07-29-2003 06:39 AM - edited 03-02-2019 09:12 AM
Hi,
we have a ghost multicast server. we have configured the multicast routing on the core 4506. but the response time became very high when the ghost is actived.
I want to know if I must actived igmp or configured some thing in catalyst 2950 SX to resolve problem?
thanks.
07-29-2003 06:45 AM
By default, IGMP snooping is globally enabled on the switch. If it is disabled for some reason, the following page should help you in configuring IGMP snooping
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12114ea1/2950scg/swigmp.htm
07-29-2003 07:22 AM
Yes, igmp snooping is enabled in catalyst 4506 and 2950 but not enabled in 2924 (or not supported) is this limitation affect the traffic and cause network problem when ghost is active?
07-29-2003 07:44 AM
If multicast traffic is flooded to all the ports, it can cause network issues.
XLs support CGMP. See if CGMP is disabled on your switch.
http://www.cisco.com/warp/public/473/167.html
http://www.cisco.com/warp/public/473/22.html
How many VLANs do you have? Are you seeing network problems only on XLs or other switches as well?
Check out the following thread as well
07-29-2003 08:02 AM
in our catalyst 2924
{( IOS (tm) C2900XL Software (C2900XL-H-M), Version 11.2(8)SA2, RELEASE SOFTWARE (fc1)Copyright (c) 1986-1998 by cisco Systems, Inc.}
,I don't find any indication to CGMP.
we have 9 vlan, and when the the ghost is active, the problem is on all switchs , the time of response became 1300ms some time in the core 4506 , and 500ms in other switchs.
07-29-2003 08:06 AM
in our catalyst 2924
{( IOS (tm) C2900XL Software (C2900XL-H-M), Version 11.2(8)SA2, RELEASE SOFTWARE (fc1)Copyright (c) 1986-1998 by cisco Systems, Inc.}
,I don't find any indication to CGMP.
we have 9 vlan, and when the the ghost is active, the problem is on all switchs , the time of response became 1300ms some time in the core 4506 , and 500ms in other switchs.
07-31-2003 04:40 AM
Hi,
this is my solution for Ghost using in one VLAN. But it could be modified to route to other VLANs, I think.
BTW, the latest Ghost version enables unicast communication which I think can be used for 95% of tasks.
Regards,
Milan
07-31-2003 03:35 AM
Hi
For sure the default gateway of the server is core 4506
Try to add a registry entry on the ghost (windows)
Mtu=576
MaxMtu =1460
Example to determine the MaxMtu
(Ping
Try this utility to configure MTU, you search the registry for Mtu, you add the second line MaxMtu
http://www.dslnuts.com/files/cmtu10017.zip
NB:on all interface of switch (core 4506 & 2950) must be
speed auto & duplex auto
& on the server & PC must be auto
(special if you use IBM )
If already is auto try to configure Mtu if not change to auto & make your test be for you add Mtu to the registry.
Regards
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide