[c-nsp] Faster BGP Failover

[Phil Mayers]

On 11/10/11 16:54, Seth Mattinen wrote:
> On 10/11/11 8:50 AM, Phil Mayers wrote:
>> On 11/10/11 16:25, Vincent Aniello wrote:
>>> What can be done to reduce the amount of time it takes BGP to detect
>>> the failure of an Internet connection and start routing traffic
>>> through another Internet connection?
>>
>> Can you be a bit more specific about the config?
>>
>> This is presumably an eBGP session across a local interface?
>>
>> What platform&  IOS version?
>>
>> eBGP sessions should, IIRC, be immediately torn down by the fast
>> external fallover feature.
>>
>
> If it's an Ethernet though that won't do much since the link is likely
> always staying up/up.

That depends entirely on the topology. If there's an intermediate 
network device, then yes. But that's a bad configuration, and should be 
avoided if at all possible, for exactly that reason.

Obviously point-to-point ethernet will fail the link almost immediately 
if either end goes down.