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 -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Brent A O'Keeffe Sent: Monday, February 20, 2006 7:57 AM To: Jon Lewis Cc: Jon R. Kibler; nanog@merit.net Subject: Re: MLPPP over MPLS 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. > ================================================== > Filtered by: TRUSTEM.COM's Email Filtering Service > http://www.trustem.com/ > No Spam. No Viruses. Just Good Clean Email. Virus-free, because I say it is...and I run Pine on Linux :) ---------------------------------------------------------------------- Jon Lewis | I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________