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Chapter 10
SpeedTouch™ Monitoring
10.2.6 How to Force the Source IP Address
About Loopback
How to Assign an IP
Address to the Local
Loop Interface
How to Make the Local
Loop Address the
Primary Address
How the View the
Loopback Configuration
146
The SpeedTouch™ offers the possibility to send SNMP traps to an SNMP manager.
This facilitates the monitoring of the network. It is important that the source IP
address of the SNMP traps remains the same at all times, so the Network Control
Centre knows who is sending the traps.
Making the loopback interface the primary interface of the SpeedTouch™ ensures
that all messages leaving the SpeedTouch™ have the loopback interface's IP
address as source address. This facilitates monitoring of the device by the Control
Centre. This address remains the same even when the SpeedTouch™ has slipped in
ISDN fallback WAN connectivity.
Use the following command to assign an IP address to the local loop interface:
=>:ip ipadd intf=loop addr=50.60.70.80 addroute=enabled
Use the folllowing commands to make this IP address the primary IP address of the
SpeedTouch™:
=>:ip ifconfig intf=loop primary=enabled
=>:ip ipconfig addr=50.60.70.80 primary=enabled
The first command sets the loopback interface as primary interface of the
SpeedTouch™. The second command sets the IP address as primary address of the
loopback interface (instead of the default 127.0.0.0)
Use the following command to view the loopback configuration:
=>:ip iflist expand=enabled
Interface
Group
MTU
0
loop
local
65535 31438
0f
BRHW-address
: ff:ff:ff:ff:ff:ff
RX unicastpkts: 335
TX unicastpkts: 502
Oper state
: UP
Flags
: PRIMARY LOOP INTERNAL
RX
TX
TX-Drop
Status HW-address
33137
0
[UP]
brcastpkts : 0
brcastpkts : 0
Admin State: UP
00:0e:50:5a:dd:
droppkts:0
E-DOC-CTC-20051017-0155 v1.0
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