Etherchannel

[kabeer350]

hi

yesterday i try to make layer 2 ether channel when i provide encapsulation dot1 q in Cisco 2960 switch it not accept on the other side  Cisco 3560 accept this command.

Second when all configuration has been done the Cisco 2960 switch ether channel  one time  up and goes down state like this (d) and other side 3560 show suspended  like  (s)

plz can you send ether channel and trunk commands which i see where i do mistake

[Martin Carr]

The reason is the 3560 supports both ISL and DOT1Q, hence you need to specify the same, 2960 does the latter only.

Post your EC configuration...

Martin

[John Blakley · Accepted solution]

Double post ... I answered you in the other thread

[Rahul Chhabra · Accepted solution]

Hi Kabeer,

Please check out your configuration as I mentioned:

On both switches:

int range f0/0-1
switchport trunk encapsulation dot1q
switchport mode trunk
channel group 10 mo active (for Lacp)
no shut
exit

Some of the restrictions which should be match both sides:

1) Speed
2) Duplex
3) STP mode
4) Vlan membership (for access ports)
5) Native Vlan (for trunk link)
6) Allowed vlans (on trunks)
7) Trunking Encapsulation

Regards,
Rahul Chhabra
Network Engineer
Spooster IT Services