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Chapter 44 DHCP Commands
IES-612-51A User’s Guide
295
where
This command adds the specified information for the relay agent.
44.4 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 only forwards packets from 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.
44.4.1 DHCP Snoop Enable Command
Syntax:
ras> switch dhcpsnoop enable <portlist>
where
This command activates the DHCP snooping feature on the specified port(s). The following
example enables DHCP snooping on port 1.
Figure 146 DHCP Snoop Enable Command Example
44.4.2 DHCP Snoop Disable Command
Syntax:
ras> switch dhcpsnoop disable <portlist>
where
[<relay info>] =
Up to 23 ASCII characters of additional information for the
IES-612-51A to add to the DHCP requests that it relays to a
DHCP server.
Examples of information you could add would be the name
of the IES-612-51A or the ISP.
<portlist> =
You can specify a single port <1>, all ports <*> or a list of
ports <1,3,enet1>. You can also include a range of ports
<1,5,6~10,enet1,enet2>.
ras> switch dhcpsnoop enable 1
<portlist> =
You can specify a single port <1>, all ports <*> or a list of
ports <1,3,enet1>. You can also include a range of ports
<1,5,6~10,enet1,enet2>.