Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 462)

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USER’S GUIDE

462 CyberSWITCH

e. If syslogd is running but does not receive any log messages, make sure CDR is configured

for the UDP port that syslogd is using. The typical port is 514, but some versions of syslogd

may use a different port.

f. Check that the priority value that you assigned in the CFGEDIT Call Detail Recording

menu (default of 38) matches the priority setting on your syslog server (default of

auth.info).

COMPRESSION

1. To verify compression is operational, make sure compression is enabled on a system-wide

basis.

2. Cause a call to be established with a device for which per-device compression is enabled.

3. To verify that compression is in effect with the device, issue the

cmp stats <devicename>

console command while the connection is in place. If compression is in effect, this command

will display the current compression counters and ratios.

4. If compression is not in effect, the command will return an indication that the device is a non-

compressed connection. If compression is not in effect, try the following:

a. Issue the

cmp stats

console command then issue the

console command to check the

message report log. A message will inform you if the compression failed due to memory

constraints.

b. Verify that the CyberSWITCH has compression enabled. This is done through selecting

“Compression Options” from CFGEDIT’s Systems Options menu.

c. Verify that the device to which the connection is being established has compression

enabled. If the device is another CyberSWITCH, refer to the previous step for instructions.

d. Use the trace console command to examine the CCP frames exchanged with the device.

This is typically accomplished by issuing the

trace ppp on

command, erasing the log

contents, establishing the call, and then examining the log again (by issuing the

console

command) to view the frame trace.

The following traces illustrate some common PPP start-up scenarios when compression is

enabled. Only the CCP frames are excerpted for clarity.

• Successful Negotiation

As a reference, the following trace illustrates a successful negotiation of CCP using the Stac

compression protocol. The key feature of this sequence is that each side receives a

CONFIG-ACK to its respective CONFIG-REQ.

1 2 ... 457 458 459 460 461 462 463 464 465 466 467 ... 728 729

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 462

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