Nortel Networks NB5PLUS4/W - Manual (Page 57)

YML754 Rev1 NB5Plus4/W User Guide
www.netcomm.com.au 57
To edit an existing Bridge Filter Rule, click the radio button adjacent to the Filter
Rule name. The Rule will then appear in the top half of the Bridge Filter control
screen where it can be edited. When editing is complete, click ‘Add’ to return the
Rule to the list of existing rules.
To delete Bridge Filter Rules, click on the ‘Delete’ tick box; multiple deletions can be
made by shift-clicking Delete tick boxes; Select All will select every rule. When the
desired selections are made, effect deletion by clicking on Apply.
To save changes, click on Apply.
Hidden Bridge Filter Rules
The Bridge filter table contains three hidden rules. These rules are built into the
Router to ensure the user does not become locked out by entering a rule which
prevents further access to the router.
The first rule allows any and all ARP frames through the system.
The second rule allows all IPv4 frames with the destination Bridge address of the
bridge to go through.
The third rule allows all IPv4 frames with the source MAC address of the bridge to
go through.
TIP: To find the MAC address of a Windows-based computer, at the DOS prompt
type: ipconfig /all.
Advanced > Multicast
IGMP [=Internet Group Management Protocol] Multicast enables communication