Date: Thu, 24 Apr 2008 09:57:47 -0400
From: Jim Glassford <[EMAIL PROTECTED]>
Subject: Question on layer 3 size
Greetings,
Cisco 4402 and 4404 Wireless Lan Controllers with a mixer of Cisco light
weight access points. Currently running a 22 bit mask for the 1022 hosts on
one SSID/VLAN. Would welcome any real world experience about increasing to a
21 bit mask for the 2046 hosts or larger on one SSID/VLAN with Cisco WLCs
and lwaps.
We've got two /20 address ranges for client addresses and we've seen no
problems.
Just FYI, we've also got a /16 10.x.y.z address space for the LWAPP
access points and we have seen problems with that. We've got 2200+ APs
on a single vlan that is spanned all over campus. All was fine until
some version of code between 4.1 and 4.2.61.0, I'm not sure of the exact
rev.
The problem was that the WiSMs would sporadically be overwhelmed
by all the broadcast traffic and would fail to answer arp requests in a
timely manner.... sometimes up to 90 seconds. As you can imagine, this
caused all sorts of problems. I've got the Cisco bugid here somewhere
if anyone needs it. This was fixed in rev 4.2.112.0. No problems
since.
--
Earl Barfield -- Academic & Research Tech / Information Technology
Georgia Institute of Technology, Atlanta Georgia, 30332
Internet: [EMAIL PROTECTED] [EMAIL PROTECTED]
**********
Participation and subscription information for this EDUCAUSE Constituent Group
discussion list can be found at http://www.educause.edu/groups/.
