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Chapter 6
Troubleshooting
RADIUS Password and Username Lengths
Computers Running Linux Without term/termcap
Clearing PC Cache with ARP
RIP and Idle Timeouts
78-11190-01
The Cisco 600 series CPE supports RADIUS passwords with more than 16
characters, however, RADIUS servers only support 16 characters or less.
RADIUS usernames can be up to 255 characters. Refer to the
section on page
5-20.
Computers running Linux without the term/termcap database installed will have
trouble connecting to Cisco equipment. The message "BAD ADDRESS" is
sometimes displayed as an error message. The term/termcap database can be
installed from the Linux install disks or CD-ROM.
If you update IP addresses on many Cisco 600 series CPEs in rapid succession
using a Windows PC, the ARP cache on the PC might not clear right away. This
causes communications problems with the subsequent CPEs in the line. Use the
arp -a command to obtain the current ARP list, then update the entries. For
example, to clear the PC cache, use the following command at the MS-DOS
prompt on your PC:
c:\> arp -d 192.168.0.100
This deletes the MAC address and causes IP to send an ARP request (or packet)
to the IP address 192.168.0.100. The ARP utility comes with Windows 95,
Windows 98, and Windows NT, so if you don't have it in your current installation,
you can install it from your original Windows install media.
On a busy network with many RIP broadcasts and requests, RIP traffic alone can
cause the Cisco 600 series CPE to remain sufficiently active to not trigger the idle
timeout. Cisco recommends that RIP be disabled if Cisco 600 series CPE idle
timeouts are used.
RADIUS Password and Username Lengths
Cisco 600 Series Installation and Operation Guide
"RADIUS Client"
6-3
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Table of Contents
Troubleshooting
