Cisco Recommends to enable UDLD on etherchannel and Loop Guard on Non designated ports(Root and backup) . if there are 2 core with STP loadBalancing so the EtherChannel will be No-designated for some vlans So my questions is that Can i enable both of UDLD and Loop Guard on the etherchannel ports?
UDLD & loopguard are the methods of preventing abnormal conditions in stp due to unidirectional communication. When udld is enabled on interface, it sends udld pkts & waits for the response from connectd neighbor. If its not recvd, udld considers the interface as unidirectional & shutdown.
Manual intervention required to make the port operational.
Loopguard on the other hand, puts the port in loop-inconsistent state in case of unidirectional condition i.e. when bpdus are sent but not recvd. When the port starts recving the bpdus, again stp calculation is run & port is transitioned to a suitable state. no manual intervention required. Loopguard only aplies to active vlan instances on the port.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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