Re: [FW-1] Cluster XL FP3 - Mulicast or Broadcast?

[Leonardo Boulton <lboulton@FW1-NOSPAMCYBERTECHPROJECTS.COM>]

Thank you very much.
I have been looking for the Muticast MAC Address to add it statically
like you suggested, but haven't been able to find it.
Where can I get it? (I tried a Sniffer, and didn't help that much).

thanks again,

LB

On Wed, 2003-02-19 at 05:30, Sylvain Defix wrote:
> ClusterXL works by mapping an unicast IP address (Cluster IP address) to a
> multicast IP address.
>
> As it's not exactly RFC like, Cisco switch and router seem to have problem
> with this.
>
> Check in the ARP table of the next hop router if you've got an entry
> associating the IP address of the cluster with the MAC multicast address. If
> not, add one static entry.
>
> Check in the CAM table of the switch if you could see the virtual multicast
> MAC addres. If not, add it statically on the interfaces on wich you've
> plugged the gateway.
>
> This should help solving the problem.
>
> Additionnaly, on complex LAN architecture, you could put all this in a
> seperate VLAN. We have tryed also to disable IGMP Snooping, on the switch.
> The purpose of this test was that the switch handle the multicast traffic as
> broadcast. We got 2 Cico in HSRP mode, and what we see is that it don't work
> too. The packets goes from one cisco to the other (real IP, not HSRP IP).
>
> Sylvain
>
> -----Original Message-----
> From: Leonardo Boulton [mailto:lboulton@CYBERTECHPROJECTS.COM]
> Sent: mercredi 19 fÃvrier 2003 01:54
> To: FW-1-MAILINGLIST@beethoven.us.checkpoint.com
> Subject: [FW-1] Cluster XL FP3 - Mulicast or Broadcast?
>
>
> Hi Guru lads,
>
> I have a problem with cluster XL and I'm sure you are going to help me on
> this.
> I have a cluster XL Load Sharing Configuration (just upgraded from FP2 to
> FP3) on two Solaris 8 boxes. Previously, they were synchronizing through the
> administration network that is connected to a Cisco 5500 switch. After the
> upgrade, I saw that both modules couldn't synchronize anymore, so I tested
> using a Hub instead of the 5500 switch. It worked!.
>
> I suspected that, because I read somewhere (or I dreamed about it) that
> state synchronization used to be through Boradcasts, but now it is through
> Multicasts. Is that right?. What do I have to do for it to work with the
> switch?.
>
> Thanks for your help and comments,
>
> cheers,
>
> LB
>
--
********************************************
Leonardo Boulton
Security Engineer

Cybertech Projects
lboulton@cybertechprojects.com
GnuPG pub Key at: http://www.keyserver.net
tlf:Caracas, Venezuela
********************************************

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