Example 3: Layer 3 Server Cluster With Ip Multicast Address To Cluster (Igmp) - Alcatel-Lucent OmniSwitch 9900 Series Network Configuration Manual

Configuring High Availability VLANs
Example 3: Layer 3 Server Cluster with IP Multicast Address to
Cluster (IGMP)
This example shows that a server cluster can be configured with a unique IP address and a IP multicast
address. For this scenario, the server cluster IP address needs to be a unicast address and the MAC address
(ARP entry) can be unicast or L2 multicast or IP multicast. The MAC address must be configured through
CLI ARP resolution to a server cluster MAC, and must be configured before actual routing
.
Switch connected to an L3 server cluster (IGMP) through 3 ports (1/3,1/4,1/5)
•
There is no provision for port list configuration and Ports are derived dynamically using the IGMP
snooping of the reports from the server cluster (IGMP v2 reports).
•
The traffic which ingresses on 1/1 or 1/2 destined to the server cluster IP is routed to all the ports
which are members of the IP multicast group of the server cluster.
•
The ingress ports is on a different VLAN as the server cluster IP interface. Join and Leave messaged
keep updating the egress port list. However all the egress ports need to be in the same VLAN as the IP
interface of server cluster.
•
The other traffic is switched according to the normal switching/routing logic.
•
Egress port can be a linkagg port as well.
Note. When a server cluster tries to send a bridged or routed packet to itself, a copy of the packet goes back
to the sender's (server cluster) port.
OmniSwitch AOS Release 8 Network Configuration Guide December 2017
Application Examples
page 5-13