3Com 4500 PWR 26-Port Configuration Manual page 86

Overview
You can configure the source IP address for Telnet service packets for a Switch 4500 operating as a
Telnet client. The IP address can only be the IP address of a Layer 3 interface on the switch.
Figure 2-24 Specify source IP address for Telnet service packets
As shown in Figure
192.168.1.0/24 are not allowed to telnet to Switch B, you can log in to Switch A (Switch 4500) first,
configure the source IP address of the Telnet service packets on Switch A as 192.168.2.5, and then log
in to Switch B through Switch A.
Configuring Source IP Address for Telnet Service Packets
The feature of configuring source IP address for Telnet service packets can be configured in either user
view or system view.
The configuration performed in user view takes effect for only the current session
The configuration performed in system view takes effect for all the following sessions. That is, when a
switch telnets to a remote device, it automatically uses the configured source IP address or source
interface to encapsulate Telnet service packets.
Use the following commands to configure a source IP address or source interface for Telnet service
packets:
To do...
Specify a source IP
address or source
interface for Telnet
service packets for
the switch serving as
a Telnet client
The IP address specified is that of a Layer 3 interface of the local device. Otherwise, the system
prompts configuration failure.
The source interface specified must exist. Otherwise, the system prompts configuration failure.
Configuring the source interface of Telnet service packets equals configuring the IP address of this
interface as the source IP address of the Telnet service packets.
If a source IP address (or source interface) is specified, you need to make sure that the route
between the IP addresses (or interface) and the Telnet server is reachable.
2-24, suppose you are going to telnet to Switch B from PC. If devices in the segment
Use the command...
telnet { hostname | ip-address } [ service-port ]
{ source-ip ip-address | source-interface
interface-type interface-number }
system-view
telnet { source-ip ip-address | source-interface
interface-type interface-number }
2-36
Remarks
Required
Use either
approach