09-12-2016 11:54 PM
My company setup a logical chassis cluster, but i want avoid any servers or switch direct connect to this cluster have loop happen.
But when i read then document found ELD on VCS Fabric clusters.
Who have examples can let me reference how to use ELD on Logical chassis mode on port-channel
09-14-2016 06:16 AM - edited 09-14-2016 06:16 AM
Edge Loop Detection (ELD) can be enabled on port-channels on a per VLAN basis, it should be enabled under the port-channel configuration as follows:
interface Port-channel 100
switchport mode trunk
switchport trunk allowed vlan add 10,20,30-35
switchport trunk tag native-vlan
edge-loop-detection vlan 10,20,30-35
It is also important to note that ELD has a maximum number of instances allowed per fabric, this can vary depending on version of NOS being used, in NOS 6 (limit is 2000) you should check release notes for your version to confirm.
An instance is defined as vlan/interface combination so in the example above this would utilise 8 instances
09-14-2016 07:24 PM
In fact i want to know if some port-channel has two many member then when ELD happen then in this port-channel which port will be disable.
In port-channel the edge-loop-detection port-pri have any meaning ?
09-15-2016 01:44 AM
When a loop is detected by ELD the port with the highest priority would be the port that should be shut down.
Priority range is 1-255, default is 128
Hope this answers your question
09-15-2016 03:24 PM
Edge- command only can apply switch port interface, so port-channel member can't use edge command then how can I setup
port-channel member edge-loop priority command ........
09-16-2016 12:25 AM
You are correct in this instance the port-channel configuration is part of the global configuration so any change to port-priority under port-channel would apply to all Rbridge.
I believe that the default behaviour is that, in the event that a loop being detected by ELD the non active primary of the port-channel would be the port that would go into blocking state.