How to implement Multicast and Servers using NLB

[5500G-EI]

Hi,

NLB (teaming) and  multicast on 5500 G-EI

Can you please tell me how to implement Multicast on my stack swtich 5500g-EI ?

I have 2 Servers (MS Exchange) with NLB (broadcom).

Config Server 1


IP address a.b.c.X as primary


IP adress a.b.c.Z as secondary


Temaing (With Multicast)


the virtual IP address is a.b.c.Z

Config  Server 2

IP address a.b.c.Y as primary


IP adress a.b.c.Z as secondary


Temaing (With  Multicast)


the virtual IP address is a.b.c.Z

The both servers on VLAN 2

What steps should I follow to do that ?

thank you


 

[Fred_Mancen_1]

This feature only works fine at the Layer 2. You have to enter the command in the ports where your server is attached to:

<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />

<meta content="Word.Document" name="ProgId" />

<meta content="Microsoft Word 11" name="Generator" />

<meta content="Microsoft Word 11" name="Originator" />





Normal

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mac-address multicast <mac-address_virtual_NLB> interface giga <porta> to giga <porta> vlan <n>

In global configuration you have to enter the command:

arp static <virtual_ip_address> <virtual_mac_address>

And the command "undo arp check enable", in order to stop the re-learning in the L2 and L3 tables. Actually the switch will act as a hub, so the inter vlan routing needs to be performed by a next hop (other swith or router). The alternative to this is to install a hub between the server and the switch.

HTH

[5500G-EI]

This is a very risky thing to do because My Stack is My Backbone so need ( all L2 + L3 functionality).

Do you think that static Link agregation is a better solution if i won't change the stack functions ? that means i have to active LNB on unicast mode => what it means to the switch there's duplicate Mac address with the same IP in different ports. 

thanks a lot for your help!

[Fred_Mancen_1]

Yes, if you can change the server settings to unicast mode in the NLB feature, surely a manual link-aggregation group is the better choice. It's simple to configure and manage, and additionally increases the bandwidth of the connection.

HTH

[5500G-EI]

I will try it and give you feedback.

Thank you again :)