06-21-2014 04:49 AM - edited 03-07-2019 07:48 PM
Hello,
regarding stacking and etherchannel
follow the below network diagram.
Note: r3,r4 are cisco 3750x switches and r4 is hirschmann mach104-20tx-f switch
how can i achieve physical-redundancy(etherchannel) from r4 to r3,r6
is it possible to create etherchannel(r4) with two different switch(r3,r6) sources.
is there any specific rules for etherchannel with stacking ?
Solved! Go to Solution.
06-21-2014 07:45 AM
is it possible to create etherchannel(r4) with two different switch(r3,r6) sources.
Yes it is possible and it's very common you can form an etherchannel to a stack of switches.
is there any specific rules for etherchannel with stacking ?
Same rule applies: Maximum of eight etherchannels and all physical link should be of the same speed.
When configuring etherchannels on a switch stack always remember to think of the stack as a SINGLE LOGICAL SWITCH (and not as a multiple switches that form a stack).
06-22-2014 12:32 PM
Of course it is possible achieve.This method is called cross stack ether channel.Even though Cisco's proprietary protocol PAgP doesn't support it,with LACP and without the ether-channel negotiation (ON)protocol also we can do it.Please check the IOS version because Only Software Release 12.2(25)SEC and later support cross stack ether channel.please refer the below document.Pl
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/69979-cross-stack-etherchannel.html#config2
Regards
PrajithTR
06-21-2014 07:45 AM
is it possible to create etherchannel(r4) with two different switch(r3,r6) sources.
Yes it is possible and it's very common you can form an etherchannel to a stack of switches.
is there any specific rules for etherchannel with stacking ?
Same rule applies: Maximum of eight etherchannels and all physical link should be of the same speed.
When configuring etherchannels on a switch stack always remember to think of the stack as a SINGLE LOGICAL SWITCH (and not as a multiple switches that form a stack).
06-22-2014 12:32 PM
Of course it is possible achieve.This method is called cross stack ether channel.Even though Cisco's proprietary protocol PAgP doesn't support it,with LACP and without the ether-channel negotiation (ON)protocol also we can do it.Please check the IOS version because Only Software Release 12.2(25)SEC and later support cross stack ether channel.please refer the below document.Pl
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/69979-cross-stack-etherchannel.html#config2
Regards
PrajithTR
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide