Motorola Netopia-3000 Router Manual PDF (Setup & Configuration Guide)

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251

CONFIG Commands

The broadcast address for most networks is the network number followed by 255. For

example, the broadcast address for the 192.168.1.0 network would be 192.168.1.255.

set ip dsl vccn netmask

netmask

Speciﬁes the subnet mask for the TCP/IP network connected to the virtual circuit. The sub-

net mask speciﬁes which bits of the 32-bit binary IP address represents network informa-

tion. The default subnet mask for most networks is 255.255.255.0 (Class C subnet

mask).

set ip dsl

vccn

restriction { admin-disabled | none }

Speciﬁes restrictions on the types of trafﬁc the Netopia Gateway accepts over the DSL vir-

tual circuit. The

admin-disabled

argument means that access to the device via telnet,

web, and SNMP is disabled. RIP and ICMP trafﬁc is still accepted. The

none

argument

means that all trafﬁc is accepted.

set ip dsl vccn addr-mapping { on | off }

Speciﬁes whether you want the Netopia Gateway to use network address translation (NAT)

when communicating with remote routers. Address mapping lets you conceal details of

your network from remote routers. It also permits all LAN devices to share a single IP

address. By default, address mapping is turned “On”.

set ip dsl vccn rip-send { off | v1 | v2 | v1-compat | v2-MD5 }

Speciﬁes whether the Netopia Gateway should use Routing Information Protocol (RIP)

broadcasts to advertise its routing tables to other routers. RIP Version 2 (RIP-2) is an

extension of the original Routing Information Protocol (RIP-1) that expands the amount of

useful information in the RIP packets. While RIP-1 and RIP-2 share the same basic algo-

rithms, RIP-2 supports several additional features, including inclusion of subnet masks in

RIP packets and implementation of multicasting instead of broadcasting (which reduces

the load on hosts which do not support routing protocols. RIP-2 with MD5 authentication is

an extension of RIP-2 that increases security by requiring an authentication key when

routes are advertised.

Depending on your network needs, you can conﬁgure your Netopia Gateway to support RIP-

1, RIP-2, or RIP-2MD5.

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252

If you specify

v2-MD5

, you must also specify a

rip-send-key

. Keys are ASCII strings with a

maximum of 31 characters, and must match the other router(s) keys for proper operation

of MD5 support.

set ip dsl vccn rip-receive

{ off | v1 | v2 | v1-compat | v2-MD5 }

Speciﬁes whether the Netopia Gateway should use Routing Information Protocol (RIP)

broadcasts to update its routing tables with information received from other routers.

If you specify

v2-MD5

, you must also specify a

rip-receive-key

. Keys are ASCII strings

with a maximum of 31 characters, and must match the other router(s) keys for proper oper-

ation of MD5 support.

Ethernet LAN Settings

set ip ethernet A option { on | off }

Enables or disables communications through the designated Ethernet port in the Gateway.

You must enable TCP/IP functions for an Ethernet port before you can conﬁgure its network

settings.

set ip ethernet A address

ip_address

Assigns an IP address to the Netopia Gateway on the local area network. The IP address

you assign to the local Ethernet interface must be unique on your network. By default, the

Netopia Gateway uses 192.168.1.254 as its LAN IP address.

set ip ethernet A broadcast

broadcast_address

Speciﬁes the broadcast address for the local Ethernet interface. IP hosts use the broad-

cast address to send messages to every host on your network simultaneously.

The broadcast address for most networks is the network number followed by 255. For

example, the broadcast address for the 192.168.1.0 network would be 192.168.1.255.

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253

CONFIG Commands

set ip ethernet A netmask

netmask

Speciﬁes the subnet mask for the local Ethernet interface. The subnet mask speciﬁes

which bits of the 32-bit binary IP address represent network information. The default sub-

net mask for most networks is 255.255.255.0 (Class C subnet mask).

set ip ethernet A restrictions { none | admin-disabled }

Speciﬁes whether an administrator can open a telnet connection to a Netopia Gateway

over an Ethernet interface (

A

= the LAN;

B

= the WAN, in the case of Ethernet WAN mod-

els) to monitor and conﬁgure the unit.

The

admin-disabled

argument prevents access to the device via telnet, web, and SNMP.

By default, administrative restrictions are

none

on the LAN, but

admin-disabled

is set on

the WAN. This means that, by default, an administrator can open, for example, a telnet

connection from the LAN, but not the WAN.

set ip ethernet A rip-send

{ off | v1 | v2 | v1-compat | v2-MD5 }

Speciﬁes whether the Netopia Gateway should use Routing Information Protocol (RIP)

broadcasts to advertise its routing tables to other routers on your network. RIP Version 2

(RIP-2) is an extension of the original Routing Information Protocol (RIP-1) that expands the

amount of useful information in the RIP packets. While RIP-1 and RIP-2 share the same

basic algorithms, RIP-2 supports several additional features, including inclusion of subnet

masks in RIP packets and implementation of multicasting instead of broadcasting (which

reduces the load on hosts which do not support routing protocols. RIP-2 with MD5 authen-

tication is an extension of RIP-2 that increases security by requiring an authentication key

when routes are advertised.

If you specify

v2-MD5

, you must also specify a

rip-send-key

. Keys are ASCII strings with a

maximum of 31 characters, and must match the other router(s) keys for proper operation

of MD5 support.

Depending on your network needs, you can conﬁgure your Netopia Gateway to support RIP-

1, RIP-2, or RIP-2MD5.

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254

set ip ethernet A rip-receive { off | v1 | v2 | v1-compat | v2-MD5 }

Speciﬁes whether the Netopia Gateway should use Routing Information Protocol (RIP)

broadcasts to update its routing tables with information received from other routers on

your network.

If you specify

v2-MD5

, you must also specify a

rip-receive-key

. Keys are ASCII strings

with a maximum of 31 characters, and must match the other router(s) keys for proper oper-

ation of MD5 support.

Default IP Gateway Settings

set ip gateway option { on | off }

Speciﬁes whether the Netopia Gateway should send packets to a default Gateway if it does

not know how to reach the destination host.

set ip gateway interface {

ip-address | ppp-vccn }

Speciﬁes how the Netopia Gateway should route information to the default Gateway. If you

select

ip-address

, you must enter the IP address of a host on a local or remote network.

If you specify

ppp

, the Netopia unit uses the default gateway being used by the remote

PPP peer.

IP-over-PPP Settings.

Use the following commands to conﬁgure settings for routing IP

over a virtual PPP interface.

☛

NOTE:

For a DSL platform you must identify the virtual PPP interface [

vccn

], a num-

ber from 1 to 8.

set ip ip-ppp [

vccn

] option { on | off }

Enables or disables IP routing through the virtual PPP interface. By default, IP routing is

turned on. If you turn off IP routing and save the new conﬁguration, the Netopia Gateway

clears IP routing settings

Page 255 / 351

255

CONFIG Commands

set ip ip-ppp

[

vccn

]

address

ip_address

Assigns an IP address to the virtual PPP interface. If you specify an IP address other than

0.0.0.0, your Netopia Gateway will not negotiate its IP address with the remote peer. If the

remote peer does not accept the IP address speciﬁed in the

ip_address

argument as

valid, the link will not come up.

The default value for the

ip_address

argument is 0.0.0.0, which indicates that the vir-

tual PPP interface will use the IP address assigned to it by the remote peer. Note that the

remote peer must be conﬁgured to supply an IP address to your Netopia Gateway if you

enter 0.0.0.0 for the

ip_address

argument.

set ip ip-ppp [

vccn

] peer-address

ip_address

Speciﬁes the IP address of the peer on the other end of the PPP link. If you specify an IP

address other than 0.0.0.0, your Netopia Gateway will not negotiate the remote peer's IP

address. If the remote peer does not accept the address in the

ip_address

argument as

its IP address (typically because it has been conﬁgured with another IP address), the link

will not come up.

The default value for the

ip_address

argument is 0.0.0.0, which indicates that the vir-

tual PPP interface will accept the IP address returned by the remote peer. If you enter

0.0.0.0, the peer system must be conﬁgured to supply this address.

set ip ip-ppp [

vccn

] restriction { admin-disabled | none }

Speciﬁes restrictions on the types of trafﬁc the Netopia Gateway accepts over the PPP vir-

tual circuit. The

admin-disabled

argument means that access to the device, via telnet,

web and SNMP is disabled. The

none

argument means that all trafﬁc is accepted.

set ip ip-ppp [

vccn

] addr-mapping { on | off }

Speciﬁes whether you want the Netopia Gateway to use network address translation (NAT)

when communicating with remote routers. Network address translation lets you conceal

details of your network from remote routers. By default, address mapping is turned on.

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