[Linux-cluster] Multicasting problems

[Alan A]

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 at 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 at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-cluster
>
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-- 
Alan A.
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