Motorola 3347-02 Router Manual PDF (Setup & Configuration Guide)

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CONFIG Commands

remote network. If you specify

ppp

, the Motorola 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 Motorola Netopia®

Gateway clears IP routing settings

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 Motorola 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 Motorola Netopia® Gate-

way 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 Motorola 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.

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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

] restrictions { admin-disabled | none }

Speciﬁes restrictions on the types of trafﬁc the Motorola Netopia® Gateway accepts over

the PPP virtual 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 ip-ppp [

vccn

] addr-mapping [ on | off ]

Speciﬁes whether you want the Motorola Netopia® Gateway to use network address trans-

lation (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 sin-

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

set ip ip-ppp [

vccn

] auto-sensing [ off | dhcp/pppoe | pppoe/pppoa ]

Enables or disables DHCP/PPPoE or PPPoE/PPPoA autosensing on the speciﬁed interface.

Setting this to

DHCP/PPPoE

enables automatic sensing of your WAN connection type:

PPPoE or DHCP. The gateway attempts to connect using PPPoE ﬁrst. If the Gateway fails to

connect after 60 seconds, it switches to DHCP. As soon as it can connect via DHCP, the

Gateway chooses and sets DHCP as its default. Otherwise, after attempting to connect via

DHCP for 60 seconds, the Gateway switches back to PPPoE. The Gateway will continue to

switch back and forth in this manner until it successfully connects. Similarly, selecting

PPPoE/PPPoA

causes the Gateway to attempt to connect by trying these protocols in par-

allel, and using the ﬁrst one that is successful.

set ip ip-ppp [

vccn

] rip-send { off | v1 | v2 | v1-compat | v2-MD5 }

Speciﬁes whether the Motorola Netopia® Gateway unit should use Routing Information Pro-

tocol (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. For example, inclusion of

subnet masks in RIP packets and implementation of multicasting instead of broadcasting.

This last feature reduces the load on hosts which do not support routing protocols. RIP-2

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CONFIG Commands

with MD5 authentication is an extension of RIP-2 that increases security by requiring an

authentication key when routes are advertised.

This command is only available when address mapping for the speciﬁed virtual circuit is

turned “off”.

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 ip-ppp [

vccn

] rip-receive { off | v1 | v2 | v1-compat | v2-MD5 }

Speciﬁes whether the Motorola Netopia® Gateway should use Routing Information Protocol

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

on the other side of the PPP link.

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.

set ip ip-ppp vcc

n

igmp-null-source-addr [ on | off ]

Speciﬁes whether you want the Motorola Netopia® Gateway to identify the source IP

address of every IGMP packet transmitted from this interface as 0.0.0.0 when

mcast-fwd

is set to

on

. This complies with the requirements of TR-101, and removes the need for a

publicly advertised IP address on the WAN interface.

set ip ip-ppp vcc

n

mcast-fwd [ on | off ]

Speciﬁes whether you want the Motorola Netopia® Gateway interface to act as an IGMP

proxy host.

set ip ip-ppp vcc

n

unnumbered [ on | off ]

Speciﬁes whether you want the Motorola Netopia® Gateway to have its WAN interface

unnumbered, i.e. set to 0.

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224

set ip ip-ppp vcc

n

dns acquired-dns-priority [ 0 - 255 ]

Sets the priority for DNS acquired via PPP. See

“

Domain Name System Settings

” on

page

208

for more information.

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CONFIG Commands

Static ARP Settings

Your Motorola Netopia® Gateway maintains a dynamic Address Resolution Protocol (ARP)

table to map IP addresses to Ethernet (MAC) addresses. Your Motorola Netopia® Gateway

populates this ARP table dynamically, by retrieving IP address/MAC address pairs only

when it needs them. Optionally, you can deﬁne static ARP entries to map IP addresses to

their corresponding Ethernet MAC addresses. Unlike dynamic ARP table entries, static ARP

table entries do not time out.

You can conﬁgure as many as 16 static ARP table entries for a Motorola Netopia® Gate-

way. Use the following commands to add static ARP entries to the Motorola Netopia®

Gateway static ARP table:

set ip static-arp

ip-address

ip_address

Speciﬁes the IP address for the static ARP entry. Enter an IP address in the

ip_address

argument in dotted decimal format. The

ip_address

argument cannot be 0.0.0.0.

set ip static-arp

ip-address

ip_address

hardware-address

MAC_address

Speciﬁes the Ethernet hardware address for the static ARP entry. Enter an Ethernet hard-

ware address in the

MAC_address

argument in

nn.nn.nn.nn.nn.nn

(hexadecimal) for-

mat.

IGMP Forwarding

set ip igmp-forwarding [ off | on ]

Turns IP IGMP forwarding off or on. The default is off.

IPsec Passthrough

set ip ipsec-passthrough [ off | on ]

Turns IPsec client passthrough off or on. The default is on.

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