From: Adam Crisp (adam.crisp@totalise.co.uk)
Date: Mon Oct 21 2002 - 08:38:11 GMT-3
ISIS DR does not exist as such...
The ISIS DR, is the router that forms the Pseudo-node for the network -
which produces a LSP for the network segment --- similar to OSPF DR.
Do a show isis database and look for the Router that forms an additional
node on the network,
In the example below, the * means "this router"
the "Router2.01-00" is the Psuedo node.
Router2#show isis d l1
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
Router2.00-00 * 0x00000002 0x74CD 1142 0/0/0
Router2.01-00 * 0x00000001 0x2630 1143 0/0/0
Router6.00-00 0x00000003 0x5649 1140 0/0/0
Router2#
below looki a the individula LSP's
there are 3,
This database describes:
1. the network address, 139.10.103.0 - is attached to the Psuedu node,
Router2.01-00
2. The Psudo node Router2.01-00, is attached to Router2.00.00 and
Router6.00-00
3. the network address 139.10.103.6, is attached to the Psuedo node
Router2.01-00
ATT - attatched bit - desdcribes whether the router has a level-2 database
P - Partitioned bit - OSI Area is partioned - NO VENDOR has implemented - so
always 0
OL - Overload bit - if "1" then dont send any traffic to me
Router2#show isis d l1 de
Router2#show isis d l1 detail
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
Router2.00-00 * 0x00000002 0x74CD 1079 0/0/0
Area Address: 49.0001
NLPID: 0xCC
Hostname: Router2
IP Address: 139.10.103.2
Metric: 10 IP 139.10.103.0 255.255.255.0
Metric: 10 IS Router2.01
Router2.01-00 * 0x00000001 0x2630 1080 0/0/0
Metric: 0 IS Router2.00
Metric: 0 IS Router6.00
Router6.00-00 0x00000003 0x5649 1076 0/0/0
Area Address: 49.0001
NLPID: 0xCC
Hostname: Router6
IP Address: 139.10.103.6
Metric: 10 IP 139.10.103.0 255.255.255.0
Metric: 10 IS Router2.01
Good luck
Adam
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Hung, Sing-Yu
Sent: 21 October 2002 11:55
To: ccielab@groupstudy.com
Subject: ISIS DR
Hi,
What command can show the DR in ISIS?
Bradford Hung
Pacific Century CyberWorks
Tel: 288 33125
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Hung, Sing-Yu
Sent: 21 October 2002 11:55
To: ccielab@groupstudy.com
Subject: ISIS DR
Hi,
What command can show the DR in ISIS?
Bradford Hung
Pacific Century CyberWorks
Tel: 288 33125
This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:52 GMT-3