Cabletron Systems CSX1000 - Manual (Page 377)

Workgroup Remote Access Switch 377
S YSTEM V ERIFICATION
Verifying Compression is Operational
V ERIFYING C OMPRESSION IS O PERATIONAL
1. 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. 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, refer to
Compression in the Problem Diagnosis chapter.
V ERIFYING R ESERVED B ANDWIDTH IS O PERATIONAL
1. Configure several different combinations of lines and devices.
2. Attempt outbound and inbound calls.
3. Verify the proper success and reject of each.
If there is a problem, check the configuration of the profiles and how they are assigned to each
device (refer to the
Bandwidth Reservation in the Configuring Call Control chapter).
V ERIFYING PPP L INK F AILURE D ETECTION IS O PERATIONAL
To verify that Frame Relay’s Link Failure Detection is enabled, a trace can be performed to view the
Echo-Request and Reply packets:
1. With the feature enabled, cause a connection to be established.
2. Erase the system log (issue the er command).
3. Issue the trace ppp on console command.
4. Wait for at least the configured Echo Frequency.
5. Display the system log (issue the dr command). If the feature is operational, some frames like
those of the following example will be seen:
(I) 16:28:49.71 #C021: Conn=001 OUT-PPP:LCP ECHO REQ Id=0x50 Len=10
(I) 16:28:49.71 #0000: 3E 03 78 AC
(I) 16:28:49.76 #C021: Conn=001 IN -PPP:LCP ECHO RPLY Id=0x50 Len=10
(I) 16:28:49.76 #0000: 70 18 D0 87
(I) 16:28:59.82 #C021: Conn=001 OUT-PPP:LCP ECHO REQ Id=0x51 Len=10
(I) 16:28:59.82 #0000: 3E 03 78 AC
(I) 16:28:59.82 #C021: Conn=001 IN -PPP:LCP ECHO RPLY Id=0x51 Len=10
(I) 16:28:59.82 #0000: 70 18 D0 87
Short of having a faulty PPP link, verifying that the feature detects a failure can be accomplished
as follows: