P)

1) Scenario #1 - peer-link goes down, then, keepalive goes down as

well.
N7k1# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
Peer status

: 3
: peer adjacency formed ok

vPC keep-alive status

:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

peer is alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
===========================================================
Peer-link went down:
N7k1(config-if)# int po1
N7k1(config-if)# shut
===========================================================
N7k1(config-if)# show vpc
Legend:

(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
peer is alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# 2010 Jun 3 19:58:23.197 N7k2 %$ VDC-1 %$ %VPC-2VPC_SUSP_ALL_VPC: Peer-link going down, suspending all vPCs on
secondary
N7k2# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 down
success
success
===========================================================
Peer-keepalive went down as well:

N7k1(config-if)# int e3/14

N7k1(config-if)# shut
===========================================================
N7k1(config-if)# 2010 Jun 4 20:35:27 N7k1 %$ VDC-1 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 3, VPC peer keep-alive receive has
failed
N7k1(config-if)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
peer is not alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k1(config-if)# show vpc peer-keepalive
vPC keep-alive status
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer

:
:
:
:
:
:

peer is not alive

Success
2010.06.04 20:35:54 958 ms

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.2
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Failed
(32) seconds, (862) msec

N7k2# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
peer is not alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 down
failed
Peer-link is down
N7k2# show vpc peer-keepalive
vPC keep-alive status
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer

:
:
:
:
:
:

peer is not alive

Success
2010.06.03 20:00:05 674 ms

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos
N7k2#

:
:
:
:
:
:
:

1.1.1.1
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Failed
(62) seconds, (398) msec

SUMMARY:
When peer-link goes down, all vPC link on the secondary will be
suspended.
2) Scenario #2 peer-keepalive link goes down, then peer-link goes
down as well.
N7k1# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
Peer status
vPC keep-alive status

: 3
: peer adjacency formed ok
: peer is alive

Configuration consistency status:

Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
===========================================================
Peer-keepalive went down:
N7k1(config-if)# int e3/14
N7k1(config-if)# shut
===========================================================
N7k1(config-if)# 2010 Jun 4 20:41:02 N7k1 %$ VDC-1 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 3, VPC peer keep-alive receive has
failed

N7k1(config-if)# show vpc peer-keepalive

vPC keep-alive status
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer

:
:
:
:
:
:

peer is not alive

Success
2010.06.04 20:41:41 44 ms

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos
N7k1(config-if)#

:
:
:
:
:
:
:

1.1.1.2
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Failed
(43) seconds, (106) msec

N7k1(config-if)# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is not alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show vpc peer-keepalive
vPC keep-alive status
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer

:
:
:
:
:
:

peer is not alive

Success
2010.06.03 20:05:08 354 ms

vPC Keep-alive parameters

--Destination

: 1.1.1.1

Failed
(30) seconds, (104) msec

--Keepalive
--Keepalive
--Keepalive
--Keepalive
--Keepalive
--Keepalive

interval
timeout
hold timeout
vrf
udp port
tos

:
:
:
:
:
:

1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

N7k2# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is not alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
===========================================================
Peer-link went down as well:
N7k1(config-if)# int po1
N7k1(config-if)# shut
===========================================================
N7k1(config-if)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
reachable)
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:
vPC Peer-link status

3
peer link is down
Suspended (Destination IP not
success
success
primary
1
Disabled
-

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k1(config-if)# show vpc peer-keepalive
vPC keep-alive status
reachable)
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer
vPC Keep-alive parameters
--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

: Suspended (Destination IP not

:
:
:
:
:

Success
2010.06.04 20:43:01 28 ms

:
:
:
:
:
:
:

1.1.1.2
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Failed
(123) seconds, (960) msec

N7k2# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
reachable)
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
Suspended (Destination IP not
success
success
secondary, operational primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2

N7k2# show vpc peer-keepalive

vPC keep-alive status
reachable)
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer

: Suspended (Destination IP not

:
:
:
:
:

Failed
(101) seconds, (204) msec

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.1
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Success
2010.06.03 20:06:19 174 ms

SUMMARY:
When keep-alive goes down, vPC peer devices make aware of each other
via peer-link. When peer-link goes down as well, both of the vPC peer
devices can no longer make aware of each other, thus, they both claim
themselves as the primary. Dual-active happened.
3) Scenario #3 pee-keepalive link and peer-link go down at the same
time.
N7k1# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
===========================================================
Peer-link and peer-keepalive link goes down at the same time:
N7k1(config-if-range)# int e2/13-14, e3/14
N7k1(config-if-range)#
N7k1(config-if-range)# shut
===========================================================
2010 Jun 4 20:47:06 N7k1 %$ VDC-1 %$ %VPC-2-PEER_KEEP_ALIVE_RECV_FAIL:
In domain 3, VPC peer keep-alive receive has failed
N7k1(config-if-range)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
reachable)
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
Suspended (Destination IP not
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
-

vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k1(config-if-range)# show vpc peer-keepalive
vPC keep-alive status
reachable)
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer
vPC Keep-alive parameters
--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

: Suspended (Destination IP not

:
:
:
:
:

Success
2010.06.04 20:48:16 743 ms

:
:
:
:
:
:
:

1.1.1.2
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Failed
(76) seconds, (221) msec

N7k2# 2010 Jun 3 20:10:47.854 N7k2 %$ VDC-1 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 3, VPC peer keep-alive receive has
failed
N7k2# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
reachable)
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
Suspended (Destination IP not
success
success
secondary, operational primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2

N7k2# show vpc peer-keepalive

vPC keep-alive status
reachable)
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer

: Suspended (Destination IP not

:
:
:
:
:

Success
2010.06.03 20:11:12 544 ms

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.1
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

Failed
(30) seconds, (121) msec

SUMMARY:
Same as scenario #3 - Dual-active happened in this scenario.
4) Scenario #4 - Object tracking is enabled.
down - module 2 failure on N7k1.
N7k1(config-if-range)# show track list boolean
Track 1
List Boolean or
Boolean or is UP
1 changes, last change 00:11:19
Track List Members:
object 101 UP
object 100 UP
Tracked by:
vPCM
3
N7k1(config-if-range)# show track 100
Track 100
Interface Ethernet2/18 Line Protocol
Line Protocol is UP
1 changes, last change 00:11:46
Tracked by:
vPCM
3
Track List 1
N7k1(config-if-range)# show track 101
Track 101
Interface port-channel1 Line Protocol
Line Protocol is UP
17 changes, last change 00:01:36
Tracked by:
vPCM
3
Track List 1
N7k1(config)# show vpc

All tracked objects are

or

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
primary, operational secondary
1
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show track 1
Track 1
List Boolean or
Boolean or is UP
1 changes, last change 02:32:50
Track List Members:
object 101 UP
object 100 UP
Tracked by:
vPCM
3
N7k2# show track 100
Track 100
Interface port-channel1 Line Protocol
Line Protocol is UP
19 changes, last change 00:00:35
Tracked by:
vPCM
3
Track List 1
N7k2# show trac 101
Track 101
Interface Ethernet2/17 Line Protocol
Line Protocol is UP
1 changes, last change 02:33:16
Tracked by:
vPCM
3
Track List 1
N7k2# show vpc
Legend:

(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
===========================================================
All track objects went down:
N7k1(config-if-range)# int e2/13-14, e2/18
N7k1(config-if-range)# shut
===========================================================
N7k1(config-if-range)#
2010 Jun 4 21:09:02 N7k1 %$ VDC-1 %$ %VPC-2-VPC_SUSP_ALL_VPC: Peerlink going down, suspending all vPCs on secondary
2010 Jun 4 21:09:02 N7k1 %$ VDC-1 %$ %VPC-2-TRACK_INTFS_DOWN: In
domain 3, vPC tracked interfaces down, suspending all vPCs and keepalive
N7k1(config-if-range)#
N7k1(config-if-range)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
peer is alive
success
success
primary, operational secondary
1
1
Disabled
-

vPC Peer-link status

---------------------------------------------------------------------

id
-1

Port
---Po1

Status Active vlans

------ -------------------------------------------------down
-

vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 down
success
success
N7k2(config-if)# 2010 Jun 3 20:32:48.204 N7k2 %$ VDC-1 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 3, VPC peer keep-alive receive has
failed
N7k2(config-if)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
peer is alive
success
success
secondary, operational primary
1
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
SUMMARY:
With Object Tracking enabled, when all track object goes down, primary
vPC will suspend all its vPC links and becomes secondary. On the other
hand, secondary will become primary and all its vPC links will stay up.
5) Scenario #5 - With Object Tracking enabled, all track objects failed
(mod 2 failure on N7k1) AND peer-keepalive link goes down at the same
time.
N7k1(config-if-range)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id

: 3

Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

peer adjacency formed ok

peer is alive
success
success
primary, operational secondary
1
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
===========================================================
All track objects and peer-keepalive link went down:
N7k1(config-if-range)# int e2/13-14, e2/18, e3/14
N7k1(config-if-range)# shut
===========================================================

2010 Jun 4 21:12:21 N7k1 %$ VDC-1 %$ %VPC-2-PEER_KEEP_ALIVE_RECV_FAIL:

In domain 3, VPC peer keep-alive receive has failed
2010 Jun 4 21:12:21 N7k1 %$ VDC-1 %$ %VPC-2-TRACK_INTFS_DOWN: In
domain 3, vPC tracked interfaces down, suspending all vPCs and keepalive
N7k1(config-if-range)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
reachable)
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
Suspended (Destination IP not
success
success
primary
1
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 down
success
success
N7k2(config-if)# 2010 Jun 3 20:36:02.054 N7k2 %$ VDC-1 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 3, VPC peer keep-alive receive has
failed
N7k2(config-if)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
reachable)
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Track object
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer link is down
Suspended (Destination IP not
success
success
secondary, operational primary
1
1
Disabled
-

vPC Peer-link status

---------------------------------------------------------------------

id
-1

Port
---Po1

Status Active vlans

------ -------------------------------------------------down
-

vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
SUMMARY:
Object Tracking kicks in, all vPC links on primary are suspended and
all vPC links on secondary stay up. Since keepalive is also down, both
vPC peer devices claim themselves as primary. Dual-active happened.
6) Scneario #6 N7k1 has power failure, the entire switch is shut
down.
N7k1(config-if)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
primary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k1(config-if)# show vpc peer-keepalive
vPC keep-alive status
--Peer is alive for
--Send status
--Last send at
--Sent on interface
--Receive status
--Last receive at
--Received on interface
--Last update from peer

:
:
:
:
:
:
:
:
:

peer is alive
(236062) seconds, (85) msec
Success
2010.06.07 17:04:49 515 ms
Eth3/14
Success
2010.06.07 17:04:49 515 ms
Eth3/14
(0) seconds, (590) msec

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.2
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

N7k2(config-if)# show vpc

Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
:
Peer status
:
vPC keep-alive status
:
Configuration consistency status:
Type-2 consistency status
:
vPC role
:
Number of vPCs configured
:
Peer Gateway
:
Dual-active excluded VLANs
:

3
peer adjacency formed ok
peer is alive
success
success
secondary
1
Disabled
-

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
up
1-2
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2(config-if)# show vpc peer-keepalive
vPC keep-alive status
--Peer is alive for
--Send status
--Last send at
--Sent on interface
--Receive status
--Last receive at
--Received on interface
--Last update from peer

:
:
:
:
:
:
:
:
:

peer is alive
(114) seconds, (966) msec
Success
2010.06.06 16:28:02 154 ms
Eth3/14
Success
2010.06.06 16:28:02 155 ms
Eth3/14
(0) seconds, (759) msec

vPC Keep-alive parameters

--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

:
:
:
:
:
:
:

1.1.1.1
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

===========================================================

Powered down N7k1

===========================================================
N7k1(config-if)#
2010 Jun 7 17:05:10 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_CAPACITY_CHANGE:
Power supply PS2 changed its capacity. possibly due to power cable
removal/insertion (Serial number DTH1213T028)
2010 Jun 7 17:05:10 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_CAPACITY_CHANGE:
Power supply PS3 changed its capacity. possibly due to power cable
removal/insertion (Serial number DTH1213T043)
2010 Jun 7 17:05:10 N7k1 %$ VDC-1 %$ %CALLHOME-2-EVENT:
POWER_SUPPLY_ALERT
2010 Jun 7 17:05:10 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_PWR_INPUT_MISSING:
Power supply 2 present but all AC/DC inputs are not connected, power
redundancy might be affected
2010 Jun 7 17:05:10 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_PWR_INPUT_MISSING:
Power supply 3 present but all AC/DC inputs are not connected, power
redundancy might be affected
2010 Jun 7 17:05:12 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_CAPACITY_CHANGE:
Power supply PS1 changed its capacity. possibly due to power cable
removal/insertion (Serial number DTH1213T118)
2010 Jun 7 17:05:12 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_CAPACITY_CHANGE:
Power supply PS3 changed its capacity. possibly due to power cable
removal/insertion (Serial number DTH1213T043)
2010 Jun 7 17:05:12 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_PWR_INPUT_MISSING:
Power supply 1 present but all AC/DC inputs are not connected, power
redundancy might be affected
2010 Jun 7 17:05:12 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_PWR_INPUT_MISSING:
Power supply 3 present but all AC/DC inputs are not connected, power
redundancy might be affected
2010 Jun 7 17:05:14 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_CAPACITY_CHANGE:
Power supply PS2 changed its capacity. possibly due to power cable
removal/insertion (Serial number DTH1213T028)
2010 Jun 7 17:05:14 N7k1 %$ VDC-1 %$ %PLATFORM-2-PS_PWR_INP
N7k2(config-if)#
2010 Jun 6 16:28:43 N7k2-DALE %$ VDC-3 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 1, VPC peer keep-alive receive has
failed
2010 Jun 6 16:28:43.544 N7k2 %$ VDC-1 %$ %VPC-2PEER_KEEP_ALIVE_RECV_FAIL: In domain 3, VPC peer keep-alive receive has
failed
N7k2(config-if)# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id
: 3
Peer status
: peer link is down
vPC keep-alive status
: Suspended (Destination IP not
reachable)
Configuration consistency status: success
Type-2 consistency status
: success
vPC role
: secondary, operational primary

Number of vPCs configured

Peer Gateway
Dual-active excluded VLANs

: 1
: Disabled
: -

vPC Peer-link status

--------------------------------------------------------------------id
Port
Status Active vlans
---------- -------------------------------------------------1
Po1
down
vPC status
---------------------------------------------------------------------id
Port
Status Consistency Reason
Active vlans
---------- ----------- -------------------------- -----------3
Po200 up
success
success
1-2
N7k2(config-if)# show vpc peer-keepalive
vPC keep-alive status
reachable)
--Send status
--Last send at
--Sent on interface
--Receive status
--Last update from peer
vPC Keep-alive parameters
--Destination
--Keepalive interval
--Keepalive timeout
--Keepalive hold timeout
--Keepalive vrf
--Keepalive udp port
--Keepalive tos

: Suspended (Destination IP not

:
:
:
:
:

Success
2010.06.06 16:35:27 444 ms
Failed
(409) seconds, (19) msec

:
:
:
:
:
:
:

1.1.1.1
1000 msec
5 seconds
3 seconds
vpc-keepalive
3200
192

SUMMARY:
After a power failure on the primary, the secondary will become primary
and all traffic continues to pass thru.