Comware Based
cancel
Showing results for 
Search instead for 
Did you mean: 

How to implement Multicast and Servers using NLB

5500G-EI
Occasional Contributor

How to implement Multicast and Servers using NLB

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


 



 

4 REPLIES
Fred_Mancen_1
Super Advisor

Re: How to implement Multicast and Servers using NLB

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

0

21





false

false

false















MicrosoftInternetExplorer4













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
Occasional Contributor

Re: How to implement Multicast and Servers using NLB

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
Super Advisor

Re: How to implement Multicast and Servers using NLB

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
Occasional Contributor

Re: How to implement Multicast and Servers using NLB

I will try it and give you feedback.



Thank you again :)