[c-nsp] MTU Issue on QinQ Eth link with MPLS

[Raman Sud]

I am experiencing the same issue... the MTU on my MPLS link is set to 9216 all the way and I can't access www.cnet.com

Any ideas will be awesome

Raman Sud
Director,
Network Engineering and Operations


CWIE Holding Company
2353 West University Drive
Tempe AZ 85281
Cell: 602.821.0088
Office: 480.449.7750 Ext 157
Toll Free: 1.888.906.0666
Fax: 480.682.3236
http://www.cavecreek.net/

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-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of mb2 at os.datafx.com.au
Sent: Wednesday, January 02, 2008 4:02 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] MTU Issue on QinQ Eth link with MPLS

Hi,

We have recently had a QinQ link provisioned, but have noticed mtu
issues when testing.

The link is terminated on 2950's(Trunk Ports) at each end, with the
2950's then connected(Also trunk ports) to 7204VXRs, and the various
vlans broken out into dot1q Ints.

Without MPLS(Including MPLS L3 VPNs) running on the link, we can access
all WebSites without issue - As soon as MPLS is enabled, some sites are
not accessible(https sites, www.smh.com.au...)

If we switch back to our primary link(ATM), we also do not experience
any mtu issues.

Should we be decreasing the size of mpls mtu on the 7200's?

Thanks in advance for all suggestions.

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