[c-nsp] MPLS TE conver from IOS to IOS-XR

[Xu Hu]

Ok, thanks. Got it. I think we need to reconfigure the 7600 routers to support BFD.

Thanks and regards,
Xu Hu

On 27 Feb, 2012, at 12:43, Mark Tinka <mtinka at globaltransit.net> wrote:

> On Monday, February 27, 2012 12:14:15 PM Xu Hu wrote:
> 
>> Yes, i am referring the ospf hello-interval.
>> In the 7609 IOS configuration, under the interface, we
>> had the ospf configuration as bellow:
>> 
>> "ip ospf dead-interval minimal hello-multiplier 3"
>> if we configure this command, the ospf hello interval
>> will be 333 msec.
>> 
>> "Timer intervals configured, Hello 333 msec, Dead 1, Wait
>> 1, Retransmit 5"
> 
> So what you're talking about is the "OSPF Support for Fast 
> Hellos" feature from Cisco:
> 
> http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fasthelo.html
> 
> 
> This feature combines the Hello Interval and Dead Interval, 
> along with some enhancements that make it behave like BFD in 
> a way.
> 
> AFAICT, it's only supported in IOS (and perhaps, IOS XE). 
> You can tweak both the Hello and Dead Interval timers in IOS 
> XR, but they lack of the enhancements to enable fast 
> detection.
> 
> For IOS XR, yes, BFD is your best bet.
> 
> Mark.