OT: Expert Advice required

Dear Experts,

         I have a real scenario in which I required your expert advice. The
scenario is as follows

1> 60 Servers with Dual NIC to be made redundant in Dual Core Switching
environment
2> Core Switches are Cisco 4500
3> The Servers are having Multicast forwarding application which takes
multicast from internet and then relay it to Local LAN as if they are the
source.

The problem in the design is that I have to use the other NIC card to be
exactly in the same IP subnet of the internet as to receive the multicast
and thus waste my one NIC of those servers, The other problem occur if I use
dual IP on single NIC then the Multicast from the internet and Local LAN is
getting duplicated and increase B/W consumption and ambiguity on the Local
LAN.

Please help me to design the solution.

I can think of the following technologies to be used

1> RSTP on Core and Access SW for the LAN Segment redundancy
2> HSRP on Cisco Core Switches for Core Switch Redundancy
3> Reversible NAT for the Multicast feed receiving
4> IP Multicast routing with SSM for scrutinizing the duplicate Multicast /
IGMP Filtering
5> Private VLAN to have some granularity in the application specific access.
6> NLB with Server NIC to have server redundancy.

Expert please feel free to contact if required further details.

Thanks in Advance,

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Received on Mon May 30 2011 - 19:09:39 ART