Arris NVG595 ATnT Router Manual PDF (Setup & Configuration Guide)

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141

set ip igmp last-member-interval

value

Sets the last member query interval: the amount of time in tenths of a second that the IGMP gateway waits to

receive a response to a Group-Specific Query message. The last member query interval is also the amount of

time in seconds between successive Group-Specific Query messages. The default is 1 second (10 deci-seconds).

set ip igmp last-member-count

value

Sets the last member query count: the number of Group-Specific Query messages sent before the gateway

assumes that there are no members of the host group being queried on this interface. The default is 2.

set ip igmp default-fwd-allow [ on | off ]

Turns default forwarding on or off. The default is

on

.

set ip igmp snoop-entry-time

seconds

The

snoop-entry-time

is the amount of time an entry will remain in the snooping table (in seconds) after being

added. An entry is added when a “JOIN” is seen from a multicast client. Any new joins (triggered by upstream que-

ries) will reset the timeout back to

seconds

. If no additional joins are seen, the entry will expire after

seconds

.

Default is

130

.

set ip igmp snooping-unreg-mode [ block | flood ]

The

snooping-unreg-mode

can be set to

block

or

ﬂood

. This indicates what should happen to unregistered mul-

ticast traffic – traffic that hasn't been subscribed to by any clients. If set to

ﬂood

, the traffic will be sent to all LAN

ports. If set to

block

, the traffic will not be sent to any LAN ports; it will be dropped. Default is

block

.

NTP commands

set ip ntp enable [ on | off ]

Enables or disables acquiring the time of day from an NTP (Network Time Protocol) server.

set ip ntp server-address

server_address

set ip ntp alt-server-address

alt_server_address

Specify the NTP server(s) to use for time updates. The NTP

server-address

and

alt-server-address

can be

entered as DNS names as well as IP addresses.

set ip ntp update-period

minutes

update-period

specifies how often, in minutes, the Gateway should update the clock. Default is

1440

.

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Administrator’s Handbook

142

Application Layer Gateway (ALG) commands

These commands allow you to enable or disable the router’s support for a variety of Application Layer Gateways

(ALGs). An application layer gateway (ALG) is a NAT component that helps certain application sessions to pass

cleanly through NAT. Each ALG has a slightly different function based on the particular application’s protocol-spe-

cific requirements.

An internal client first establishes a connection with the ALG. The ALG determines if the connection should be

allowed or not and then establishes a connection with the destination computer. All communications go through

two connections – client to ALG and ALG to destination. The ALG monitors all traffic against its rules before decid-

ing whether or not to forward it. The ALG is the only address seen by the public Internet so the internal network is

concealed. In some situations, it may be desirable to disable some of the ALGs.

set ip alg esp-enable [ on | off ]

Turns the ESP (Encapsulated Security Payload) ALG for file transfers

on

or

off

. Default is

on

.

set ip alg esp-setup-timeout

value

Specifies the timeout value for the ESP ALG setup. Default is

180

.

set ip alg esp-stream-timeout

value

Specifies the timeout value for the ESP ALG streaming. Default is

300

.

set ip alg ftp-enable [ on | off ]

Turns the FTP (File Transfer Protocol) ALG for file transfers

on

or

off

. Default is

on

.

set ip alg h323-enable [ on | off ]

Turns the H323 ALG for audio, video, and data communications across IP-based networks

on

or

off

. Default is

on

.

set ip alg pptp-enable [ on | off ]

Turns the PPTP (Point-to-Point Transfer Protocol) ALG for authentication

on

or

off

. Default is

on

.

set ip alg sip-enable [ on | off ]

Turns the SIP (Session Initiation Protocol) ALG for voice communication initiation

on

or

off

. Default is

on

.

set ip alg tftp-enable [ on | off ]

Turns the TFTP (Trivial File Transfer Protocol) ALG for simple file transfers and firmware updates

on

or

off

.

Default is

on

.

Dynamic DNS Commands

set ip dynamic-dns enable [ off | on ]

Enables or disables Dynamic DNS. Dynamic DNS support allows you to use the free services of www.dyndns.org.

Dynamic DNS automatically directs any public Internet request for your computer's name to your current dynami-

cally-assigned IP address. This allows you to get to the IP address assigned to your Gateway, even though your

actual IP address may change as a result of a PPPoE connection to the Internet.

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143

set ip dynamic-dns service-type [ dyndns ]

set ip dynamic-dns username

myusername

set ip dynamic-dns password

mypassword

set ip dynamic-dns hostname

myhostname

set ip dynamic-dns retries [ 1 - 64 ]

Enables or disables dynamic DNS services. The default is

off

. If you specify

dyndns.org

, you must supply your

hostname, username for the service, and password. Number of retries defaults to

5

.

Default server settings

Set ip wan-allocation mode [ normal | defaultserver ]

Sets the WAN mode to direct your Gateway to forward all externally initiated IP traffic (TCP and UDP protocols

only) to a default host on the LAN, otherwise this feature is disabled. Default is

normal

.

Link commands

link

s represent physical connections. Currently, port-based VLAN support is provided at this level. Your Gateway

is capable of adding and stripping 802.1Q tags to and from

frames before transmission on its LAN interfaces. See

also

“

Filterset commands

” on page

124

and

“

Queue commands

” on page

128

for more information.

set link name

name

type [ ethernet | ppp ]

Specifies whether the

type

of the

link

named

name

is

ethernet

or

ppp

.

set link name

name

mtu-override [ 0 - 1500 ]

Specifies whether the

M

aximum

T

ransmission

U

nit value should be set to other than the standard 1500. A setting

of 0 (zero) turns off override.

set link name

name

igmp-snooping [ off | on ]

Turns

igmp-snooping

off

or

on

on the

link

named

name

.

set link name

name

port-vlan ports

[ lan-1... 4 | hpna | ssid-1...4 | ptm | vc-1 | vc-2 ]

Specifies a port-based VLAN on the selected ports on the

link

named

name

.

set link name

name

port-vlan priority [ 0 - 7 ]

Specifies the 802.1p priority bit. If you set this to a value greater than 0, all packets of this VLAN with unmarked

priority bits (pbits) will be re-marked to this priority.

set link name

name

tagged-vlan name

integer

ports

[ lan-1... 4 | hpna | ssid-1...4 | ptm | vc-1 | vc-2 ]

Specifies a tagged VLAN on the selected port on the

link

named

name

. Default is

ptm

.

set link name

name

tagged-vlan name

integer

vid

vlan_id

Specifies a VLAN ID (vid) on the selected link named

name

. Default is

0

.

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Administrator’s Handbook

144

set link name

name

tagged-vlan name

integer

priority [ 0 - 7 ]

Specifies the 802.1p priority bit. If you set this to a value greater than 0, all packets of this VLAN with unmarked

priority bits (pbits) will be re-marked to this priority.

set link name

name

supplicant type [ none | eap-tls ]

Specifies whether the EAP TLS supplicant is enabled on the link named

name

. Default is

eap-tls

.

set link name

name

supplicant priority [ 0 - 7 ]

Sets the supplicant priority on the link named

name

when

supplicant type

is

eap-tls

. Default is

0

.

set link name

name

ppp sub-link

link_name

Specifies a name

link_name

for this secondary link when one is required.

set link name

name

ppp auth-type [ on | off ]

Enables or disables PPP login authorization.

set link name

name

ppp username

uname

Specifies a username

uname

for authentication on the specified link when

ppp auth-type

is set to

on

.

set link name

name

ppp password

pwd

Specifies a password

pwd

for authentication on the specified link when

ppp auth-type

is set to

on

.

set link name

name

ppp magic-number [ on | off ]

Enables or disables LCP magic number negotiation.

set link name

name

ppp protocol-compression [ off | on ]

Specifies whether you want the Gateway to compress the PPP Protocol field when it transmits datagrams over the

PPP link.

set link name

name

ppp max-failures

integer

Specifies the maximum number of Configure-NAK messages the PPP module can send without having sent a

Configure-ACK message. The

integer

argument can be any number between 1 and 20.

set link name

name

ppp max-configures

integer

Specifies the maximum number of unacknowledged configuration requests that your Gateway will send. The

inte-

ger

argument can be any number between 1 and 20.

set link name

name

ppp max-terminates

integer

Specifies the maximum number of unacknowledged termination requests that your Gateway will send before ter-

minating the PPP link. The

integer

argument can be any number between 1 and 10.

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145

set link name

name

ppp restart-timer

integer

Specifies the number of seconds the Gateway should wait before retransmitting a configuration or termination

request. The

integer

argument can be any number between 1 and 30.

set link name

name

ppp connection-type [ instant-on | always-on ]

Specifies whether a PPP connection is maintained by the Motorola

®

Gateway when it is unused for extended peri-

ods. If you specify

always-on

, the Gateway never shuts down the PPP link. If you specify

instant-on

, the Gate-

way shuts down the PPP link after the number of seconds specified in the time-out setting (below) if no traffic is

moving over the circuit.

set link name

name

ppp echo-request [ on | off ]

Specifies whether you want your Gateway to send LCP echo requests. You should turn off LCP echoing if you do

not want the Gateway to drop a PPP link to a nonresponsive peer.

set link name

name

ppp echo-failures

integer

Specifies the maximum number of lost echoes the Gateway should tolerate before bringing down the PPP con-

nection. The

integer

argument can be any number from between 1 and 20.

set link name

name

ppp echo-interval

integer

Specifies the number of seconds the Gateway should wait before sending another echo from an LCP echo

request. The

integer

argument can be any number from between 5 and 300 (seconds).

set link name

name

ppp mru

integer

Specifies the Maximum Receive Unit (MRU) for the PPP interface. The

integer

argument can be any number

between 128 and 1492 for PPPoE; 1500 otherwise.

set link name

name

ppp peer-dns [ on | off ]

Controls whether the Gateway accepts nameserver addresses from the peer.

◆

The default is

on

, which means the Gateway expects to get nameserver addresses when the PPP link comes

up. This especially applies when the primary WAN connection is PPP.

◆

However, there are some unusual situations where the PPP connection is

not

the primary WAN, for example

when the connection is used only for management. In that situation it may be desirable to

not

pick up more

nameserver addresses. You can do that by setting the parameter to

off

.

☛

NOTE:

This is an expert-mode setting that will rarely be used. The setting should be left

on

, unless you are

an expert user who knows you do not want the Gateway to acquire any nameserver addresses from

this PPP connection.

set link name

name

pppoe service-name

name

Specifies an ISP name or a class or quality of service. The Service Name tells the access concentrator which net-

work service the Motorola Gateway is trying to reach.

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