Re: OSPF slow reconvergence

Not ASA. And I don't think it ever will.

On 4/30/2011 12:52 AM, garry baker wrote:
> out of curiosity does the ASA and/or the Nortel support BFD with OSPF?
>
>
> --
> Garry L. Baker
>
> "With sufficient thrust, pigs fly just fine..." - RFC 1925
>
>
>
> On Fri, Apr 29, 2011 at 5:00 PM, Matt Sherman<matt.sherman2_at_gmail.com>wrote:
>
>> Hello,
>>
>> Just curious if anyone can shed some light on this. If you have OSPF hello
>> and dead timers set to 1 and 4 respectively, shouldn't OSPF reconverge
>> within 4 seconds of the loss of a neighbor? When I look at the routing
>> debugs in Dynamips it takes 6 seconds from the notification of OSPF being
>> down until the alternate route is added into the table.
>>
>> I have a real world scenario where we are peering Cisco ASA firewalls with
>> Nortel ERS 8600 switches. The lowest the Nortel / Avaya engineers will
>> allow us to go down to is 1 and 4. The switches do not have millisecond
>> timers anyway so the lowest possible is 1 and 2. It's taking close to 10
>> seconds in that case which is not a good thing for VOIP.
>>
>> Just wondering if this is the expected behavior for OSPF. The Avaya
>> engineers don't think so but testing in Dynamips seems to confirm it is.
>>
>> Thanks,
>> Matt
>>
>>
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Received on Sat Apr 30 2011 - 01:37:17 ART