Re: MPLS TE issue

Hmm this seems a tricky situation. I still feel that it is being more on
the vendor implementation as i dont see this is a default behaviour of OSPF
or ISIS TED information to be fed into the Line cards

basically its about the TED database about the particular Router ID of the
tail end. Router ID is fetched from the Database.

If the TailEnd is in another area, i feel it is going to be RIB which is
going to tell u or u should have loose or strict explict path to tackle
this scenario.

Its all about ur ISIS or OSPF TED info to be passed to FIB and it is
nothing to do with RSVP Flow Spec info ie the QOS info is attached to the
ingress or egress ports of that Line card

If the Flow Spec is applied on the paths that the TED is using , so all the
routers should install the FlowSpec path for this particular LSP . And so u
see this behaviour

This is my few cents to ur question

There may be difference, but this is my thought on this.

hope pundits throw some light on this.

On Fri, Nov 8, 2013 at 6:28 PM, HEMANTH RAJ <hemanthrj_at_gmail.com> wrote:

> HI
>
> I have set up two TE Tunnels in my network with B.W for one tunnel is 110
> Mbps and B.W for second tunnel is 10 mbps
>
> R1----- R2------R3-------R4
>
> I am forming two TE tunnels from R1 to R4.
>
> The max B.W available between routers R1 and R4 is 120 Mbps . Control Plane
> reservation of two TE tunnels is TE1 110 Mbps and TE2 10 Mbps respectively
>
> If i am sending 80 MBps of traffic in TE1 tunnel at x amount of time ,
> During that time, i can utilize the remaining 40 Mbps in TE2 tunnel ( even
> though i reserved only 10 Mbps in Control Plane , i can send 40 Mbps of
> traffic in Data plane )
>
> Now if i increase the rate of traffic in TE1 tunnel from 80 Mbps to 110
> Mbps , automatically my TE2 tunnel traffic gets affected from 40 Mbps to 10
> Mbps
>
> My question here is how does the routers R2 and R3 know in Forwarding Plane
> that Tunnel TE2 packtes should be dropped.
>
> Forwarding Plane ( FIB ) doesnt hold the TE2 or TE1 B.W. allocation
> information at all.
> I have verified on the Forwarding Plane on the Line cards, i dont see any
> Forwarding information of TE tunnel B.W. is programmed. How does the
> Routers correctly drop the TE2 tunnels packet and not TE1.
>
> BTW, i am using ASR9k as my R2 and R3 ,..
>
> One more, if i explicitly configure QOS policies, all the Rate limiting,
> Queuing policies will get automatically downloaded to Line Cards, I am
> wondering whether MPLS TE TED information will be passed on to the Line
> Cards but will not be able to see .
>
>
>
>
>
>
>
> --
>
> Regards
> Hemanth Raj
> CCIE#28593 (R&S)
>
>
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-- 
Regards
Routing Freak CCIE#35889 (SPv3)
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