Configuring An Interface As The Source For All Telnet Packets; Cancelling An Outbound Telnet Session; Configuring An Interface As The Source For All Tftp Packets - Foundry Networks FESX Manual

FESX424 Router(config)# end
FESX424 Router# reload
Syntax: [no] logging enable user-login

Configuring an Interface as the Source for All Telnet Packets

You can designate the lowest-numbered IP address configured on an interface as the source IP address for all
Telnet packets from the device. Identifying a single source IP address for Telnet packets provides the following
benefits:
• If your Telnet server is configured to accept packets only from specific links or IP addresses, you can use this
feature to simplify configuration of the Telnet server by configuring the Foundry device to always send the
Telnet packets from the same link or source address.
• If you specify a loopback interface as the single source for Telnet packets, Telnet servers can receive the
packets regardless of the states of individual links. Thus, if a link to the Telnet server becomes unavailable
but the client or server can be reached through another link, the client or server still receives the packets, and
the packets still have the source IP address of the loopback interface.
The software contains separate CLI commands for specifying the source interface for Telnet, TACACS/TACACS+,
and RADIUS packets. You can configure a source interface for one or more of these types of packets.
To specify an interface as the source for all Telnet packets from the device, use the following CLI method. The
software uses the lowest-numbered IP address configured on the interface as the source IP address for Telnet
packets originated by the device.
To specify the lowest-numbered IP address configured on a virtual interface as the device's source for all Telnet
packets, enter commands such as the following:
FESX424 Switch(config)# int loopback 2
FESX424 Switch(config-lbif-2)# ip address 10.0.0.2/24
FESX424 Switch(config-lbif-2)# exit
FESX424 Switch(config)# ip telnet source-interface loopback 2
The commands in this example configure loopback interface 2, assign IP address 10.0.0.2/24 to the interface, then
designate the interface as the source for all Telnet packets from the device.
Syntax: ip telnet source-interface ethernet [<slotnum>/]<portnum> | loopback <num> | ve <num>
The following commands configure an IP interface on an Ethernet port and designate the address port as the
source for all Telnet packets from the device.
FESX424 Switch(config)# interface ethernet 4
FESX424 Switch(config-if-e1000-4)# ip address 209.157.22.110/24
FESX424 Switch(config-if-e1000-4)# exit
FESX424 Switch(config)# ip telnet source-interface ethernet 4

Cancelling an Outbound Telnet Session

If you want to cancel a Telnet session from the console to a remote Telnet server (for example, if the connection is
frozen), you can terminate the Telnet session by doing the following:
1. At the console, press Ctrl-^ (Ctrl-Shift-6).
2. Press the X key to terminate the Telnet session.
Pressing Ctrl-^ twice in a row causes a single Ctrl-^ character to be sent to the Telnet server. After you press
Ctrl-^, pressing any key other than X or Ctrl-^ returns you to the Telnet session.

Configuring an Interface as the Source for All TFTP Packets

You can configure the device to use the lowest-numbered IP address configured on a loopback interface, virtual
interface, or Ethernet port as the source for all TFTP packets from the device. The software uses the lowest-
numbered IP address configured on the interface as the source IP address for the packets.
December 2005 © Foundry Networks, Inc.
Configuring Basic Software Features
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