Re: Traffic Engineering Database and OSPF Database

Ok So now how does Traffic Engineering Database creates the CSPF Topology
and how does it be different from OSPF SPF topology
for a particular route which is goin thru the tunnel

How does CSPF Topology is built from SPF Topology ? This is my question

On Sun, Jan 22, 2012 at 3:34 PM, sundeep sadhwani <
sundeep.sadhwani_at_gmail.com> wrote:

> Hey Buddy
>
> Ok, I think i got your question. There are several options to forward the
> traffic down the TE tunnels.
>
> 1) Static Routes : pretty simple to point the routes to the tunnels.
>
> 2) Policy Based routing : Same that we use in normal PBR. The next hop in
> this case will be tunnels.
>
> 3) autoroute announce : What this does is any route behind the TE tunnel
> Tailend will be reachable through the tunnel. The IGP will run its normal
> SPF until it finds a node that is either TE tunnel tailend or located
> behind TE Tunnel. In that case it will install the route in the routing
> table with the next hop as TE tunnel.
>
> The details of how SPF does this is provided in the book written by Ajay
> Simha chapter " Forwarding traffic down tunnels."
>
> Regards
> Sundeep
>
>
> On Sun, Jan 22, 2012 at 2:47 PM, CCIE KID <eliteccie_at_gmail.com> wrote:
>
>> Hi Sundeep,
>>
>>
>> No buddy, My question is all the routes learnt from OSPF Database should
>> follow the TE Tunnels, How will the mapping happens man?
>> Thats all my doubt , How does OSPF separately calculates the Path which
>> is goin to choose for WHICH routes?
>>
>>
>>
>> On Sun, Jan 22, 2012 at 2:43 PM, sundeep sadhwani <
>> sundeep.sadhwani_at_gmail.com> wrote:
>>
>>
>>
>>
>> --
>> With Warmest Regards,
>>
>> CCIE KID
>> CCIE#29992 (Security)
>>
>>
>>
>

-- 
With Warmest Regards,
CCIE KID
CCIE#29992 (Security)
Blogs and organic groups at http://www.ccie.net