I've
been told by Juniper that the MTU negotiation problem was fixed in the 7.x
versions. We're upgrading soon, so I hope to find out for
myself.
Diane Turley
Sr. Network Engineer
Xspedius Communications Co.
636-625-7178
It may
also be worth noting that if the provider is running Juniper and not Cisco,
there are fragmentation issues with certain versions of Juniper code.
The MLPPP session cannot agree on an MTU and usually stop somewhere
around 100 bytes if they do. The workaround is to implement "ppp
multilink fragment disable" on the Cisco Multilink interface.
Brent
Jon Lewis
<jlewis@lewis.org>
Sent by: owner-nanog@merit.edu
02/17/2006 03:38 PM
|
|
To
| "Jon R. Kibler"
<Jon.Kibler@aset.com>
|
|
cc
| nanog@merit.net
|
|
Subject
| Re: MLPPP over
MPLS |
|
On Fri, 17 Feb 2006, Jon R. Kibler wrote:
> We have a
customer that is implementing an MPLS network that will have 2
> to 6
T1 feeds at some locations that will be using MLPPP for channel
>
bonding. This is a telco provided network that will be customer
managed.
It's not clear from your message, but I'm assuming the MLPPP
will be from
PE to CE and that the MPLS you speak of is MPLS VPN. If
that's the case,
on the customer end, it's just a MLPPP, and on your end,
it's an MLPPP
with an "ip vrf forwarding foo" statement. It's
probably more than the
average CCNA can handle (but so are MLPPP, MPLS,
and most day to day IOS
config work). Anyone who actually uses IOS
on a regular basis (as opposed
to someone who crammed for an exam and
knows squat) should have no trouble
with it.
> The customer is
being told by their router vendor that an MLPPP/MPLS
> network is 'too
complex' to be managed by anyone except for the router
> vendor's VARs
or the telco. They indicated that it would be impossible
> for the
customer's router vendor certified network person to come up to
> speed
on MLPPP/MPLS configurations and manage such a network -- that it
>
takes years to adequately learn how to manage that type of network
>
configuration.
I think someone may be confusing "providing MPLS
service" with "buying
MPLS service". A customer buying MPLS VPN
service never sees any of the
MPLS tags or messes with MPLS/tag-switching
commands. There is no added
complexity...or at least there doesn't
need to be any.
>
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----------------------------------------------------------------------
Jon
Lewis | I
route
Senior Network Engineer | therefore you
are
Atlantic Net
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