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One of the VSL links in suspended mode after 'force switch-over'

Ji-Won Park
Level 1
Level 1

Hello all,

I keep getting the below alert while i'm running failover testing scenarios. Please let me know if there's anything missing or anyone experienced same issue before.. After I issue 'redundancy force-switchover' the fail-over happens but one of the VSL links is put in suspended mode.

*Sep 15 19:21:15.283: %EC-SW2-5-CANNOT_BUNDLE2: Te1/5/4 is not compatible with Te1/6/4 and will be suspended (Operational flow control receive of Te1/5/4 is on, Te1/6/4 is disagree)

*Sep 15 19:21:15.667: %EC-SW2-5-CANNOT_BUNDLE2: Te2/5/4 is not compatible with Te2/6/4 and will be suspended (Operational flow control receive of Te2/5/4 is disagree, Te2/6/4 is on)

1      Po1(RU)          -        Te1/5/4(s)     Te1/6/4(P)

2      Po2(RU)          -        Te2/5/4(w)     Te2/6/4(P)

##Setup

6506E-SUP2T VSS

IOS - 15.1(1)SY1

Te1/5/4, Te1/6/4 - Te2/5/4, Te2/6/4 are 2 x 10Gb VSL (Copper)

Gi1/2/48 is the heartbeat (Copper)

##Configuration

!

interface TenGigabitEthernet1/5/4

description VSL

no switchport

no ip address

no cdp enable

channel-group 1 mode on

end

!

interface TenGigabitEthernet1/6/4

description VSL

no switchport

no ip address

no cdp enable

channel-group 1 mode on

end

!

interface TenGigabitEthernet2/5/4

description VSL

no switchport

no ip address

no cdp enable

channel-group 2 mode on

end

!

interface TenGigabitEthernet2/6/4

description VSL

no switchport

no ip address

no cdp enable

channel-group 2 mode on

end

!

switch virtual domain 1

switch mode virtual

switch 1 priority 110

mac-address use-virtual

!

interface GigabitEthernet1/2/48

description VSL HEARTBEAT

no switchport

no ip address

no cdp enable

dual-active fast-hello

end

!

interface GigabitEthernet2/2/48

description VSL HEARTBEAT

no switchport

no ip address

no cdp enable

dual-active fast-hello

end

Thanks in advance.

J

3 Replies 3

Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

You configuration is correct.  You also have an issue with Te2/5/4(w) (waiting to be bundled). 

Can you test by putting both 10Gig ports on the same Sup?

it would be 1/5/4 and 1/5/5 for each chassis.

HTH

Hi Reza,

Te2/5/4 (w) is connected to Te1/5/4 (s). I will try to use 1/5/4,1/5/5 for VSL and post the output soon. I feel like i'm hitting a bug...

Thanks,

J

Hey Reza,

VSL Links seem to be okay when I'm using Te1/5/4&Te1/5/5 <-> Te2/5/4&Te2/5/5.

But using Te1/5/4&Te1/6/4 will give me more redundancy. Is there any reason why the port bundling fails when using two different SUP interfaces?

J