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Configuring PNNI Routing
Configuring PNNI Routing
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0521-45
Leadership Priority
(0-205)
Indicates this node’s priority status for becoming the PGL of
its peer group. The node with the highest leadership priority
within its peer group becomes the PGL and participates at the
next level of the hierarchy.
Enter a number from zero (default) to 205. You must configure
the value zero (0) if this node is not PGL/LGN-capable.
Values greater than 205 are invalid.
Notes: When the PNNI hierarchical topology is rebuilt (for
example, during a switch software upgrade) redundancy can
be provided by configuring at least two PGL-capable nodes
for each peer group.
If this node becomes the PGL of its peer group, it
automatically increases its leadership priority by 50 to reduce
the number of PGLs taking over in the hierarchy.
Parent Node Index
(0-8)
Enter a value from zero (default) to eight that identifies the
node that will represent this peer group at the next higher level
of the PNNI hierarchy (if the node becomes peer group
leader). A value greater than zero (0) indicates this entry has a
parent node. Values greater than eight are invalid.
Note: When you configure the LGN, the parent node index of
the child entry must be set to the index of the LGN entry, and
the leadership priority value of the child must be higher than
zero, which allows the LGN node to become active.
ATM Address Enter a value up to 20 bytes long that represents this node’s
private ATM address. If it is an LGN, remote LGNs exchange
PNNI protocol packets with this node by directing packets or
calls to this address.
If you enter fewer than 20 bytes, this field is right-padded with
zeros (0s).
If you do not configure a value for the ATM address,
Navis EMS-CBGX fills the field with all zeros (0s), and
passes this value to the switch. The switch then derives the
node’s private ATM address using the peer group ID and the
MAC address.
Table 21-4. Add PNNI Node Dialog Box Fields (Continued)
Field Action/Description
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