North American Network Operators Group
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RE: MLPPP over MPLS
- From: Peering
- Date: Mon Feb 20 13:11:31 2006
Title: Message
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
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
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