Configuring Port-Channel Interfaces
Configure Port-Channel Interfaces
Configure the LACP Port Priority
Configure the LACP System Priority
Configure Port Channel Load Balancing
Configure the LACP System Identifier
Configure the LACP Port Identifier
Set the MTU Value on one or More Ports
Set the MTU Value of the Port Channel
Whenever you create a port channel, the channel is added as an untagged member port of the default VLAN 1. For other VLANs, you must explicitly configure the channel as a member port, or the channel must be dynamically learned through GVRP. The channel does not inherit the VLAN membership of its member ports. When a port is aggregated into a bundle, that port will not be visible to layer 2 applications like VLAN and STP. Only the port of the port channel is visible to layer 2 applications. When a port gets aggregated into a port channel port, the port is removed from the membership of the specific VLAN. Similarly, when a port is deaggregated from a port channel, the port is added as a member port of the default VLAN.
To demonstrate this behavior, perform these steps.
SEFOS# show vlan Vlan database ------------- Vlan ID : 1 Member Ports : Ex0/1, Ex0/2, Ex0/3, Ex0/4, Ex0/5, Ex0/6 Ex0/7, Ex0/8, Ex0/9, Ex0/10, Ex0/11, Ex0/12 Ex0/13, Ex0/14, Ex0/15, Ex0/16, Ex0/17, Ex0/18 Ex0/19, Ex0/20, Ex0/21, Ex0/22, Ex0/23, Ex0/24 Untagged Ports : Ex0/1, Ex0/2, Ex0/3, Ex0/4, Ex0/5, Ex0/6 Ex0/7, Ex0/8, Ex0/9, Ex0/10, Ex0/11, Ex0/12 Ex0/13, Ex0/14, Ex0/15, Ex0/16, Ex0/17, Ex0/18 Ex0/19, Ex0/20, Ex0/21, Ex0/22, Ex0/23, Ex0/24 Forbidden Ports : None Name : Status : Permanent ---------------------------------------------------- Vlan ID : 2 Member Ports : Ex0/1, Ex0/2, Ex0/3, Ex0/4, Ex0/5 Untagged Ports : Ex0/1, Ex0/2, Ex0/3, Ex0/4, Ex0/5 Forbidden Ports : None Name : Status : Permanent ----------------------------------------------------
SEFOS(config)# set port-channel enable SEFOS(config)# interface port-channel 1 SEFOS(config-if)# no shutdown SEFOS(config-if)# exit SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# channel-group 1 mode active SEFOS(config-if)# exit SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# channel-group 1 mode active SEFOS(config-if)# exit
SEFOS# show vlan Vlan database ------------- Vlan ID : 1 Member Ports : Ex0/3, Ex0/4, Ex0/5, Ex0/6, Ex0/7, Ex0/8 Ex0/9, Ex0/10, Ex0/11, Ex0/12, Ex0/13, Ex0/14 Ex0/15, Ex0/16, Ex0/17, Ex0/18, Ex0/19, Ex0/20 Ex0/21, Ex0/22, Ex0/23, Ex0/24, po1 Untagged Ports : Ex0/3, Ex0/4, Ex0/5, Ex0/6, Ex0/7, Ex0/8 Ex0/9, Ex0/10, Ex0/11, Ex0/12, Ex0/13, Ex0/14 Ex0/15, Ex0/16, Ex0/17, Ex0/18, Ex0/19, Ex0/20 Ex0/21, Ex0/22, Ex0/23, Ex0/24, po1 Forbidden Ports : None Name : Status : Permanent ------------------------------------------ Vlan ID : 2 Member Ports : Ex0/3, Ex0/4, Ex0/5 Untagged Ports : Ex0/3, Ex0/4, Ex0/5 Forbidden Ports : None Name : Status : Permanent
After you create a port channel, the member ports of bundle 1 and bundle 2 are removed from all of the VLANs. The port channel port becomes the member of the default VLAN.
SEFOS(config)# no interface port-channel 1 SEFOS(config)# exit SEFOS# show vlan Vlan database ------------- Vlan ID : 2 Member Ports : Ex0/3, Ex0/4, Ex0/5 Untagged Ports : Ex0/3, Ex0/4, Ex0/5 Forbidden Ports : None Name : Status : Permanent ---------------------------------------------------- Vlan ID : 1 Member Ports : Ex0/1, Ex0/2, Ex0/3, Ex0/4, Ex0/5, Ex0/6 Ex0/7, Ex0/8, Ex0/9, Ex0/10, Ex0/11, Ex0/12 Ex0/13, Ex0/14, Ex0/15, Ex0/16, Ex0/17, Ex0/18 Ex0/19, Ex0/20, Ex0/21, Ex0/22, Ex0/23, Ex0/24 Untagged Ports : Ex0/1, Ex0/2, Ex0/3, Ex0/4, Ex0/5, Ex0/6 Ex0/7, Ex0/8, Ex0/9, Ex0/10, Ex0/11, Ex0/12 Ex0/13, Ex0/14, Ex0/15, Ex0/16, Ex0/17, Ex0/18 Ex0/19, Ex0/20, Ex0/21, Ex0/22, Ex0/23, Ex0/24 Forbidden Ports : None Name : Status : Permanent
After you delete the port channel, note the port channel port is removed from the VLAN. Member ports of bundles 1 and bundle 2 become members of the default VLAN, but not of other VLANs.