VPC cannot peer with the Secondary Peer

[syed_sam_gilani]

I am using [nxos.7.0.3.I5.2.bin] on eve-ng, the scenario is attached, and so is output.

I cant configure VPC with downstream switches, (Also Nexus same model).

All configuration is fine, i checked both with LACP Active and ON, same results, I changed NX-OS , still same.
I applied the APPLET, someone has given on some portal, still no results.....

I will be very obliged if anyone can help me please.........

Thank You & Stay Safe...

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

feature bash-shell
event manager applet HACK
description "HACK"
event syslog pattern "Configured from vty by root"
action 1.0 cli run bash sudo -u root cp /isan/bin/lacp /isan/bin/lacp2
action 2.0 cli run bash sudo -u root echo -e "00098830: 8c5f f7ff 85c0 7442 c685 9cfe ffff 01c6\n00098840: 859d feff ff80 c685 9efe ffff c2c6 859f\n00098850: feff ff00 c685 a0fe ffff 00c6 85a1 feff\n00098860: ff02 8b83 90fe ffff 8d95 9cfe ffff 8b0a" | sudo xxd -r - /isan/bin/lacp2
action 3.0 cli run bash sudo rm /isan/bin/lacp
action 4.0 cli run bash sudo mv /isan/bin/lacp2 /isan/bin/lacp
action 5.0 cli run bash sudo killall -9 lacp
action 6.0 event-default
event manager applet HACK2
description "HACK"
event syslog pattern "Supervisor 1 is active"
action 1.0 cli run bash sudo -u root cp /isan/bin/lacp /isan/bin/lacp2
action 2.0 cli run bash sudo -u root echo -e "00098830: 8c5f f7ff 85c0 7442 c685 9cfe ffff 01c6\n00098840: 859d feff ff80 c685 9efe ffff c2c6 859f\n00098850: feff ff00 c685 a0fe ffff 00c6 85a1 feff\n00098860: ff02 8b83 90fe ffff 8d95 9cfe ffff 8b0a" | sudo xxd -r - /isan/bin/lacp2
action 3.0 cli run bash sudo rm /isan/bin/lacp
action 4.0 cli run bash sudo mv /isan/bin/lacp2 /isan/bin/lacp
action 5.0 cli run bash sudo sleep 30
action 6.0 cli run bash sudo killall -9 lacp
action 7.0 event-default

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

MY SCENARIO OUTPUT

Core-A# show vpc br
Legend:
(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id : 1
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : primary
Number of vPCs configured : 2
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 30s)
Delay-restore SVI status : Timer is off.(timeout = 10s)
Operational Layer3 Peer-router : Disabled

vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ -------------------------------------------------
1 Po1 up 1

vPC status
----------------------------------------------------------------------------
Id Port Status Consistency Reason Active vlans
-- ------------ ------ ----------- ------ ---------------
3 Po3 up success success 1



4 Po4 up success success 1

====================================================
Core-B# show vpc br
Legend:
(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id : 1
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : secondary
Number of vPCs configured : 2
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 30s)
Delay-restore SVI status : Timer is off.(timeout = 10s)
Operational Layer3 Peer-router : Disabled

vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ -------------------------------------------------
1 Po1 up 1

vPC status
----------------------------------------------------------------------------
Id Port Status Consistency Reason Active vlans
-- ------------ ------ ----------- ------ ---------------
3 Po3 up success success 1



4 Po4 up success success 1

======================================================
Agg-A# show vpc br
Legend:
(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id : 2
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : primary
Number of vPCs configured : 1
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 30s)
Delay-restore SVI status : Timer is off.(timeout = 10s)
Operational Layer3 Peer-router : Disabled

vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ -------------------------------------------------
1 Po2 up 1

vPC status
----------------------------------------------------------------------------
Id Port Status Consistency Reason Active vlans
-- ------------ ------ ----------- ------ ---------------
3 Po3 up failed Peer does not have corresponding vPC

=========================================================
Agg-B# show vpc br
Legend:
(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id : 2
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : secondary
Number of vPCs configured : 1
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 30s)
Delay-restore SVI status : Timer is off.(timeout = 10s)
Operational Layer3 Peer-router : Disabled

vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ -------------------------------------------------
1 Po2 up 1

vPC status
----------------------------------------------------------------------------
Id Port Status Consistency Reason Active vlans
-- ------------ ------ ----------- ------ ---------------
4 Po4 down* failed Peer does not have corresponding vPC -

[marce1000]

 - Use this guide for help :

       https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/troubleshooting/guide/b_Cisco_Nexus_9000_Series_NX-OS_Troubleshooting_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_Troubleshooting_Guide_7x_chapter_0110.pdf

 M.

[balaji.bandi]

if this is LAB environment - get NXOSv 7.0.3.I7.2  for the VPC to work as expected.

https://www.balajibandi.com/?p=618

[syed_sam_gilani]

I was using the same but as i mentioned in port, i changed from 17 to 15, still the result is same...

Am I missing something related to Spanning-Tree and vPC ???

[paul driver]

Hello

---

@syed_sam_gilani wrote:

3 Po3 up failed Peer does not have corresponding vPC
4 Po4 down* failed Peer does not have corresponding vPC -

---

Check these PC , do they have correct vpc applied to them?, Have you tried defaulting the related interfaces and PCs and recreating them?

[syed_sam_gilani]

Dear Paul,

The vPC's are applied properly 

[MHM Cisco World · Accepted solution]

double-sided vPC, 
config the upper and lower ether channel with only ONE vPC.

config different domain in upper and lower vPC.

[syed_sam_gilani]

Thanks a tonnsssss....
I solved it... though i saw ur reply just now, still you helped me in CONFIRMATION...
Thanks a million,,,, I think i was making mistake in the scenario....
Once again thanks

[MHM Cisco World]

You Are so so welcome Bro any time.