OSPF distance command affecting all routes ignoring the source

From: ISolveSystems (support@isolvesystems.com)
Date: Thu Aug 23 2007 - 12:10:31 ART


The following are configured on R5 to decrease the distance to
139.1.0.0received from
150.1.2.2
   access-list 1 permit 139.1.0.0
   distance 109 150.1.2.2 0.0.0.0 1

However, R5 would decrease the distance for the route received from
150.1.1.1 also.

See below

Before the distance command
O IA 139.1.0.0/24 [110/129] via 139.1.25.2, 00:00:01, Serial0/0/0.52
                     [110/129] via 139.1.15.1, 00:00:01, Serial0/0/0.51

After the distance command
O IA 139.1.0.0/24 [109/129] via 139.1.25.2, 00:00:02, Serial0/0/0.52
                     [109/129] via 139.1.15.1, 00:00:02, Serial0/0/0.51

The OSPF database below shows that the router ID is correct.

                Summary Net Link States (Area 1)

Link ID ADV Router Age Seq# Checksum
139.1.0.0 150.1.1.1 751 0x80000002 0x009143
139.1.0.0 150.1.2.2 710 0x80000006 0x007C52



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