From: Leigh Harrison (ccileigh@gmail.com)
Date: Wed Oct 26 2005 - 10:10:03 GMT-3
All fixed,
As the router with the virtual link is an ABR, I used the, erm, area
range command....
Thanks for the quick responses,
LH
Leigh Harrison wrote:
> Chaps,
>
> I've figured out why it's doing it:-
>
> I've got a virtual link in there to a router behind R1, i.e:-
>
> R4 -- area 2 -- R1 -- area 1 -- R2 -- area 0 -- R3
> ------virt------
>
> in the ospf database - R3 is seeing the routes advertised via R1 from
> Area 0.
>
> Any thoughts on how to stop it sending them in to area 0 ?
>
> LH
>
>
> kevin gannon wrote:
>
>> I tested what I think your topology is and I only get the summary
>> on R3.
>>
>> R5#sh ip os int | i Are|is up
>> Serial0/1 is up, line protocol is up
>> Internet Address 35.35.35.5/24, Area 0
>> Serial0/0 is up, line protocol is up
>> Internet Address 25.25.25.5/24, Area 1
>> R5#
>> R5#sh ip rou osp
>> 2.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
>> O 2.2.2.2/32 [110/65] via 25.25.25.2, 00:03:04, Serial0/0
>> O 2.0.0.0/8 is a summary, 00:03:04, Null0
>> 33.0.0.0/32 is subnetted, 1 subnets
>> O 33.33.33.33 [110/65] via 35.35.35.3, 00:03:04, Serial0/1
>> R5#
>> R5#sh run | i area 1
>> area 1 range 2.0.0.0 255.0.0.0
>> network 25.25.25.0 0.0.0.255 area 1
>> R5#
>>
>> The route in question is 2.2.2.2/32 and is seen from Area 0
>> via Serial 0/0. Then on another router in Area 0 this is what
>> I see:
>>
>> R3#sh ip os int | i Area|is up
>> Loopback33 is up, line protocol is up
>> Internet Address 33.33.33.33/32, Area 0
>> Serial0/1 is up, line protocol is up
>> Internet Address 35.35.35.3/24, Area 0
>> R3#
>> R3#sh ip rou os
>> R3#sh ip rou ospf
>> O IA 2.0.0.0/8 [110/129] via 35.35.35.5, 00:04:58, Serial0/1
>> 25.0.0.0/24 is subnetted, 1 subnets
>> O IA 25.25.25.0 [110/128] via 35.35.35.5, 00:05:53, Serial0/1
>> R3#
>>
>> I only see the summary on other routers in Area 0. Maybe you
>> can post the configs.
>>
>>
>> Regards
>> Kevin
>>
>> On 10/26/05, Lee Donald <Lee.Donald@t-systems.co.uk> wrote:
>>
>>
>>> Hi Leigh,
>>>
>>> R3 would get this summary and the /24 as it is part of area 0. The
>>> injected
>>> network and the summary would go into area 0 as all lsa's do.
>>> Another area
>>> would receive only the summary.
>>> For example your topology
>>>
>>> R1 -- area 1 -- R2 -- area 0 -- R3 -- area 4 -- R4
>>>
>>> Router 3 will see both routes but R4 will only see the summary.
>>>
>>> Regards
>>>
>>> Lee.
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Leigh Harrison [mailto:ccileigh@gmail.com]
>>> Sent: Wednesday, October 26, 2005 1:08 PM
>>> To: FORUM
>>> Subject: OSPF area range
>>>
>>> Anyone,
>>>
>>> I've put in a area range on a router.
>>>
>>> It sends it out to the correct boxes attached to it, BUT!! It also
>>> send
>>> out the routes that I'm trying to summerise !!!
>>>
>>> I can't seem to see why. Any thoughts ?
>>>
>>> R1 -- area 1 -- R2 -- area 0 -- R3
>>>
>>> R1 has the addresses 12.12.8.0 - 9.0 - 10.0 - 11.0
>>> On R2 I put the command:-
>>> area 1 range 12.12.8.0 255.255.252.0
>>>
>>> In the routing table of R3 I get:-
>>>
>>> O IA 12.12.8.0/24 [110/139] via 12.12.23.3, 00:34:18, Serial0
>>> O IA 12.12.8.0/22 [110/65] via 12.12.23.3, 00:34:23, Serial0
>>> O IA 12.12.9.0/24 [110/87] via 12.12.23.3, 00:34:23, Serial0
>>> O IA 12.12.10.0/24 [110/85] via 12.12.23.3, 00:34:23, Serial0
>>> O IA 12.12.11.0/24 [110/86] via 12.12.23.3, 00:34:23, Serial0
>>> O IA 12.12.13.0/24 [110/129] via 12.12.23.3, 00:36:30, Serial0
>>>
>>> It sends out the summary, as per, but also sends out the routes too.
>>>
>>> I wanted to cut down the table, not add to it !!!!
>>>
>>> Time for a cup of tea methinks....
>>>
>>> LH
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>> --
>>> This message has been scanned for viruses and
>>> dangerous content by MailScanner, and is
>>> believed to be clean.
This archive was generated by hypermail 2.1.4 : Sun Nov 06 2005 - 22:00:54 GMT-3