Re: [SunRay-Users] multicasting problems with sunray software and solaris

Brad Lackey - US-SW Desktop Product Lead Fri, 05 Sep 2008 11:28:25 -0700

You could switch to using broadcast for group messages instead...

see /etc/opt/SUNWut/auth.props

set enableMulticast = false

Brad

On Sep 5, 2008, at 10:25 AM, Thierry Delaitre wrote:

Hello,

I have some multicasting issues with the HP switch we are using. When one of the 2 sunray server in the failover load-balanced group is sending a multicast message, then the switch is dropping unicast packets to that host for 10/20 seconds L Disabling IGMP solves the problem but it is not really ideal.

When we are using wireshark or snoop on the solaris 10 05/08 (with SRS4) sunray server, we can observe that Solaris is duplicating the sunray multicast messages on the primary public interface!! Is this normal ? This strange behavior could be triggering a bug on our HP switch.

This is not happening on the ce1 dedicated sunray interconnect which is implemented as another vlan on the same switch.

bash-3.00# snoop -i ce0.snoop -p 82-83
82 0.00000 xxxx -> 224.101.101.101 UDP D=7009 S=7009 LEN=333
83 0.00053 xxxx -> 224.101.101.101 UDP D=7009 S=7009 LEN=333

In order to troubleshoot this, we have implemented a simple C program on solaris which creates a socket with sends multicast messages on the above sunray servers but we cannot replicate the problem. We can observe that the C program generates single multicast messages whereas solaris duplicates the sunray software multicast messages.

Any ideas ?

Thanks

Thierry.
_______________________________________________
SunRay-Users mailing list
[email protected]
http://www.filibeto.org/mailman/listinfo/sunray-users

Brad Lackey
Desktop Product Lead
US Software Practice
(720) 548-3339
[EMAIL PROTECTED]

BEGIN:VCARD
VERSION:3.0
N:Lackey;Brad;;;
FN:Brad Lackey
ORG:Sun Microsystems;
TITLE:US-SW Practice Desktop Product Lead
EMAIL;type=INTERNET;type=WORK;type=pref:[EMAIL PROTECTED]
TEL;type=WORK;type=pref:720-548-3339
TEL;type=CELL:303-875-8616
TEL;type=WORK;type=FAX:(720) 548-3339
item1.ADR;type=WORK;type=pref:;;421 Live Oak Walk;Bluffton;SC;29910;United States of America
item1.X-ABADR:us
X-ABUID:57E6612B-F276-4934-9C7A-CC683249EDB1\:ABPerson
END:VCARD

_______________________________________________
SunRay-Users mailing list
[email protected]
http://www.filibeto.org/mailman/listinfo/sunray-users

Re: [SunRay-Users] multicasting problems with sunray software and solaris

Reply via email to