From: Colin Barber (Colin.Barber@xxxxxxxxxxxxxx)
Date: Tue Aug 06 2002 - 17:16:16 GMT-3
What is the IOS version? I would look at the latest release notes and
install the current recommended version for your hardware. I have found
Native IOS to give problems on earlier revisions although I haven't come
across that one.
Colin
-----Original Message-----
From: Mike Schlenger [mailto:mschlenger@meridianitsolutions.com]
Sent: 06 August 2002 20:42
To: 'ccielab@groupstudy.com'
Subject: OT:IP CEF experts
Sorry for the OT but I'm enlisting the advice of any ip cef experts out
there.
Problem:
A couple times per week, a "clear arp cache" needs to be issued on our main
6509 MSFC in order to reestablish desktop/IP phone connectivity. It seems as
though devices cannot communicate off of their vlan when this problem
arises. It is strange because sometimes it affects only certain
workstations/IP phones, and other times (like this weekend) I lost
connectivity to an entire vlan.
I'm going to use ping ( using the record route) next time this occurs
because it should be a test to see if the pings work when the cef switching
path is not used to route the packets. Ping -r forces packets to be process
switched. Losing routing to an entire vlan or subnet can still be a cef
problem as that's how the equipment stores routing and re-write information,
(It uses the subnet prefix). Since cef is the switching mechanism on the
sup2/msfc2 and we use the arp table to built the cef adjacency table, that's
the logical place to start?
I am very curious to see if anyone has run into something similar in their
6500 network.
Again.....my apologies for the OT.
Mike
Michael Schlenger
CCIE #7079
N2N Solutions
mschlenger@n2nsolutions.com
847.592.3912
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:48:18 GMT-3