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AES-100 User’s Guide
Bridge Commands 7-3
7.3.5 Macfilter Delete Command
Syntax:
192.168.1.1 bridge> macfilter delete <port> <mac>
where
<port> =
a bridge port number.
<mac> =
the source MAC address in "00:a0:c5:12:34:56" format.
This command removes a configured source MAC address from a port specified by you.
7.4 Filter Commands
7.4.1 Filter Command
Syntax:
192.168.1.1 bridge> filter
This command displays the filtering database.
7.4.2 A Note about IGMP Snooping
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1sender to 1 recipient) or Broadcast (1
sender to everybody on the network). Multicast delivers IP packets to just a group of hosts on the network. IGMP
(Internet Group Multicast Protocol) is a session-layer protocol used to establish membership in a Multicast group -
it is not used to carry user data. Refer to RFC 2236 for information IGMP version 2 and RFC 1112 for IGMP
version 1. A Layer 2 switch can passively snoop on IGMP Query and Report packets transferred between IP
Multicast Routers/Switches and IP Multicast host groups to learn the IP Multicast group members. It checks IGMP
packets passing through it, picks out the group registration information, and configures multicasting accordingly.
IGMP Snooping generates no additional network traffic, allowing you to significantly reduce the multicast traffic
passing through your switch.
7.4.3 Mfilter Command
Syntax:
192.168.1.1 bridge> mfilter
This command displays the multicast filtering database. The mfilter command is what allows you to monitor the
AES-100’s IGMP snooping activities.
The following is an example of a multicast filtering database.
192.168.1.1 bridge> mfilter
ID GDA MAC Member Ports