Cisco Systems OL-7396-01 Manual De Usuario
11-22
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 11
Configuring ATM Routing and PNNI
Basic PNNI Configuration
Displaying Node Election Leadership Priority
To display the node election leadership priority, use one of the following privileged EXEC commands:
Examples
The following example shows the election leadership priority using the show atm pnni election
privileged EXEC command:
privileged EXEC command:
Switch# show atm pnni election
PGL Status.............: PGL
Preferred PGL..........: (1) Switch
Preferred PGL Priority.: 255
Active PGL.............: (1) Switch
Active PGL Priority....: 255
Active PGL For.........: 00:01:07
Current FSM State......: PGLE Operating: PGL
Last FSM State.........: PGLE Awaiting Unanimity
Last FSM Event.........: Unanimous Vote
Configured Priority....: 205
Advertised Priority....: 255
Conf. Parent Node Index: 2
PGL Init Interval......: 15 secs
Search Peer Interval...: 75 secs
Re-election Interval...: 15 secs
Override Delay.........: 30 secs
The following example shows all nodes in the peer group using the show atm pnni election peers
command:
command:
Switch# show atm pnni election peers
Node No. Priority Connected Preferred PGL
~~~~~~~~ ~~~~~~~~ ~~~~~~~~~ ~~~~~~~~~~~~~
1 255 Yes Switch
9 0 Yes Switch
10 0 Yes Switch
11 0 Yes Switch
12 0 Yes Switch
Configuring a Summary Address
Summary addresses can be used to decrease the amount of information advertised by a PNNI node.
Summary addresses should only be used when all end system addresses that match the summary address
are directly reachable from this node. However, this is not always required because routes are always
selected to nodes advertising the longest matching prefix to a destination address.
Summary addresses should only be used when all end system addresses that match the summary address
are directly reachable from this node. However, this is not always required because routes are always
selected to nodes advertising the longest matching prefix to a destination address.
A single default summary address is configured for each logical group node (LGN) in the PNNI
hierarchy. The length of that summary for any LGN equals the level of the child peer group, and its value
is equal to the first level bits of the child peer group identifier. This address prefix is advertised into the
LGN’s peer group.
hierarchy. The length of that summary for any LGN equals the level of the child peer group, and its value
is equal to the first level bits of the child peer group identifier. This address prefix is advertised into the
LGN’s peer group.
Command
Purpose
show atm pnni election
Displays the node election leadership priority.
show atm pnni election peers
Displays all nodes in the peer group.