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Multimedia Traffic Control with IP Multicast (IGMP)

Excluding Well-Known or Reserved Multicast Addresses from IP Multicast Filtering

Excluding Well-Known or Reserved

Multicast Addresses from IP Multicast

Filtering

Each multicast host group is identified by a single IP address in the range of

224.0.0.0 through 239.255.255.255. Specific groups of consecutive addresses

in this range are termed “well-known” addresses and are reserved for pre-

defined host groups. IGMP does not filter these addresses, so any packets the

switch receives for such addresses are flooded out all ports assigned to the

VLAN on which they were received (except the port on which the packets

entered the VLAN).

The following table lists the 32 well-known address groups (8192 total

addresses) that IGMP does not filter on.

Table 2-2.IP Multicast Address Groups Excluded from IGMP Filtering

Groups of Consecutive

224.0.0.X to 239.0.0.X*

Addresses in the Range of

Groups of Consecutive

Addresses in

224.128.0.X to 239.128.0.X*

the Range of

224.0.0.x 232.0.0.x 224.128.0.x 232.128.0.x

225.0.0.x 233.0.0.x 225.128.0.x 233.128.0.x

226.0.0.x 234.0.0.x 226.128.0.x 234.128.0.x

227.0.0.x 235.0.0.x 227.128.0.x 235.128.0.x

228.0.0.x 236.0.0.x 228.128.0.x 236.128.0.x

229.0.0.x 237.0.0.x 229.128.0.x 237.128.0.x

230.0.0.x 238.0.0.x 230.128.0.x 238.128.0.x

231.0.0.x 239.0.0.x 231.128.0.x 239.128.0.x

* X is any value from 0 to 255.

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HP ProCurve 2910al Switch Specifications

General

Model	HP ProCurve 2910al Switch
Layer	Layer 3
Jumbo Frame Support	Yes
Power Device	Internal power supply
VLAN Support	Yes
Power Supply	100-240 VAC, 50/60 Hz
Ports	24 or 48 x 10/100/1000 ports
Uplink Ports	4 x SFP (mini-GBIC)
Stacking	Yes
MAC Address Table Size	32000 entries
Routing Protocol	RIP, OSPF, BGP, IGMP
Remote Management Protocol	SNMP 1, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c, HTTP, TFTP
Features	VLAN, QoS, IPv6, ACLs
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3af
Operating Temperature	0 to 45°C
Operating Humidity	15% to 95% (noncondensing)
Power over Ethernet (PoE)	PoE+ (802.3at) on PoE+ models, PoE (802.3af) on PoE models