RE: [nsp] Cisco vs. Juniper of LSP setup

From: LU (wenxuecity2001@yahoo.com)
Date: Fri Apr 12 2002 - 14:01:10 EDT


Another question about IOS LSP is that if there is a
way to limit LSP only for BGP?

I know in JUNOS, by the default only BGP uses LSP for
network-hop either with short-cut or not, then you
could advertise LSP into a specific IGP, is this the
same with IOS? I noticed that there is a command to
announce the LSP to IGP, does this mean all the IGPs
will start announcing this LSP?
Apparently I have not done my lab test, but as there
is not too many I could find from CCO, I hope I could
get some input from the list, so that I have an idea
what to expect in our lab test.

Thanks
LU

--- "Martin, Christian" <cmartin@gnilink.net> wrote:
> The verbatim command is not supported on all
> platforms. C10k is one for
> sure!
>
> chris
>
>
> >-----Original Message-----
> >From: Sean Crocker
> [mailto:crockers@mail.trinicom.com]
> >Sent: Friday, April 12, 2002 12:31 PM
> >To: cisco-nsp@puck.nether.net; LU
> >Cc: juniper-nsp@puck.nether.net
> >Subject: Re: [nsp] Cisco vs. Juniper of LSP setup
> >
> >
> >There's nothing like Juniper's no-cspf.
> >
> >There is a way that is
> hidden/undocumented/unsupported. Unless IOS
> >has changed since last I looked, you have to define
> an explicit path,
> >then append "verbatim" to the path-option
> statement...
> >
> >R1(config-if)#tunnel mpls traffic-eng path-option 1
> explicit
> >name foo verbatim
> >
> >The explicit-path can be as short as just one node
> (the directly-
> >connected next-hop). The next node (either cisco
> and juniper)
> >will strip out the PATH's ERO and send it on
> towards egress
> >according to the RIB, so from that point on it's
> like no-cspf.
> >
> >Sean
> >
> >
> >>I just noticed that in cisco you can not establish
> LSP
> >>without enabling OSPF
> >>opaque LSA, this is quite different from Juniper.
> >>JUNOS allows you to set up
> >>LSP just based on normal IGP information. Am I
> missing
> >>some commands in IOS?
> >>Does IOS have a way to enable MPLS-TE without
> having
> >>OSPF opaque LSA?
> >>
> >>Thanks
> >>LU
> >>
> >>__________________________________________________
> >>Do You Yahoo!?
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> >
> >

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