Re: RSVP and Multi Area OSPF Problem

Hi,

Loose & Strict next-hop are only the static methods of defining the LSP
path (i.e explicit path).So in brief you are not using CSPF (dynamic
method).
It has nothing to do with inter-area Traffic enfinnering with RSVP.

As of now only intra area TE is supported by RSVP.So, I suppose you can't
set up RSVp LSP from R1 to R5 unless there are in the same area.

Diffrnce b/w Strict & Loose :-

In strict mode explicit path , you mostly define next hop router interface
ip.While In loose mode , we can define next hop of far-end router loopback
ip (or interface ip) , so the intermediate routers can choose any IGP path
to reach that loose next hop.Also you can use combination of Strict & loose
next-hop.

There is no diffrence in the lable allocation . It will remain same in both
dynamic & Static methods.

On Mon, Oct 22, 2012 at 6:09 PM, Routing Freak <routingfreak_at_gmail.com>wrote:

> Hi
>
> I have a large Core network with RSVP running for the LSP setup. But i have
> two different OSPF areas for RSVP. THis is my setup
>
> R1---------R2--------R3-------R4------------R5
>
>
> R1,R2 and R3 are running OSPF area 0 and R3,R4 and R5 are running area 1 .
> So in this case R3 is my ABR and i am running RSVP on all the routers .
>
> I have to form a LSP from R1 to R5 . But CSPF runs only within a area and
> so the CSPF information will not be passed between areas ( Correct me if i
> am wrong )
>
> So how does R1 calculates the path dynamically. Is there any way to do it.
> ?
>
> I have seen some methods such as Loose and Strict Next hops used in certain
> scenarios but i cant really get the point of loose and strict next hops.
>
> What is exactly strict and loose next hops and how many labels it i carries
> and how it works.
>
> Has someone in the group tried this scenario.
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Mon Oct 22 2012 - 18:32:25 ART