From: Aidan Marks (amarks@cisco.com)
Date: Sat Feb 08 2003 - 01:41:50 GMT-3
you need to redistribute connected or make the interface passive (as you
did) for isis to advertise it. This has been discussed several times,
please check the archives for a more detailed explanation.
Aidan
At 02:12 PM 8/02/2003, Tony Kwok wrote:
>Hi,
>
>I have found one very interesting thing on isis. Does
>anyone can explain. The following is my netwrok
>topology. The R1 has two ethernet interface. One is
>connecting to R2.
>
>R1------------R2
>
>R1 configuration.
>================
>
>interface Ethernet1/0
> ip address 150.50.17.1 255.255.255.0
> Description connecting to R2
> ip router isis
>!
>interface Ethernet1/1
> ip address 150.50.200.1 255.255.255.0
> half-duplex
>
>router isis
> passive-interface Ethernet1/1
> net 11.1111.1111.1111.1111.00
> is-type level-1
>
>
>R2 Configuration
>===============
>interface FastEthernet0/0
> ip address 150.50.17.2 255.255.255.0
> ip router isis
> duplex auto
> speed auto
>
>router isis
> net 11.1111.1111.1111.1112.00
> is-type level-1
>
>
>***************************************
> From this configuration, I suppose that I cannot
>receive the route 150.50.200.0/24 on R2 through the
>isis because the interface has not join the isis and
>also it has not redistribute out by the redistribute
>command. However, I found that I am wrong. Does
>someone can explain why? I have tested that the route
>will be disappeared once I delete the passive
>interface command on the router configuration. Thx.
>
>R2#sh ip route isis
>i L1 150.50.200.0/24 [115/10] via 150.50.17.1,
>FastEthernet0/0
>
>Regards,
>Tony
>
>
>
>
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.
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