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New Member

4500-x vss

i am running 4500-x in vss mode. I have set of stackable upstream switches (2960s) that does not support epagp. I cant use fast hello because my ios on 4500x does not support it and dont want to upgrade it. i dont want to use pagp and terminate all links on 1  access switch.

 

i was wondering if this will work ?

 

on 4500x i have configured

switch virtual domain 10
 switch mode virtual
 switch 1 priority 110
 mac-address use-virtual
!
 dual-active detection pagp trust channel-group 100
 

interface Port-channel100
 description Test
 switchport
 switchport mode trunk
 

interface TenGigabitEthernet1/1/1
 switchport mode trunk
 channel-protocol lacp
 channel-group 100 mode active
 

interface TenGigabitEthernet2/1/1
 switchport mode trunk
 channel-protocol lacp
 channel-group 100 mode active
 

Upstream access switches (2960s)

int port-channel 1

switchport mode trunk
spanning-tree guard loop

 

interface GigabitEthernet1/0/1
 switchport mode trunk
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 1 mode active
end
 

interface GigabitEthernet1/0/2
  switchport mode trunk
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 1 mode active
end
 

5 REPLIES
Cisco Employee

Below link is similar to your

Below link is similar to your issue:

https://supportforums.cisco.com/discussion/12254161/port-channel-2960-stack-4500x-vss-stack

If that doesnt help we can provide some more details to you.

 

HTH

 

 

New Member

the above link states about

the above link states about using etherchannel for ip phone. i want to know between 2960s access switches and 4500x cani use LACP? if so what will be the redudancy mechanism ? can dual-active detection pagp trust channel-group 100 be used failover

Cisco Employee

Netpro,you had the same

Netpro,

you had the same discussion earlier;

https://csc-test1.cisco.com/discussion/12246891/cisco-4500x-vss-mec

Did this not help I see almost all the option listed there for you.

 

New Member

yes thats correct but i am

yes thats correct but i am not sure if the failover is working correctly. hence i have attached teh config above. do you think this is going to work ?

running

dual-active trust detection pagp port-channel xx

 

and using lacp on port-channel that connect to 2960s switches ?

 

I read somewhere trust pagp and using lacp wont work ? please let me know what you thoughts are ?

 

 

New Member

any thoughts please ?

any thoughts please ?

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