Allied Telesis Rapier i Series, AT-8600 Series manual Add the tagged uplink ports to the Vlan

Configuration examples

XAdd the tagged uplink ports to the VLAN:

add vlan="48" port=24 frame=tagged uplink

XAdd the untagged ports for the customers:

add vlan="48" port=1-23

This is a layer 2 solution. The IP protocol does not need to be configured.

XEnable DHCP snooping and Option 82 support:

enable dhcpsnooping

enable dhcpsnooping option82

It is also possible to enable DHCP snooping ARP security. If enabled, this will ensure that ARP packets received on non-trusted ports are only permitted if they originate from an IP address that has been allocated and snooped by DHCP (enable dhcpsnooping arpsecurity).

XDefine the DHCP snooping trusted ports:

set dhcpsnooping port=24 trusted=yes

These ports can receive Option 82 information, and the switch will permit them to send Option 82.

XDefine the maximum number of DHCP leasees permitted on each port:

set dhcpsnooping port=1-23 maxlease=1

XDefine the string that will be used in the subscriber-ID suboption portion of the Option 82 inserted into DHCP packets:

set dhcpsnooping port=1 subscriberid="Ground Floor Room 1"

Page 15 AlliedWare™ OS How To Note: DHCP Snooping on Rapier-style switches