3Com OfficeConnect 3CP4144, Cli User'S Manual

Page: 43 / 144

IP Routing 6-7
set vc <vc name>
ip [DISABLE | ENABLE]
The remote IP address information consists of the IP address of the router at the
other end of the VC connection. This address can be either specified by you, or (if
you are using PPP as the Network Service for the connection) it can be learned
when the PPP session is established.
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To specify the remote IP address, use the command:
set vc <vc name>
remote_ip_address <ip address/mask>
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To specify that the remote IP address should be learned you can enter
255.255.255.255/H for the <ip address/mask> parameter, or you can use the
command:
set vc <vc name>
address_selection negotiate
The IP address associated with the local side of the WAN connection can be
specified by you, learned from the remote site (if you are using PPP as the Network
Service for the connection), or the interface can be Unnumbered.
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To specify the local IP address use the command:
set vc <vc name>
local_ip_address <ip address>
To specify that the local IP address should be learned you must enter
255.255.255.255 for the <ip address> parameter. To specify that the interface is
Unnumbered you must enter 0.0.0.0 for the <ip address> parameter. (See
Appendix B of the OfficeConnect Remote 812 ADSL Router User’s Guide for a
discussion of Unnumbered interfaces.)
Optionally, you can specify that the remote site should be used as the default
gateway.
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To designate the remote site as the default gateway use the command:
set vc <vc name>
default_route_option [DISABLE | ENABLE]
The default_route_option can only be enabled in one VC profile.
Also, you can configure IP Source Validation for the connection. When IP Source
Validation is enabled, the source address of all IP frames received from the remote
site will be validated. A packet’s source address is valid if the OfficeConnect
Remote 812 will route an IP frame destined to the source address on the same VC
it came in on.
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To enable IP Source Validation in a profile, use the command:
set vc <vc name>
ip_source_validation [DISABLE | ENABLE]