PNNI Node Addressing

PNNI Routing

Note If the node does not have a child node, and the node is also at the lowest level, the second byte is assigned the constant value A0 (160 decimal).

For example, for a node at the lowest level (80), the level and address length bytes are 50 (80 in hexadecimal) and a0 (160 in hexadecimal), respectively.

SmartSwitches assign default Node ATM Addresses based on the following format:

SmartSwitch 2500 Family Default Node ATM Address

Default Node ATM Address = 39 + nine zero (00) bytes + last three bytes of CPU MAC address + CPU MAC address with 127 summed with the last byte + byte containing node index starting at zero (0) for the first node

Use the show pnninode command to view SmartSwitch ATM switch PNNI node parameters. For example:

SmartSwitch # show pnninode

NodeIndex(1):

================================================================================

Node Index

:

1

Node Level

:

80

Node Id

:

50:a0:39:00:00:00:00:00:00:00:00:00:14:59:00:00:20:d4:14:59:7f:00

Lowest

:

True

Admin Status

:

Up

Oper Status

:

Up

Node ATM Addr:

39:00:00:00:00:00:00:00:00:00:14:59:00:00:20:d4:14:59:7f:00

Peer Group Id:

50:39:00:00:00:00:00:00:00:00:00:00:00:00

Rst Transit

:

False

Complex Rep

:

False

Rst Branching:

False

DB Overload

:

False

Ptse

:

2

SmartSwitch #

Note Keep in mind that the Node ATM Address is not the same as the ATM address of the switch client (if any). The Node ATM Address is used by PNNI to identify PNNI nodes and does not correspond to LANE entities.

SmartSwitch 6500 Default Node ATM Address

Default Node ATM Address = 39 + nine zero (00) bytes + last three bytes of chassis MAC address + CPU MAC address with 127 summed with the last byte + byte containing node index starting at zero

(0) for the first node

3-2 SmartSwitch ATM User Guide

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Cabletron Systems 04-0053-01 SmartSwitch 2500 Family Default Node ATM Address, SmartSwitch 6500 Default Node ATM Address
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