Re: Change administrative distance command

From: William Chen (kwchen@netvigator.com)
Date: Sat Dec 06 2003 - 23:58:20 GMT-3


Hi,

    Thx a lot.

    However, do you have an idea how ISIS router ID is obtained? Moreover,
are there a command to hardcode the router-id such as OSPF does?

- William Chen

    See below:

R1#sh ip int brief | ex unassigned
Interface IP-Address OK? Method Status
Protocol
Loopback0 192.168.1.1 YES NVRAM up
up
Serial0 192.168.123.1 YES NVRAM up
up
Serial1 192.168.14.1 YES NVRAM up
up
Serial2 192.168.41.1 YES NVRAM up
up

R4#sh ip route isis
i L1 192.168.123.0/24 [115/20] via 192.168.41.1, Serial5
                      [115/20] via 192.168.14.1, Serial4
i*L1 0.0.0.0/0 [115/10] via 192.168.41.1, Serial5
               [115/10] via 192.168.14.1, Serial4
R4#sh isis data detail

IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R1.00-00 0x00000006 0xE6AE 611 1/0/0
  Area Address: 49.0014
  NLPID: 0xCC
  Hostname: R1
  IP Address: 192.168.41.1
  Metric: 10 IP 192.168.123.0 255.255.255.0
  Metric: 10 IP 192.168.14.0 255.255.255.0
  Metric: 10 IP 192.168.41.0 255.255.255.0
  Metric: 10 IS R1.01
  Metric: 10 IS R4.00
R1.01-00 0x00000001 0x4597 591 0/0/0
  Metric: 0 IS R1.00
R4.00-00 * 0x00000002 0x4272 499 0/0/0
  Area Address: 49.0014
  NLPID: 0xCC
  Hostname: R4
  IP Address: 192.168.41.4
  Metric: 10 IP 192.168.14.0 255.255.255.0
  Metric: 10 IP 192.168.41.0 255.255.255.0
  Metric: 10 IS R1.00

----- Original Message -----
From: "Bob Sinclair" <bsin@cox.net>
To: "William Chen" <kwchen@netvigator.com>; <ccielab@groupstudy.com>
Sent: Sunday, December 07, 2003 4:15 AM
Subject: Re: Change administrative distance command

> William,
>
> ISIS is like OSPF in the way you handle administrative distance. If you
> issue the command
>
> show isis database detail
>
> you will see that each router is associated with an IP address that is
used
> as a router id. If you reference that ip address in your distance command
> you will be able to change the distance for LSPs from that router.
>
> HTH,
>
> -Bob Sinclair
> CCIE #10427, CISSP, MCSE
> bsinclair@netmasterclass.net
>
> ----- Original Message -----
> From: "William Chen" <kwchen@netvigator.com>
> To: <ccielab@groupstudy.com>
> Sent: Saturday, December 06, 2003 5:01 AM
> Subject: Change administrative distance command
>
>
> > Dear All,
> >
> > The command "distance <distance> <ip_adrr> <wildcard_mask> <acl>",
is
> > used to change the AD of the routes learnt from a particular routing
> source.
> > For distance vector routing protocols, such as RIP/EIGRP/BGP, the
> "<ip_addr>
> > <wildcard_mask>" is configured to match the IP address of the router
who
> > send the routing update.
> >
> > However, for OSPF, the "<ip_addr> <wildcard_mask>" should be
> configured
> > to match the router ID of the router who originated the routes. How
about
> > ISIS? What is it try to match?
> >
> > Best Regards,
> > William Chen
> >
> > _______________________________________________________________________
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