Hi, has somebody exact knowledge
about running MS as NLB-Cluster in Multicast-Mode.
We want to use it instead of Unicast-Mode, because the Cluster-Members are located in the same VLAN with other (non-cluster-Members) Servers.
As I found there is a configuration-option in Multicast-Mode for IGMP.
So I know I ll have to configure static ARP entries on the routers in this VLAN. (Because Routers/L2-switches do not accept a MC-MAC-Address as
a answer for a ARP-request for an UC-IP-adress, which is the Clusters IP-Adress)
Thats all we want to configure statically.
So as I read the MC-MAC-address is derived from the UC-IP-Address in any way. Does anybody know how the relationship is, or is the MAC-adress
configurable in the Cluster configuration ?
If we know the MC-MAC-address and the MS-Guys configured the IGMP-option the next question would be for which IP-Multicast-adress they send a
IGMP-join (because there is a 32:1 overlap between IP-MC and MAC-MC) On all our switches we use IGMP-Snooping (Assume the Cluster is using IGMP-V2).
Does anybody know how MS is doing this.
I just would need this knowledge to prevent an unwanted overlay with already existing MC-groups.
So in easy words:
Given
IP-UC-Cluster-Address
Which
MAC-MC-Cluster-Address do they use in the ARP-reply
Which
IP-MC-Address do they use for IGMP-Join
Thx in advance
Hubert
