Avaya 580, 882 IP Multicast

12-30 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 12
2. Select the route redistribution entry that you want to delete.
3. Click Delete.
CLI Commands To delete an IP redi stribute list entry, use the following CLI comma nds:
■To delete an entry that redistributes routes to RIP, (configure
router:rip) no redistribute {ospf | local | static}
■To delete an entry that redistributes routes to OSPF, (configure
router:ospf) no redistribute {rip | local | static}
IP Multicast
IP Multicast enables a single host to distribute information to multiple
recipients. To do this, multicast protocols use class D IP addresses to
specify specific multicast group s to which information is sent. The cla ss D
IP address used by multicast routing protocols, ranges from 224.0.0.1 to
224.0.0.255. The class D IP addresses available for general use are
224.0.1.0 to 239.255.255.255.
In addition, IP multicasting distributes information to multicast groups in
two specific ways:
■Multicast Forwarding - allows a switch to forward multicast
traffic from the local multicast server to group members on directly
attached subnetworks. If a multicast packet is forwarded t o multip le
interfaces on one VLAN, only one Forwarding Entry is added on the
VLAN for the packet. One copy of the packet is sent to the VLAN.
To configure interfaces for multicast forwardi ng select Internet
Group Management Protocol (IGMP) for the multicast protocol.
* Note: Interfaces configured for IGMP forwarding will not be able to
participate in multicast sessions distributed through DVMRP
Routing.
■Multicast Routing - allows a switch to deliver multicast traffic
between neighboring routers and across the network using Distance
Vector Multicast Routing Protocol (DVMRP).To configure
interfaces for multicast routing se lect DVMRP for multicast
protocol on all interfaces that are part of a multicast network.Since
IGMP is required on all interfaces that have multicast clien ts, IGMP
is enabled automatically on all interfaces configured for DVMRP.
* Note: You must globally enable IP multicast routing in order to
successfully configure IGMP or DVMRP. See “Routing
Function” earlier in this chapter for instructions o n enabling IP
multicast routing.