B&B Electronics EIR608-4SFP - Manual - Manual (Page 91)

Manual Documentation Number: EIR608-xSFP_4812m 83
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
TOS Configuration
 TOS priority: the system provides 0 to 63 TOS priority levels. Each
level has four types of priority
– high, middle, low, and lowest. The default
value is
‗Lowest‘. When an IP packet is received, the system will check the
TOS level value in the IP packet. For example, if the TOS level 25 is high
and the port is following the TOS priority policy only, when a packet is
received, the system will check the TOS value of the received IP packet. If
the TOS value of received IP packet is 25(priority = high), then the packet
will have highest priority.
 Click
Apply .
IGMP Configuration
The Internet Group Management Protocol (IGMP) is an internal protocol of
the Internet Protocol (IP) suite. IP manages multicast traffic by using
switches, routers, and hosts that support IGMP. Enabling IGMP allows the
ports to detect IGMP queries and report packets and manage IP multicast
traffic through the switch. IGMP has three fundamental types of message.
Message Description
Query
A message sent from the querier (IGMP router or switch)
asking for a response from each host belonging to the
multicast group.
Report
A message sent by a host to the querier 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 querier to indicate that the
host has quit being a member of a specific multicast group.