From: Cielieska Nathan (ncielieska@gmail.com)
Date: Thu Jan 17 2008 - 00:58:50 ARST
Olugbenga,
Just to confirm.. i labbed this up tonight and the ip summary-address
rip int <interface> does suppress the more specific routes without an
additional modification.
I would encourage you to lab it as well.
Regards,
Nate
On Jan 15, 2008, at 5:19 PM, Olugbenga Adanlawo wrote:
> Dear GS,
>
> Please i need a clarification on the below ASAP.
>
> Does ip summary-address rip interface command suppress the specific
> routes or
> i need to suppress them manually?
>
> Regards
>
> --------------------------------------------------
> From: "Cielieska Nathan" <ncielieska@gmail.com>
> Sent: Monday, January 14, 2008 9:01 PM
> To: "Cisco certification" <ccielab@groupstudy.com>
> Subject: flash-update-threshold??
>
>> All,
>>
>> I have been working through the Command Reference for RIP today and
>> ran into this command. The way i'm reading it (disclaimer) is that
>> when a router running rip v2 unequivocally knows that an advertised
>> route is down... or has been added, it shoots a flash update across
>> to its neighbor notifying them as such thus allowing for faster
>> update time. Thats how i understand it to work.
>>
>> Now the flash-update-threshold has a second value that compares
>> itself with the incoming regular 30 second update. You can suppress
>> an outgoing flash update by configuring this command with a seconds
>> value that will match that 30 second timer.
>>
>> If the timer is greater than the threshold value: flash update is
>> sent. If the update packet is within the timer,flash update is
>> suppressed.
>>
>> For instance:
>>
>> On the receiving end of a route change or event
>>
>> router rip
>> flash-update-threshold 20
>>
>> When a flash-update came into the router on a particular interface,
>> the value in the show ip protocols would be referenced.. if its above
>> 20 the flash update is sent, if its under 20.. its suppressed.
>>
>> Is this correct? Cant find a ton of documentation on the command. I
>> labbed it up and if i remove/add a network command from R1 it shoots
>> the flash update to R2. R2 flash-update-threshold 30 configured which
>> would allow all flash updates to be suppressed. Yet in "debug ip rip"
>> i still see flash updates being sent out my other interfaces on R2.
>>
>> Any help would be great.
>>
>> Regards,
>> Nate
>>
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