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[mpls] Regarding mplsTunnelTable

  • From: "Thomas D. Nadeau" <tnadeau@cisco.com>
  • Date: Tue, 17 Jan 2006 09:56:20 -0500
  • Cc: mpls@ietf.org
  • X-IronPort-AV: i="3.99,376,1131350400"; d="scan'208"; a="392618209:sNHT31380562"


On Jan 16, 2006, at 3:35 AM, Aryan Thakkar wrote:

>
>  Hi,
>
>  I am new to SNMP/MPLS Tech. I want to know answers
>  to
>  certain questions:
>
>  1)I have gone through RFC 3812/3813 MIB, with
>  respect
>  to that I want to know that when we create an LSP,
>  how can the hops of the LSPs be defined? That means
>  could we define the hops of the LSP as per our wish or is
>  it going to be decided by any default mechanism?

	The hops for a TE LSP, reflect the different RRO/ERO
objects from RSVP-TE. There are also provisions to show
computed hops.  Thus there are 3 hop tables defined
it he MIB.  There is no such concept for LDP-signaled
LSPs, so you need to go hop-by-hop and examine the
LFIB at each LSR.

> 2)Also does a mplsXCTable support multiple push and
>  pop operations or does it support only swapping?

	The XCTable supports all operations
that you would use in an LFIB.

> 3)Does a core router contain any info regarding LSP
>  ID of any Tunnel?

	Please re-read the section in RFC3811 about
the LSP ID TC, as it goes through and explains each
option, and provides references.  You might also want
to give the MPLS Mgmt Overview (RFC4221) a read.

	--Tom



>  Please do reply soon.
>
>  Regards,
> Aryan T.
>
>>
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