Chapter 3 Monitoring; Monitoring Communications With The Teldat-3Ge Device - Teldat -3Ge Quick Manual

3 Monitoring

Chapter 3 Monitoring

3.1 Monitoring Communications with the Teldat-3Ge device

The L2TP tunnel monitoring commands can be accessed from the corresponding section in the monitoring process
(process 3), as shown below:
*process 3
+protocol l2tp
L2TP+
As already mentioned in chapter2 "Configuration" section 6) L2TP Tunnel, the tunnel-info all monitoring command
summarizes the L2TP general operations.
L2TP+tunnel-info all
Number of L2TP Tunnels: 1
Number of L2TP Sessions: 2
RemoteIP:172.24.78.28
RemoteName:ramfs-antennaeth
LocalID:52623
group 3
Pseudowire:ETH-ANT-MON
LAC LocalID:20774
LastChange:4m35s
encaps:20
Pseudowire:ETH-ANT-PPP
LAC LocalID:52943
LastChange:4m35s
encaps:1
Pseudowire:ETH-ANT-UPG
LAC LocalID:14495
LastChange:4m35s
encaps:0
L2TP+
In cases where the tunnel is not established (unlike the above capture, where the state is shown as correct according
to the State:established field) the router won't have access to the Teldat-3Ge . The reasons for this abnormal beha-
vior can be one of two things:
• There is an element in the local network blocking the L2TP traffic.
• The DHCP negotiation between both devices has not completed correctly.
More detailed information on the DHCP negotiation can be obtained with the leases command (under the DHCP
server monitoring section):
L2TP+exit
+protocol dhcp
DHCP Protocol monitor
DHCP+server
DHCP-Server+leases
========================================
..:: Currently assigned DHCP Leases ::..
========================================
172.24.78.28
The Teldat-3Ge responds to the ping application. Therefore, you need to be able to obtain the responses to the ping
command by sending this from the router to address 172.24.78.28, as in the example:
+ping 172.24.78.28
PING 172.24.78.28: 56 data bytes
64 bytes from 172.24.78.28: icmp_seq=0. time<1. ms
64 bytes from 172.24.78.28: icmp_seq=1. time<1. ms
20
LocalIP:0.0.0.0 Port:1701
State:established
RemoteID:13425 Sessions:3
Interface:rcellular1
RemoteID:43001 State:established
Events:Show
decaps:32 missed:0
Interface:rcellular2
RemoteID:58150 State:established
Events:Show
decaps:1 missed:0
Interface:rcellular3
RemoteID:49170 State:established
Events:Show
decaps:0 missed:0
hardware ethernet 00:a0:26:fe:98:89
start Thu Sep 06 2007 11:25:55
uid 'teldat'
Sequencing:off
dropped:0
Sequencing:off
dropped:0
Sequencing:off
dropped:0
end Thu Sep 06 2007 23:25:55
Teldat S.A.
Teldat-3Ge Quick Guide