I understand what split-horizon is and does but it just wont advertise
it "out" if split-horizon is enabled...
"If split horizon is enabled, neither autosummary nor interface
summary addresses (those configured with the ip summary-address rip
command) are advertised."
On Aug 25, 2009, at 10:24 AM, Kim Pedersen wrote:
> Hi,
>
> Its not learning that address from that interface so split horizon
> is not an issue. As you can see it advertises just fine, just the
> wrong thing :)
>
> Sincerely,
> Kim Pedersen
>
> Adrian Brayton wrote:
>> I guess my next question is have you disabled split horizon on that
>> interface?
>>
>> If you don't, it wont advertise the summary address!
>>
>> -Adrian
>>
>>
>> On Aug 25, 2009, at 10:04 AM, Kim Pedersen wrote:
>>
>>> Hi Adrian (and Joe),
>>>
>>> To correct my summary, i actually had (though it wont have any
>>> effect), " ip summary-address rip 192.168.0.0 255.255.255.128"
>>> which is within the scope.
>>>
>>> Yes.. its version 2:
>>> Automatic network summarization is in effect
>>> Mar 1 01:26:40.955: RIP: build update entries
>>> *Mar 1 01:26:40.959: 192.168.0.0/24 via 0.0.0.0, metric 1, tag 0
>>>
>>> As you can see it still sends out with /24
>>>
>>> A bit weird.. also in the documentation i posted, they actually do
>>> run V1 (send version 1 and receive 1 and 2)
>>>
>>> Adrian Brayton wrote:
>>>> Hey Kim,
>>>>
>>>> Have you set RIP to use version 2 and no auto-summary?
>>>>
>>>> If you dont have that set, RIP will never see a subnet other than
>>>> at class full boundaries?
>>>>
>>>> Let us know!
>>>>
>>>> -Adrian
>>>>
>>>>
>>>>
>>>> On Aug 25, 2009, at 9:46 AM, Kim Pedersen wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> So i was playing around with RIP (As i usually do when im
>>>>> bored :) ),
>>>>> and i came across an issue where my results dont agree with the
>>>>> Cisco
>>>>> documentation. What im talking about is the manual summary ("ip
>>>>> summary-address rip <network> <mask>").
>>>>>
>>>>> According to:
>>>>> http://www.cisco.com/en/US/docs/ios/12_1/iproute/command/reference/1rdrip.html#wp1025730
>>>>> The use of a manual summary address, should override the auto-
>>>>> summary
>>>>> functionality. This does not match up to what im able to lab up:
>>>>>
>>>>> R1 <-> R2 <-> R3.
>>>>>
>>>>> On R2, i have the 192.168.0.64/28 configured. between R2 and R3 is
>>>>> 172.16.0.0, so its a different major net. Rip should with
>>>>> autosummary
>>>>> summarize the 192.168.0.64 subnet to 255.255.255.0... This works
>>>>> perfectly.
>>>>>
>>>>> When i then try on the interface between R2 and R3, and do a "ip
>>>>> summary-address rip 192.168.0.64 255.255.255.128" it should
>>>>> override the
>>>>> autosummary, and send this network as a /25 instead of a /24.
>>>>>
>>>>> Anyone able to elaborate on this?
>>>>>
>>>>> Thanks!
>>>>>
>>>>> Sincerely,
>>>>> Kim Pedersen
>>>>>
>>>>> --
>>>>>
>>>>> // Freedom Matters
>>>>> // Follow my progress on: http://kpjungle.wordpress.com
>>>>>
>>>>> _______________________________________________
>>>>> For more information regarding industry leading CCIE Lab
>>>>> training, please visit www.ipexpert.com
>>>>
>>>
>>> --
>>>
>>> // Freedom Matters
>>> // Follow my progress on: http://kpjungle.wordpress.com
>>>
>>
>
> --
>
> // Freedom Matters
> // Follow my progress on: http://kpjungle.wordpress.com
>
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