Re: MPLS TE with EIGRP is now possible

HI imran,

Can u explain me the logic of this TE tunnel flow of traffic .
Because TE works to build the entire database of the topology and then
build the tunnel for it.
But eigrp doesnt give u the entire topological database.

So how can TE tunnel starts to build the tunnel without the database of
link attributes, the bandwidth and also the affinity towards it

Can someone throw some light on it ?

On Mon, Dec 19, 2011 at 2:15 AM, Imran Ali <immrccie_at_gmail.com> wrote:

> i guess then it is not " contrain based " , since next hop's are
> explicitly mentioned .
>
> Regardless of current status of links , TE tunnel always steers the path
> dictated by you, even though there are other paths with sufficient
> bandwidth . those are kept idle .
>
>
> since eigrp is not link state , the choice of TE IGP is ospf/isis.
>
>
> you cant get true TE tunnels contending for resources , based on " current
> " availability of bandwidth ...with eigrp ....
>
>
>
> i would not be surprised if RIP becomes TE IGP , in which TE explicit
> tunnels are like " static GRE " tunnels
>
>
>
> Refer to
> http://blog.ipexpert.com/2010/06/02/old-ccie-myths-mpls-traffic-engineering/
>
>
> On Sun, Dec 18, 2011 at 9:19 PM, Routing Freak <routingfreak_at_gmail.com>wrote:
>
>> Hi Imran,
>>
>> Yes man i did it with explicit route object with a different route when
>> compared to IGP following path.
>>
>>
>> On Sun, Dec 18, 2011 at 11:21 PM, Imran Ali <immrccie_at_gmail.com> wrote:
>>
>>> have you explicitly defined next hops for the tunnel ?
>>>
>>> such as
>>>
>>> ip explicit-path name abc
>>>
>>> On Sun, Dec 18, 2011 at 8:38 PM, Routing Freak <routingfreak_at_gmail.com>wrote:
>>>
>>>> Hi fellas,
>>>>
>>>> I found something with respect to MPLS Traffic Engineering working with
>>>> EIGRP. I just tried out EIGRP as my IGP in the core and formed a tunnel
>>>> between two PE and made changes with respect to IGP flow of traffic. and
>>>> found TE tunnel working like a charm.
>>>> Can someone say how this is posssible.
>>>> I just used a keyword VERBATIM after the path option under the tunnel
>>>> interface.
>>>>
>>>> Can someone tell me the logic of how TE utilize the database of the end
>>>> to
>>>> end tunnel without having the complete view of the topology.
>>>>
>>>> Because EIGRP works with Routing by rumor. So how could this happen with
>>>> Traffic Engineering where OSPF n ISIS provides necessary LSA's and
>>>> extended
>>>> TLV's to convey the bandwidth information.
>>>>
>>>> can anyone explain me the logic of this VERBATIM command in the path
>>>> option?
>>>>
>>>>
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Received on Tue Dec 20 2011 - 15:29:14 ART