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We only encountered this problem when trying to use MPLS (RFC2547)
VPN's. Basically, because you are stacking 2 labels, you have to
allow for a greater MTU on the switch and Ethernet ports.
- --
William R. Charnock
Director Core Technology
Allegiance Telecom, Inc.
469.259.2260 (V)
469.259.9079 (F)
- ---- Original Message -----
From: Duane de Witt
To: 'cisco-nsp@puck.nether.net'
Sent: Tuesday, May 07, 2002 12:54 AM
Subject: [nsp] MPLS
Hi everyone
I have been dabbling with MPLS on 3660 and 7200 platforms. Seems that
every time I enable tag-switching everything slows down to a virtual
halt. Contacted Cisco and they gave me "mpls mtu 1508" for all my
interfaces and "mtu 1530" for my switches to allow jumbo frames over
Ethernet. Has anyone else come across this problem and how was it
resolved? I find it strange that none of this is mentioned on the
CCO.
Regards
Duane de Witt
Siemens Business Services
Tel. +27 11 652 7613
Fax. +27 11 652 2018
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