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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 11 Configuring ATM Routing and PNNI
Basic PNNI Configuration
lowest level, switches T4 and T3 become leaders of their peer groups. Therefore, each switch creates an
LGN at the second level (level 64) of the hierarchy. As a result of the election at the second level of the
hierarchy, logical group nodes (LGNs) SanFran.BldA and NewYork.BldB are elected as PGLs, creating
LGNs at the highest level of the hierarchy (level 56). At that level, the uplinks that have been induced
through level 64 form an aggregated horizontal link within the common peer group at level 56.
Examples
The sections that follow show the configurations for each switch and the outputs of the show atm pnni
local-node command. Some of the output text has been suppressed because it is not relevant to the
example.
Switch NewYork.BldB.T1 Configuration
hostname NewYork.BldB.T1
atm address 47.0091.4455.6677.1144.1011.1233.0060.3e7b.3a01.00
atm router pnni
node 1 level 72 lowest
redistribute atm-static
NewYork.BldB.T1# show atm pnni local-node
PNNI node 1 is enabled and running
Node name: NewYork.BldB.T1
System address 47.009144556677114410111233.00603E7B3A01.01
Node ID 72:160:47.009144556677114410111233.00603E7B3A01.00
Peer group ID 72:47.0091.4455.6677.1144.0000.0000
Level 72, Priority 0 0, No. of interfaces 3, No. of neighbors 2
Parent Node Index: NONE
<information deleted>
Switch NewYork.BldB.T2 Configuration
hostname NewYork.BldB.T2
atm address 47.0091.4455.6677.1144.1011.1244.0060.3e5b.bc01.00
atm router pnni
node 1 level 72 lowest
parent 2
redistribute atm-static
election leadership-priority 40
node 2 level 64
parent 3
election leadership-priority 40
name NewYork.BldB
node 3 level 56
name NewYork
NewYork.BldB.T2# show atm pnni local-node
PNNI node 1 is enabled and running
Node name: NewYork.BldB.T2
System address 47.009144556677114410111244.00603E5BBC01.01
Node ID 72:160:47.009144556677114410111244.00603E5BBC01.00
Peer group ID 72:47.0091.4455.6677.1144.0000.0000
Level 72, Priority 40 40, No. of interfaces 3, No. of neighbors 1
Parent Node Index: 2
<information deleted>
PNNI node 2 is enabled and not running