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Chapter 7. Nortel Networks L2/3 GbESM configuration and network integration 83
Configure the Nortel GbESMs for IEEE 802.1Q tagged LACP trunk
Enable IEEE 802.1Q tagging on ports EXT5-6 and set the PVID to the VLAN which should
not be tagged (must be equal to the native VLAN on the Cisco switches):
/c/port EXT5
tag ena
pvid 5
/c/port EXT6
tag ena
pvid 5
Add ports EXT5-6 to the VLANs that should be carried through the LACP trunks:
/c/l2/vlan 5
add EXT5
add EXT6
/c/l2/vlan 10
add EXT5
add EXT6
/c/l2/vlan 20
add EXT5
add EXT6
/c/l2/vlan 99
add EXT5
add EXT6
Remove EXT5-6 from the default VLAN 1 (as a security precaution):
/c/l2/vlan 1
rem EXT5
rem EXT6
Configure LACP to aggregate ports EXT1, EXT2 and EXT5, EXT6 each by choosing the
mode active (if desired standby would be another option) for the lower port of the pair:
/c/l2/lacp/port EXT1
mode active
/c/l2/lacp/port EXT5
mode active
Look for the admin key used on the lower ports (EXT1 and EXT5) with /i/l2/lacp/dump and
set it accordingly on the higher ports EXT2 and EXT6:
/c/l2/lacp/port EXT2
mode active
adminkey 17
/c/l2/lacp/port EXT6
mode active
adminkey 21
Because this configuration is based on the one in 7.6, “Basic Layer 2 entry topology” on
page 69, the static port aggregation for ports EXT1 and EXT2 must be disabled with the
/c/trunk 1/dis command. Finally apply must be entered to execute the configuration
changes. Remember that the ports EXT1, EXT2, EXT5, and EXT6 are still disabled.
Note: The same should have been done already for ports EXT1 and EXT2 (see 7.6.1,
“Layer 2 configuration with 802.1Q tagging and trunk failover” on page 70). If not, the
above steps must be repeated with EXT5, EXT6 replaced by EXT1, EXT2.