Etherchannel on Cisco 2960S

[broow]

what is the maximum number of etherchannels i can build on a Cisco 2960S stack.  We hoping  to connected 15 servers using 2 port channels between two stacked 2960 for redunancey.  So what is the max number of channels can i build using the 2960S?  Is the max 6 or is it more?

[Bilal Nawaz · Accepted solution]

Hello - the cisco document states that:

 EtherChannel Configuration Guidelines 
Note Stacking is supported only on Catalyst 2960-S switches running the LAN base image. 
If improperly configured, some EtherChannel ports are automatically  disabled to avoid network loops and other problems. Follow these  guidelines to avoid configuration problems: 
 •Do not try to configure more than 6 EtherChannels on the switch stack. 
 - Configure a PAgP EtherChannel with up to eight Ethernet ports of the same type. 
- Configure  a LACP EtherChannel with up to16 Ethernet ports of the  same type. Up to  eight ports can be active, and up to eight ports can  be in standby  mode. 

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_53_se/configuration/guide/swethchl.html#wp1275881

Maximum I have ever encountered has been 6.

Hope this helps

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[Steve Fuller · Accepted solution]

Hi,

As per the EtherChannel Configuration Guidelines in the Configuring EtherChannels and Link-State Tracking section of the software configuration guide the limit is six:

Follow these guidelines to avoid configuration problems:

• Do not try to configure more than 6 EtherChannels on the switch stack.

Regards

[broow]

thanks

[broow]

thanks