Cisco Systems IGX 8400 Series Adding an IMA Feeder Trunk, Adding Links to an IMA Feeder Group

Setting Up a UXM-E

•The node maintains a set of retained links for the IMA trunk to keep it active. The IMA trunk does not fail unless the number of active trunks is less than the user-specified number of retained links.

•The IMA trunk can provide a clock source or clock path (see cnftrk command). The first (the lowest numbered) available physical line is used. If this line fails, the next available line within the IMA provides the clock source or clock path.

•Full support for individual physical line alarms and statistics.

To specify the range of ports for an IMA trunk, you can use either Cisco WAN Manager or the command-line interface (CLI). To define an IMA trunk on the CLI, use the uptrk command:

uptrk slot.start_port-end_port

For example, you could enter uptrk 8.1–4. Subsequently, you would refer to this logical trunk by using only the slot number and first port number—8.1 in this example—when you use other commands, such as addtrk, deltrk, cnftrk, and so on. Commands for viewing IMA information also include dspportstats, dspphyslns, dsptrkcnf, dspfdr, dspnode, and dspphyslnstathist.

Adding an IMA Feeder Trunk

To add the UXM-E feeder trunk, you can use either Cisco WAN Manager or the CLI. To define an IMA trunk on the CLI:

Step 1 Activate the trunk between the interface shelf and router by specifying the primary link and the IMA group members of a UXM-E feeder trunk on an IGX routing node or an IGX feeder node. Enter:

uptrk slot.group-member(s)

Step 2 Use the cnftrk command to configure the activated UXM-E feeder trunk:

cnftrk slot.primary link

Step 3 Use the addshelf command to add the feeder trunk to an IGX routing node:

addshelf slot.primary link shelf type

Note The routing node can be one of the following: IGX, BPX, or BPX-BXM/IMATM.

Adding Links to an IMA Feeder Group

To add links to an IMA group, you can use either Cisco WAN Manager or the CLI. To add a link to an IMA on the CLI:

Step 1 Find the nodes configured as trunks connected to the IMA feeder. Enter:

dsptrks

Step 2 Increase the IMA group members on both trunk and feeder nodes by manually entering the number of group members. Enter:

cnftrk slot.primary link

Step 3 Increase the receive rate using the DS0 calculation on both trunk and feeder nodes.

Step 4 Increase the number of retained links on both trunk and feeder nodes.

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