From: David Luu (wicked01@xxxxxxxxxxxxx)
Date: Thu May 16 2002 - 17:51:50 GMT-3
directly connected networks are not automatically advertised in OSPF, you
will need to use the network statement for that...
and the reason why you see R1's loop1 is because its the Router ID (it has
the highest IP address out of the loopbacks), not the actual route...the
Link ID are the advertised routes, the ADV Router is the Router ID of the
Advertising Router
At 04:12 PM 5/16/2002 -0400, Michael Kilpatrick wrote:
>Can someone please help determine why networks directly connected to R1 are
>not being entered in the OSPF database and therefore not being advertised to
>R2. I thought all directly connected networks (less loopbacks) are
>automatically advertised via the OSPF process running on that router. Also,
>notice that R1 Loop1 and R2 Loop0 are in the ospf database... why isn't R1
>Loop0?
>
>R1_#ping 152.1.1.2
>
>!!!!!
>Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
>
>R1_#sh ip int brie
>Interface IP-Address OK? Method Status
>Protocol
>BRI0 152.1.1.77 YES NVRAM up up
>BRI0:1 unassigned YES unset up up
>BRI0:2 unassigned YES unset down
>down
>Ethernet0 152.1.1.1 YES NVRAM up up
>Loopback0 152.1.1.65 YES NVRAM up up
>Loopback1 152.1.1.97 YES NVRAM up up
>Serial0 152.1.1.81 YES NVRAM up up
>
>R1_#sh run
>router ospf 110
> log-adjacency-changes
> network 152.1.1.1 0.0.0.0 area 0
>
>R1_#sh ip os data
>
> OSPF Router with ID (152.1.1.97) (Process ID 110)
>
>
> Router Link States (Area 0)
>
>Link ID ADV Router Age Seq# Checksum Link count
>152.1.1.72 152.1.1.72 489 0x80000003 0xCD5C 1
>152.1.1.97 152.1.1.97 488 0x80000002 0x30C9 1
>
> Net Link States (Area 0)
>
>Link ID ADV Router Age Seq# Checksum
>152.1.1.1 152.1.1.97 488 0x80000001 0x35CD
>
>R2_#sh ip int brie
>Interface IP-Address OK? Method Status
>Protocol
>Ethernet0 152.1.1.2 YES NVRAM up up
>Loopback0 152.1.1.72 YES NVRAM up up
>
>R2_#sh run
>router ospf 110
> log-adjacency-changes
> network 152.1.1.2 0.0.0.0 area 0
>
>R2_#sh ip o data
>
> OSPF Router with ID (152.1.1.72) (Process ID 110)
>
>
> Router Link States (Area 0)
>
>Link ID ADV Router Age Seq# Checksum Link count
>152.1.1.72 152.1.1.72 849 0x80000003 0xCD5C 1
>152.1.1.97 152.1.1.97 849 0x80000002 0x30C9 1
>
> Net Link States (Area 0)
>
>Link ID ADV Router Age Seq# Checksum
>152.1.1.1 152.1.1.97 850 0x80000001 0x35CD
>
>Thanks, Mike
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