Specifications

8-3
Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 8 Managing PNNI Nodes and PNNI Routing
Managing PNNI Nodes
Add the upper level PNNI logical node that will participate in the higher level PNNI group using the
addpnni-node <level> command.
Replace level with the PNNI level for the higher level peer group. The PNNI level value must be smaller
than the level value for the lower level peer groups. The following example creates a logical PNNI node
at PNNI level 40.
PXM1E_SJ.7.PXM.a > addpnni-node 40
Note You need to complete this step for all nodes that will serve as PGLs or backup PGLs.
Step 2 Display the current PGL priority of the node that will become PGL or a back up PGL by entering the
dsppnni-election command as shown in the following example:
PXM1E_SJ.7.PXM.a > dsppnni-election
node index: 1
PGL state...... OperNotPgl Init time(sec)....... 15
Priority....... 0 Override delay(sec).. 30
Re-election time(sec) 15
Pref PGL................56:160:47.00918100000000036b5e31b3.00036b5e31b3.01
Pref PGL node name .....M8850_NY
PGL.....................56:160:47.00918100000000036b5e31b3.00036b5e31b3.01
PGL node name ..........M8850_NY
Active parent node id...0:0:00.000000000000000000000000.000000000000.00
Active parent node name
node index: 2
PGL state...... Starting Init time(sec)....... 15
Priority....... 0 Override delay(sec).. 30
Re-election time(sec) 15
Pref PGL................0:0:00.000000000000000000000000.000000000000.00
Pref PGL node name .....
PGL.....................0:0:00.000000000000000000000000.000000000000.00
PGL node name ..........
Active parent node id...0:0:00.000000000000000000000000.000000000000.00
Active parent node name
In the example above, the PGL state indicates the PGL status of each of two logical nodes, and the
priority value is what is used to determine if the node will become PGL. In this example, both logical
nodes are set to the default value 0, and this value prevents a node from becoming a peer group leader.
Step 3 Set the PNNI priority for the node with the cnfpnni-election command as follows:
mgx8830a.1.PXM.a > cnfpnni-election node-index -priority value
Replace node-index with the index that identifies the logical node you are modifying, and replace value
with the new priority value. A zero value prevents the node from becoming a PGL. If only one node in
a peer group has a non-zero priority, that node will become PGL. If multiple nodes have non-zero priority
values, the node with the highest priority value becomes PGL. The following example shows what
happens after you set the priority level and view the PGL status.
PXM1E_SJ.7.PXM.a > cnfpnni-election 1 -priority 200
PXM1E_SJ.7.PXM.a > dsppnni-election
node index: 1
PGL state...... AwaitUnanimity Init time(sec)....... 15
Priority....... 200 Override delay(sec).. 30
Re-election time(sec) 15
Pref PGL................56:160:47.00918100000000001a533377.00001a533377.01