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Cisco Bug: CSCus31100 - N56K/6K: After upgrade to 7.1(0)N1(1) VPCs in down state

Last Modified

Mar 06, 2018

Products (10)

  • Cisco Nexus 6000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5624Q Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5696Q Switch
  • Cisco Nexus 56128P Switch

Known Affected Releases

7.1(0)N1(1) 7.1(1)N1(0.78)

Description (partial)

After a disruptive upgrade of a Nexus 5600/6000 to NX-OS 7.1(0)N1(1), vPCs will fail to come up on the newly upgraded switch. VPCs will be in a down state due to Global compat check failed

esc-5672-right# sh vpc brief 
                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 572 
Peer status                       : peer adjacency formed ok      
vPC keep-alive status             : peer is alive                 
Configuration consistency status  : failed  
Per-vlan consistency status       : success                       
Configuration inconsistency reason: invalid argument to function call
Type-2 consistency status         : success 
vPC role                          : primary, operational secondary
Number of vPCs configured         : 3   
Peer Gateway                      : Disabled
Dual-active excluded VLANs        : -
Graceful Consistency Check        : Enabled
Auto-recovery status              : Enabled (timeout = 240 seconds)

vPC Peer-link status
id   Port   Status Active vlans    
--   ----   ------ --------------------------------------------------
1    Po572  up     1-10                                                      

vPC status
id     Port        Status Consistency Reason                     Active vlans
------ ----------- ------ ----------- -------------------------- -----------
119    Po119       down*  failed      Global compat check failed -           
129    Po129       down*  failed      Global compat check failed -           
148    Po148       down*  failed      Global compat check failed -

Seen after a disruptive NX-OS upgrade to 7.1(0)N1(1) of a Nexus 5600/6000 with vPCs configured. This issue is seen in a upgrade scenario of switches in vPC domain where one switch is running 7.1(0)N1(1) and the other switch is yet to be upgraded. This bug is seen after a disruptive NX-OS upgrade of Nexus 5600/6000 to NX-OS 7.1(0)N1(1). This bug is NOT seen in Nexus 5548/5596 series switches.
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