13-14 Cisco BPX 8600 Series Reference
IGX Routing Hubs in a Tiered Network
• IP Relay
• Robust Object Updates
• Robust Alarm Updates
• Real-time Counters
• Event Logging
• Software/Firmware Downloads
• Configuration Save/Restore
• SNMP
Configuration and Management
The interface shelves attached to each hub must have unique names. Each interface shelf must also
be assigned a unique IP address.
An interface shelf communicates with a routing hub over a new type of NNI. It is similar to the
existing Frame Relay NNI in purpose and function, and is based on the ATM LMI message set
described by Recommendation 2931, Annex G. A routing hub and interface shelf use this NNI to
maintain a control session with each other. Any change to the status of the feeder trunk affects this
control session.
Feeder trunks are the communication path between the routing hub and the Feeder. These feeder
trunks are supported by the BTM trunk card on both the IGX interface shelf and the IGX routing
hub. Feeder trunks are upped using the “uptrk” command. Feeder trunks must be upped on both the
routing hub and the interface shelf before it can be joined to the routing network.
An IGX node must be converted to an interface shelf by entering the appropriate command at the
node. Once an IGX switch has been converted to an interface shelf, it can be joined to the IGX
routing hub, by executing the addshelf command at the IGX routing hub. The addshelf command
has the following syntax:
Shelf Management
addshelf <trunk> <shelf_type>
trunk slot.port
shelf_type I (IGX/AF)
delshelf <trunk> | <shelf_name> deletes interface shelf
dspnode: Displays feeder trunk status. IGX routing hubs display the status of all
attached IGX interface shelves. IGX interface shelves display a single status
item, that of the attached IGX hub node.
