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Cat 4510 with SUP8-E VSL Link down after Power off

markus.bock
Level 1
Level 1

Hello,

 

we have running two Cat 4510 with four SUP8-E. The SUPs in slot 6 in both chassis are stopped in ROMMON and VSL was working fine and all ports are up and correctly aggregated.

In chassis 1 are ports Te1/5/1 and 1/6/1 bundled in etherchannel 64. In chassis 2 are ports Te2/5/1 and 2/6/1 bundled in etherchannel 63

We have powered off chassis 2 for a view hours because of working on the UPS system.

After powering on chassis 2 vss is coming up and seems to work correct. But the vsl link Te2/6/1 is shown as DOWN but link is up to Te1/6/1. 

Can anybody tell me why Te2/6/1 is not shown in the vsl link and how I can solve this?

SW-CORE#          sh switch virtual link port-channel

Executing the command on VSS member switch role = VSS Active, id = 1


Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      N - not in use, no aggregation
        f - failed to allocate aggregator

        M - not in use, no aggregation due to minimum links not met
        m - not in use, port not aggregated due to minimum links not met
        u - unsuitable for bundling
        d - default port

        w - waiting to be aggregated

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-------------------
64     Po64(SU)         -        Te1/5/1(P)  Te1/6/1(w)
63     Po63(SU)         -        Te2/5/1(P)  Te2/6/1(w)


Executing the command on VSS member switch role = VSS Standby, id = 2


Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      N - not in use, no aggregation
        f - failed to allocate aggregator

        M - not in use, no aggregation due to minimum links not met
        m - not in use, port not aggregated due to minimum links not met
        u - unsuitable for bundling
        d - default port

        w - waiting to be aggregated

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-------------------
64     Po64(SU)         -        Te1/5/1(P)  Te1/6/1(D)
63     Po63(SU)         -        Te2/5/1(P)

 

10 Replies 10

Leo Laohoo
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Look at the logs.  

balaji.bandi
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i would suggest to check the config of the 2/6/1  - make sure it belong to right port-channel is the config still exists or lost?

 

Once you see the interface available in port-channel check the any cables issue, make sure they patched correctly right ports ?

 

BB

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The config has not been changed and the interfaces are configured in the correct port-channel

 

interface TenGigabitEthernet1/5/1
 description VSL
 switchport mode trunk
 switchport nonegotiate
 no lldp transmit
 no lldp receive
 channel-group 64 mode on
 service-policy output VSL-Queuing-Policy
end

SW-CORE#sh run int ten 1/6/1
Building configuration...

Current configuration : 208 bytes
!
interface TenGigabitEthernet1/6/1
 description VSL
 switchport mode trunk
 switchport nonegotiate
 no lldp transmit
 no lldp receive
 channel-group 64 mode on
 service-policy output VSL-Queuing-Policy
end

SW-CORE#sh run int ten 2/5/1
Building configuration...

Current configuration : 208 bytes
!
interface TenGigabitEthernet2/5/1
 description VSL
 switchport mode trunk
 switchport nonegotiate
 no lldp transmit
 no lldp receive
 channel-group 63 mode on
 service-policy output VSL-Queuing-Policy
end

SW-CORE#sh run int ten 2/6/1
Building configuration...

Current configuration : 208 bytes
!
interface TenGigabitEthernet2/6/1
 description VSL
 switchport mode trunk
 switchport nonegotiate
 no lldp transmit
 no lldp receive
 channel-group 63 mode on
 service-policy output VSL-Queuing-Policy
end

In the lock I see that the sup has failed to boot. Both redundant sup8-e are in ROMMON mode

 

 

Nov 20 19:49:18: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: STANDBY:Power supply 1 has failed or been turned off
Nov 20 20:33:15: %FASTHELLO-2-FH_DOWN:  Fast-Hello interface Gi1/2/4 lost dual-active detection capability

Nov 20 20:33:15: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/5/1 left the port-channel Port-channel64
Nov 20 20:33:15: %VSLP-3-VSLP_LMP_FAIL_REASON: Te1/5/1: Link down
Nov 20 20:33:15: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/5/1 left the port-channel Port-channel63
Nov 20 20:33:15: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/6/1 left the port-channel Port-channel64
Nov 20 20:33:15: %VSLP-3-VSLP_LMP_FAIL_REASON: Te1/6/1: Link down
Nov 20 20:33:15: %VSLP-2-VSL_DOWN:   All VSL links went down while switch is in ACTIVE role

Nov 20 20:33:15: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/6/1 left the port-channel Port-channel63
Nov 20 20:33:15: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the peer Supervisor has been lost
Nov 20 20:33:15: %CHKPT-4-INVALID_ENTITY: Invalid checkpoint entity ID (1718908769).
Nov 21 01:16:55: %SSH-5-DISABLED: STANDBY:SSH 2.0 has been disabled
Nov 21 01:16:55: %SSH-5-ENABLED: STANDBY:SSH 2.0 has been enabled
Nov 21 01:17:20: %SPANTREE-5-TOPOTRAP: Topology Change Trap for vlan 1
Nov 21 01:18:24: %EC-5-BUNDLE: Interface Te2/5/2 joined port-channel Po65
Nov 21 01:18:27: %EC-5-UNBUNDLE: Interface Te2/5/2 left the port-channel Po65
Nov 21 01:18:26: %EC-5-BUNDLE: STANDBY:Interface Te2/5/2 joined port-channel Po65
Nov 21 01:18:27: %EC-5-UNBUNDLE: STANDBY:Interface Te2/5/2 left the port-channel Po65
Nov 21 01:19:52: %EC-5-BUNDLE: Interface Te2/5/2 joined port-channel Po65
Nov 21 01:19:52: %EC-5-BUNDLE: STANDBY:Interface Te2/5/2 joined port-channel Po65
Nov 21 01:26:28: %SFF8472-5-THRESHOLD_VIOLATION: Te1/6/1: Rx power low alarm; Operating value: -28.8 dBm, Threshold value: -13.9 dBm.
Nov 21 01:27:16: %C4K_SUPERVISOR-4-UNSUPPORTEDMODULE: STANDBY:Card in Slot(6) Failed to Boot

 

 

A couple of suggestions, take sup # 2 in each chassis out of the equation by taking them out of each chassis and just leave sup in slot 5 active and available in each chassis. After that reboot both chassis and hopefully everything boots as expected, if not you would need to open a ticket with TAC, so they can analyze the issue.

HTH 

No way. I only can try to reboot the redundant SUPs but not the acitve one. 

In that case, you can simply take the redundant sups out and redo the VSL Portchannels and hope it all comes back. Quad sup VSS issues are not simple. Any changes to the production switch should be done in a maintenance window as results can vary.

HTH

Post the complete output from BOTH units: 

sh module

balaji.bandi
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If you connected to console, then boot the Supervisor - once they come back only they should be able to form the connection ?

 

Looks like insufficient power or something failed - worth check you have enough power and both PSU are ON

 

 %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: STANDBY:Power supply 1 has failed or been turned off

 

BB

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No Power problem. Only the connector has been changed. This switch has four power supplies

can you post show modules from both the devices, looks some physical issue than config.

BB

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