System information

Troubleshooting AppleTalk
Book Title
9-210
ARA: Slow Performance from Dialin Connection
Symptom: Performance on remote dialin ARA sessions is slow.
Table 9-21 outlines the problem that might cause this symptom and describes solutions to that
problem.
Table 9-21 ARA: Slow Performance from Dialin Connection
MNP5 enabled on answering
modem
Step 1 Check to see whether the answering modem has MNP5 error
correction enabled.
Step 2 If MNP5 is enabled on the answering modem, disable it. For
information on checking or changing the modem configuration, refer
to the modem documentation.
Zone list is empty
Step 1 Use the show appletalk route and show appletalk zones privileged
exec commands to determine whether the router can see its ARA
routes and zones.
Step 2 Use the show appletalk interface ethernet exec command and make
sure that the output matches your Apple network parameters.
Step 3 Change the interface configuration as required.
TACACS
1
problem For information on troubleshooting TACACS problems, refer to Chapter 24,
“Troubleshooting Security Implementations.”
1 TACACS = Terminal Access Controller Access Control System
Possible Problems Solution
Flow control is not enabled, is
enabled only on one device (either
DTE or DCE), or is misconfigured
Step 1 Configure hardware flow control on the line using the flowcontrol
hardware line configuration command. Hardware flow control is
recommended for access server-to-modem connections.
For example, to configure hardware flow control on line 2 of an access
server, enter the following commands:
C2500(config)#line 2
C2500(config-line)#flowcontrol hardware
Note: If you cannot use flow control, limit the line speed to 9600 bps.
Faster speeds can result in lost data.
Step 2 After enabling hardware flow control on the access server or router
line, initiate a reverse Telnet session to the modem via that line.
For instructions on initiating a reverse Telnet session, see the section
“Establishing a Reverse Telnet Session to a Modem” in Chapter 16,
“Troubleshooting Dialin Connections.”
Step 3 Use a modem command string that includes the RTS/CTS flow
command for your modem. This command ensures that the modem is
using the same method of flow control (that is, hardware flow control)
as the Cisco access server or router. See your modem documentation
for exact configuration command syntax.
For more information about troubleshooting access server- to-modem
connections, see Chapter 16, “Troubleshooting Dialin Connections.” For
information on troubleshooting hardware problems, see Chapter 3,
“Troubleshooting Hardware and Booting Problems.”
Possible Causes Suggested Actions