Allied Telesis AT-WA1104G-10 manual CR00014300, MAC-forced forwarding, CR00014354

Features in 291-04

85

CR

Module

Level

Description

AR400

AR7x5

AR7x0S

Rapier i

AT8800-

AT-8600

AT-8700XL

x90048-

AT-9900

AT-9800

CR00014300

DHCP

-

The following enhancements have been made to DHCP snooping, to support

–

–

–

Y

Y

Y

Y

Y

Y

–

Snooping,

MAC-forced forwarding:

MACFF

■ MAC-forced forwarding checks the DHCP snooping database to find out

which router has been assigned to each DHCP client. DHCP snooping

determines this from the router list in DHCP acknowledgement messages.

However, some clients do not request a router. DHCP snooping now modifies

request messages from such clients, to ensure that they request a router. This

enables MAC-forced forwarding to interoperate with such clients.

■ Output from the command show dhcpsnooping database now displays the

list of routers that are assigned to each client, as shown in bold in the

following example:

Current valid entries

MAC Address

IP Address

Expires(s)

VLAN

Port

ID

Source

Router list

---------------------------------------------------------------------

00-00-cd-28-06-7b 192.168.99.1

52

1

13

2

Dynamic

192.168.199.254

CR00014354

Ethernet

-

This enhancement enables you to use 100 Mbps fiber SFPs with AR770S routers.

–

–

Y

–

–

–

–

–

–

–

Switch

Support has been added for AT-SFPX/15 and AT-SFPX/40 SFPs.

Version 291-10

C613-10488-00 REV G