ZyXEL Communications IES-1248-51 Guia do Utilizador descarregar pdf (Página 400)

100

101

Chapter 54 DHCP Commands

IES-1248-51V User’s Guide

400

54.6 DHCP Snoop Commands

Use these commands to configure or show DHCP snooping settings on the

subscriber ports. The system gets the client MAC-IP address information (in the

reply from a DHCP server) and stores it in the DHCP snooping table. The system

forwards packets from only the clients whose MAC-IP address is in the DHCP

snooping table. Packets from unknown IP address(es) are not forwarded

(dropped). This feature prevents clients from assigning their own static IP

addresses.

In some cases, you might want to allow packets from an IP address not offered by

the DHCP server. This might apply, for example, to static IP addresses. In this

case, you can specify the IP address whose packets are allowed, and the IES-

1248-51V forwards these packets as well.

Table 145 DHCP Snoop Commands

COMMAND DESCRIPTION P

switch dhcpsnoop enable <port-

list>

This command activates the DHCP snooping

feature on the specified port(s).

switch dhcpsnoop disable

<port-list>

This command disables the DHCP snooping

feature on the specified port(s).

switch dhcpsnoop flush <port-

list>

This command clears the DHCP snooping

binding table on the specified port(s). The

system also automatically clears the binding

table when you disable DHCP snooping.

switch dhcpsnoop lan2lan

disable

This command disables LAN to LAN DHCP

services.

switch dhcpsnoop lan2lan

enable

This command enables LAN to LAN DHCP

services.

switch dhcpsnoop lan2lan show This command displays whether LAN to LAN

DHCP services are currently enabled or

disabled.

switch dhcpsnoop pool set

This command adds the specified IP address

to the static IP pool for the specified port.

The IES-1248-51V forwards packets from IP

addresses in this pool, as well as packets

from IP addresses learned through DHCP

snooping. You can set up to three IP

addresses for each port, but you have to set

each IP address for each port one at a time.

You cannot add IP addresses to a static IP

pool if the pool already has three IP

addresses in it. You have to delete one of the

existing IP addresses first.

port: The selected ADSL port number(s).

1 2 ... 395 396 397 398 399 400 401 402 403 404 405 ... 653 654

Comentários a estes Manuais

Sem comentários

ZyXEL Communications IES-1248-51 Guia do Utilizador Página 400

Comentários a estes Manuais

Manuais e produtos relacionados com Redes ZyXEL Communications IES-1248-51