Re: HSRP

Ok so my understanding therefore is as per previous post, the ESP is your control plane therefore maps interfaces to where traffic will go..

If there is 1 ESP in this model and with regards to hsrp traffic then just means if the ESP fails it would switch to the other router as the active group.

Would need testing really before putting into production, you would normally set ip sla to track remote gateway address and if this goes down then the track would decrement the priority hence the switchover..

I know the ASR has advanced architecture even backup memory to run IOS in case of failure

--
BR
Sent from my iPhone on 3
On 13 Jul 2012, at 11:27, jack daniels <jckdaniels12_at_gmail.com> wrote:
> Hi ,
> 
> As I mentioned earler , my router is ASR 1004 ( which has only 1 RP
> and 1 ESP , no option of dual ESP in ASR 1004)..
> 
> Regards
> 
> 
> On Wed, Jul 11, 2012 at 6:10 PM, Abraham, Tharak
> <tharakabraham_at_gmail.com> wrote:
>> NSF/SSO allows RPs to fail over without any packet loss, and ESPs can fail
>> over with extremely small packet loss.
>> 
>> If we are talking redundant RPs/ESPs here and SSO NSF aware, then the
>> standby group will not change and the Active router would remain to forward
>> the traffic as usual.
>> 
>> If this is between just two ASRs or between any two routers, the Standby
>> router takes over forwarding if the control frames messages are lost.
>> 
>> Thanks,
>> Tharak Abraham Luke
>> 
>> 
>> On Wed, Jul 11, 2012 at 4:20 PM, Jay McMickle <jay.mcmickle_at_yahoo.com>
>> wrote:
>>> 
>>> I think his question was about how the ASR would detect the failure and
>>> about tracking.
>>> 
>>> I'm not familiar with the ESP card, but from the sounds of it, it will
>>> just know (ESP, haha).
>>> 
>>> What are the effects of the ESP card? If it's like a SUP, the hellos would
>>> e lost and yes, the 2nd would become active if preempt is enabled.
>>> 
>>> I need to look up the ESP card as I installed two ASR1001's yesterday.
>>> 
>>> Regards,
>>> Jay McMickle- CCIE #35355 (R&S)
>>> Sent from iJay
>>> 
>>> On Jul 10, 2012, at 2:00 PM, Tony Singh <mothafungla_at_gmail.com> wrote:
>>> 
>>>> Depends which one is active at the time of failure, my understanding is
>>>> the highest priority hsrp group would remain active, what interfaces have
>>>> you configured the group on
>>>> 
>>>> --
>>>> BR
>>>> 
>>>> Tony
>>>> 
>>>> Sent from my iPhone on 3
>>>> 
>>>> On 6 Jul 2012, at 11:20, jack daniels <jckdaniels12_at_gmail.com> wrote:
>>>> 
>>>>> Hi Experts,
>>>>> 
>>>>> If there is HSRP running between two Cisco ASR Routers 1004 and ESP
>>>>> card FAILS.
>>>>> Then how will it Network Behave-
>>>>> Will there be no HSRP Hellos and both become active ?
>>>>> 
>>>>> Regards
>>>>> 
>>>>> 
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