From: Ambern, Jeff (jambern@xxxxxxxxxxxxxxxxx)
Date: Wed Apr 24 2002 - 12:15:15 GMT-3
> Ospf will insert Intra-Area routes into the routing table befor Inter-Area
> routes.
> The order of preference is:
> O
> IA
> E1
> E2
> Jeff
>
>
> --------------------------------------------------------------------------
> Hello all,
>
> Last night I worked in a distribution lab from fatkid.com. In this lab I
> had
> the following problem:
> Area 2 is configured a virtual area between routers R5 and R4. I used area
> 0
> range command to summarize the /28 subnet into area 2. Now the problem is
> R4
> receive both routes the 172.10.7.0/28 as O and 172.10.7.0/24 as O IA and
> strangely choose the first to install in the routing table. The /24 subnet
> gets suppressed and does not make it to the routing table. Shouldn't I see
> both routes in R4 because OSPF supports VLSM? Why OSPF choose the route
> with
> the longer mask and ignored the one with shorter mask? If this the default
> behavior, How can I make the summary address /24 reach R4. Thank you all
> for
> your help.
>
>
>
> 172.10.7.0/28 172.10.128.0/26 LB0:172.10.5.4/24
> R2------------------------------R5------------------------------R4--------
> --
> -------------------
> area 0 area 2 area 3
> Frame Relay Ethernet LB of R4
>
> At R5:
> area 0 range 172.10.7.0 255.255.255.0
>
>
>
>
> Elsayed Mohamed
> Sr. Network Consultant
> Microgateds, Inc.
> 732-936-4413
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:58:18 GMT-3