The Internet Group Management Protocol (IGMP) is a protocol of the Internet Protocol (IP) suite. IP manages multicast traffic by using switches, routers, and hosts that support IGMP. Enabling IGMP allows the switch to detect IGMP queries and IGMP Report packets to manage IP multicast traffic through the switch. IGMP has three fundamental types of message as follows:

Message

Description

Query

A message sent from the queries (IGMP router or switch)

 

asking for a response from each host belonging to a multicast

 

group.

Report

A message sent by a host to the queries to indicate that the

 

host wants to be, or is a member of, a given group indicated

 

in the report message.

Leave Group

A message sent by a host to the queries to indicate that the

 

host has quit being a member of a specific multicast group.

2.4.6.2 Static MAC Address

When you add a static MAC address, it remains in the switch's address table, regardless of whether the device is physically connected to the switch. This saves the switch from having to re-learn a device's MAC address after it has been disconnected or powered-off from the network, and then reconnected at some time later.

1.At the main menu, click administrator Filter Database Static MAC Addresses.

2.In the MAC address box, enter the MAC address to and from which the port should permanently forward traffic, regardless of the devices network state.

3.In the Port Number box, enter a port number.

4.If tag-based (IEEE 802.1Q) VLAN’s are set up on the switch, static addresses are associated with individual VLAN’s. Type the VID (tag-based VLAN’s) to associate with the MAC address.

5.Click Add.

-20 -

Page 21
Image 21
Lindy 25030 user manual Static MAC Address, Message Description Query