Re: vPC Type-2 consistency chexk not performed

qasim khan · ‎09-29-2020

HI

Inhave just rebooted a pair of 9300 switches and now its showing type 2 inconsistency check not performed. I have double checked the complete config and theres not inconsistency.

Any idea what might be causing this?

Christopher Hart · ‎09-29-2020

Hi Qasim,

Can you share the output of show module and show vpc brief from both Nexus 9300 switches encountering this issue?

Thank you!

-Christopher

qasim khan · ‎09-29-2020

Sure, I will share that first thing in the morning.

But just so you know I have double checked it's a 100% match.

Having said that, there are no SVI on the switch and interface vlan feature disabled but so is in other similar switches and they have no such issues.

Ita running nxos version 7.0

3.I4.2

And everything else is showing success.

Thanks

qasim khan · ‎09-30-2020

Hi,

Here is the output as requested:

switch 1
Mod Ports Module-Type Model Status
--- ----- ------------------------------------- --------------------- ---------
1 54 48x10/25G + 6x40/100G Ethernet Module N9K-C93180YC-EX active *

Mod Sw Hw Slot
--- ---------------- ------ ----
1 7.0(3)I4(2) 1.0 NA

Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 00-a2-ee-28-xx-xx-xx to 00-a2-ee-xx-xx-xx FDO203xxxxxx

Mod Online Diag Status
--- ------------------
1 Pass

* this terminal session

switch 2
Mod Ports Module-Type Model Status
--- ----- ------------------------------------- --------------------- ---------
1 54 48x10/25G + 6x40/100G Ethernet Module N9K-C93180YC-EX active *

Mod Sw Hw Slot
--- ---------------- ------ ----
1 7.0(3)I4(2) 1.0 NA

Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 00-a6-ca-xx-xx-xx to 00-a6-ca-xx-xx-xx FDO203xxxxx

Mod Online Diag Status
--- ------------------
1 Pass
switch 1
* this terminal session

vPC domain id : 750
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 inconsistency reason : Consistency Check Not Performed
vPC role : secondary
Number of vPCs configured : 1
Peer Gateway : Enabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 300s)
Delay-restore SVI status : Timer is off.(timeout = 10s)

vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po99 up 1,560,999-1001,1008-1010,1200-1208,1216-1222,1230-
1233,1245-1250,2621

vPC status
----------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
-- ---- ------ ----------- ------ ------------
311 Po97 up success success 1,560,999-1
001,1008-10
10,1200-120
8,1216-1222
,1230-1233, ....

switch 2
vPC domain id : 750
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 inconsistency reason : Consistency Check Not Performed
vPC role : primary
Number of vPCs configured : 1
Peer Gateway : Enabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
Delay-restore status : Timer is off.(timeout = 300s)
Delay-restore SVI status : Timer is off.(timeout = 10s)

vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po99 up 1,560,999-1001,1008-1010,1200-1208,1216-1222,1230-
1233,1245-1250,2621

vPC status
----------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
-- ---- ------ ----------- ------ ------------
311 Po97 up success success 1,560,999-1
001,1008-10
10,1200-120
8,1216-1222
,1230-1233, ....

Christopher Hart · ‎09-30-2020

Hi Qasim,

This output is expected behavior when neither vPC peer is configured with any SVIs (which is something you eluded to in your original post).

However, you also mentioned that you do not see this same output on other vPC pairs of switches that also do not have any SVIs configured. Can you share the output of the below commands from both switches in one of these vPC pairs?

terminal width 511
show vpc brief
show ip interface brief vrf all
show running-config | include feature

Thank you!

-Christopher

qasim khan · ‎09-30-2020

Hi mate,

thanks for your swift response. Please find attached as requested.

switch 1 and 2 are one VPC pair with the issue and switch 3 belongs to a different VPC with no issues however, same OS version and model.