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Re: [Linux-cluster] Multicasting problems



Thank you for your input. We are contacting Cisco to get their input on this, but we have to explore RH options if any as well. Would there be  a way to enable NIC (network device on the server) and make it IGMP aware somehow. In essence how can I make NIC's manage IGMP and PIM, is there a way? I know I can make a NIC in Linux become a router, but how do I make it IGMP and PIM aware on each node?

On Tue, Sep 8, 2009 at 5:38 PM, Steven Dake <sdake redhat com> wrote:
On Tue, 2009-09-08 at 17:34 -0500, Alan A wrote:
> It has come to the point where our cluster production configuration
> has halted due to the unexpected issues with multicasting on LAN/WAN.
>
> The problem is that the firewall enabled on the switch ports does not
> support multicasting, and between cluster nodes and the routers lays
> firewall.
>
> Nodes -> Switch with integrated Firewall devices -> Router
>
> We are aware of problems encountered with Cisco switches and are
> trying to clear some things. For instance in RHEL Knowledgebase
> article 5933 it states:
>
>
> The recommended method is to enable multicast routing for a given vlan
> so that the Catalyst will act as the IGMP querier. This consists of
> the following steps:
>
>
>
>      1. Enabling multicast on the switch globally
>
>      2. Choosing the vlan the cluster nodes are using
>
>      3. Turning on PIM routing for that subnet
>
>
> My Questions:
>
> Can we enable PIM routing on the Server NIC itself without using
> dedicated network device? Meaning IGMP multicast would be managed by
> the NIC's itself from each node, can the nodes awarnes function this
> way?
>
> Any suggestions on how to get around firewall issue without purchesing
> firewalls with routing tables?
>
> Cisco switch model is: switch 6509 running 12.2(18) SXF and IGMP v2.
>

I'm afraid only Cisco (and maybe some Cisco experts on this list) knows
the answers to your questions.  I suggest you contact your Cisco TAC for
advice on configuring their products.  They can help you achieve best
results.

Regards
-steve


>
>
> --
> Alan A.
> --
> Linux-cluster mailing list
> Linux-cluster redhat com
> https://www.redhat.com/mailman/listinfo/linux-cluster

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--
Alan A.

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