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

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126

Appendix A

CONFIG Commands

.

Specifies restrictions on the types of traffic the 3220-H accepts over the DSL vir-

tual circuit. The

admin-disable

argument means that router traffic is

accepted but that administrative commands are ignored. The

admin-only

argument means that router traffic is ignored by that administrative commands

are accepted. The

none

argument means that all traffic is accepted. RIP and

ICMP traffic is still accepted.

Specifies whether you want the 3220-H 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”.

Specifies whether you want the 3220-H to respond when it receives an address

resolution protocol for devices behind it.

By default, proxy ARP is turned “Off”.

Ethernet Settings

Enables or disables communications through the designated Ethernet port in the

Gateway. You must enable TCP/IP functions for and Ethernet port before you can

configure it network settings

.

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

address you assign to the local Ethernet interface must be unique on your net-

work. By default, the Cayman Gateway uses 192.168.1.254 as its LAN IP address.

DSL

set ip dsl

vccn

restriction { admin-disabled | admin-only|

none }

DSL

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

DSL

set ip dsl vccn proxy-arp { on | off }

ENET

set ip ethernet [ A | B ] option { on | off }

Many of these setting commands are designated as

BOTH

.

Note however:

For the 2E-H (ENET platform) you have the option of selecting the

A

or

B

ethernet port within the line command.

For the 3220-H (DSL platform) you are specifying the

A

port (your

local LAN) only.

BOTH

set ip ethernet [ A | B ] address

ip_address

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Appendix A

CONFIG Commands

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

broadcast address to send messages to every host on your network simulta-

neously.

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.

Specifies the subnet mask for the local Ethernet interface. The subnet mask speci-

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

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

.

Specifies whether an administrator can open a telnet connection to the Cayman

Gateway over the Ethernet interface to monitor and configure the unit.

Specifies whether an administrator can open a telnet connection to the Cayman

Gateway over the Ethernet interface to monitor and configure the unit. On the

2E-H’s LAN port you can enable or disable administrator access. On the WAN

port, you can enable or disable administrator access or specify that the WAN port

can only be used for administrative traffic. By default, administrative restrictions

are turned off on both Ethernet ports, meaning an administrator can open a tel-

net connection through either port.

BOTH

set ip ethernet [ A | B ] broadcast

broadcast_address

BOTH

set ip ethernet [ A | B ] netmask

netmask

DSL

set ip ethernet

A restrictions { none | admin-disabled }

ENET

set ip ethernet [ A | B ] restrictions

{ none | admin-disabled }

set ip ethernet [ A | B ] restrictions

{ none | admin-disabled | admin-only }

If you specify

admin-only

access for the Cayman 2E-H WAN port, you

will turn off routing services through that port.

RIP and ICMP traffic is still

accepted.

Do

NOT

turn on

admin-only

access without consulting with your net-

work administrator.

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Appendix A

CONFIG Commands

.

Specifies whether you want the Cayman Gateway to respond when it receives an

address resolution protocol for devices behind it. By default, proxy ARP is turned

off.

Specifies whether the Cayman 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 new fea-

tures, 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 Cayman Gateway to

support RIP-1, RIP-2, or both.

Specifies whether the Cayman Gateway should use Routing Information Protocol

(RIP) broadcasts to update its routing tables with information received from other

routers on your network.

.

Specifies whether Network Address Translation (NAT) is enabled for the WAN

(Ethernet B) port on the Cayman Gateway.

Default IP Gateway Settings

Specifies whether the Cayman Gateway should send packets to a default Gateway

if it does not know how to reach the destination host.

Specifies how the Cayman 2E-H 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 Cayman unit uses the default gateway

being used by the remote PPP peer.

BOTH

set ip ethernet [ A | B ] proxy-arp { on | off }

BOTH

set ip ethernet [ A | B ] rip-send

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

BOTH

set ip ethernet [ A | B ] rip-receive

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

ENET

set ip ethernet B addr-mapping { off | on }

BOTH

set ip gateway option { on | off }

ENET

set ip gateway interface { ip-address | ppp }

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Appendix A

CONFIG Commands

Specifies whether the Gateway is reached using a fixed IP address or through a

PPP virtual circuit.

Specifies the IP address of the default IP Gateway.

WAN-to-WAN Routing Settings

Use the following command to configure settings for routing between WAN con-

nections.

Enables or disables routing between WAN connections.

IP-over-PPP Settings

Use the following commands to configure settings for routing IP over a virtual PPP

interface.

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

ing is turned off. You must enable IP routing before you can enter other IP routing

settings for the virtual PPP interface. If you turn off IP routing and save the new

configuration, the Cayman Gateway clears IP routing settings

.

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

than 0.0.0.0, your Cayman 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.

DSL

set ip gateway interface { ip-address | ppp-vccn}

BOTH

set ip gateway default

ip_address

BOTH

set ip interwan-routing { on | off }

Many of these setting commands are designated as

BOTH

.

Note however:

For the 3220-H (DSL platform) you must identify the virtual PPP

interface [

vccn

], a number from 1 to 8.

This argument does not apply to the 2E-H platform.

BOTH

set ip ip-ppp [

vccn

] option { on | off }

BOTH

set ip ip-ppp [

vccn

] address

ip_address

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Appendix A

CONFIG Commands

The default value for the

ip_address

argument is 0.0.0.0, which indicates that

the virtual 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

Cayman Gateway if you enter 0.0.0.0 for the

ip_address

argument.

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 Cayman 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 virtual 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.

Specifies restrictions on the types of traffic the Cayman Gateway accepts over the

PPP virtual circuit. The

admin-only

argument means that router traffic is

ignored but that administrative commands are accepted. The

none

argument

means that all traffic is accepted.

Specifies whether you want the Cayman Gateway to use network address transla-

tion (NAT) when communicating with remote routers. Network address transla-

tion lets you conceal details of your network from remote routers. By default,

address mapping is turned on.

Specifies whether you want to negotiate Van Jacobson header compression for

asynchronous PPP links. By default, TCP/IP header compression is turned on.

When Van Jacobson header compression is turned on, your Cayman Gateway

allocates memory for 16 slots (headers) by default. The number of slots may be

reduced during link configuration if the remote peer can only support a lower

number.

Specifies whether you want your Cayman Gateway to negotiate allocation of an

IP subnet, rather than a single IP address, from a remote access server. You should

only enable this feature if you are told to do so by your Internet Service Provider.

Specifies whether the 3220-H unit should use Routing Information Protocol (RIP)

broadcasts to advertise its routing tables to routers on the other side of the PPP

link. An extension of the original Routing Information Protocol (RIP-1), RIP Version

2 (RIP-2) expands the amount of useful information in the packets. While RIP-1

and RIP-2 share the same basic algorithms, RIP-2 supports several new features.

BOTH

set ip ip-ppp [

vccn

] peer-address

ip_address

BOTH

set ip ip-ppp [

vccn

] restriction

{ admin-disabled | admin-only | none }

BOTH

set ip ip-ppp [

vccn

] addr-mapping { on | off }

BOTH

set ip ip-ppp [

vccn

] vj-compression { on | off }

BOTH

set ip ip-ppp [

vccn

] ipcp-subnet { on | off }

DSL

set ip ip-ppp [

vccn

] rip-send {off | v1 | v2 | v1-compat}

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