RE: tunnel mode mpls traffic-eng

No. A TE tunnel's traffic is classified based on the MPLS Experimental Bits, which are like the IP Precedence/DSCP field, but in the MPLS header instead of the IP header. The reason why is that in the SP core traffic is routed only based on the MPLS header and not based on the IPv4/IPv6 packet that's inside.

Take a look at these docs for more info on this.

Class Based Tunnel Selection
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/gscbts.html

DiffServ Aware Traffic Engineering
http://www.cisco.com/en/US/docs/ios/12_2sr/12_2srb/feature/guide/dsteietf.html

Brian McGahan, 4 x CCIE #8593 (R&S/SP/SC/DC), CCDE #2013::13
bmcgahan_at_INE.com

Internetwork Expert, Inc.
http://www.INE.com

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Eduardo Vazquez
Sent: Tuesday, July 23, 2013 2:16 PM
To: Yuri Bank
Cc: ccielab_at_groupstudy.com
Subject: Re: tunnel mode mpls traffic-eng

Yuri,

Would you use a "qos pre-classify" command on the tunnel like GRE or not?

Thanks,

Ed Vazquez

On Tue, Jul 23, 2013 at 1:29 PM, Yuri Bank <yuribank_at_gmail.com> wrote:

> 1. Not exactly. 'tunnel mode mpls traffic-eng' is for setting up RSVP
> signaled LSPs. It is not a logical interface in the same way a
> GRE/IP-IP tunnel. So you do not configure your routing protocols directly on them.
> Normally you would create static routes, across them, or use autoroute
> announce to make your IGP use the LSP. IPv6 can be forwarded over RSVP
> signaled LSPs the same way as LDP signaled LSPs (using 6PE or 6VPE).
>
>
> 2. You do not apply policy-maps on the tunnel interface itself. You
> would mark your traffic on the CE facing interfaces, for example.
>
> -YuriB
>
>
> On Tue, Jul 23, 2013 at 7:19 AM, Eduardo Vazquez <evazquez_at_gmail.com>wrote:
>
>> Hello everyone,
>>
>> I am very unfamiliar with this tunnel type, so I have 2 probably
>> stupid questions.
>>
>> 1. Can you pass IPv6 over this type of tunnel? Meaning, is there a
>> possibility to form ospf v3 relationships or eigrp from one side to
>> the other?
>>
>> 2. How does one classify (EXP bits) or policy map a tunnel like this?
>>
>> Sorry for the broad questions.
>>
>> Ed Vazquez
>>
>>
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Received on Tue Jul 23 2013 - 15:56:50 ART