1. First (recommended)
   
   Create a static EtherChannel (Port-Channel mode ON) on a Cisco switch and assign the desired interfaces to the Port-Channel. 
   Create a static Trunk on the Nortel switch and assign the desired interfaces.
   
   Cisco: router (config) interface Port-Channel 1
             router (config-if) exit
             router (config) interface fastethernet 0/1
             router (config-if) channel-group 1 mode ON
             router (config) interface fastethernet 0/2
             router (config-if) channel-group 1 mode ON
   
   Nortel:    /cfg/l2/trunk 1
                 ena
                 add Ext1
                 add Ext2
   
   This simple configuration will create a static link aggregation between most on Cisco and Nortel equipment.
   To verity the Trunk Status:
         Cisco:      show int port-channel 1
         Nortel:      /info/l2/trunk
   
2. Second
   
   Both Cisco and Nortel support the industry standard IEEE 802.3ad (LACP). 
   You can create an LACP aggregation on both sides.  Refer to Nortel’s “Applications Guide” and Cisco’s documentation for configuration details.
   
3. Third
   
   Nortel also allows a manual configuration of all possible parameters creating a link aggregation. 
   This configuration possibility can be useful if supporting older proprietary equipment or simply for optimizing traffic distribution over multiple links.
   When enable, several L2 and L3 values, are taking into account for the hashing algorithm use by the link distribution.
   
   Nortel:         /cfg/l2/thash

N/A