06-02-2010 02:18 AM - edited 03-06-2019 11:23 AM
Hi,
There is a user that is ghosting an image from a server. When we check multicast of that session we see this:
XXXXX-1001#sh ip mroute act
Active IP Multicast Sources - sending >= 4 kbps
Group: 224.77.7.114, (?)
Source: 1XX.1XX.13.178 (?) (This is the Ghost server)
Rate: -164 pps/1939 kbps(1sec), 1939 kbps(last 10 secs), 0 kbps(life avg)
Negative numbers are drops. How can I troubleshoot this problem? Is there a step by step troubleshoot procedure?
This is configured on both vlans (server and client):
ip pim sparse-dense-mode
ip cgmp proxy
thx,
Marc
06-02-2010 02:51 AM
Hello Marc,
post the complete sh ip mroute active for this group and sh ip mroute
This can be a starting point.
Hope to help
Giuseppe
06-02-2010 06:24 AM
show ip mroute 224.77.69.35
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.77.69.35), 00:09:43/00:02:42, RP 137.120.84.1, flags: S
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan282, Forward/Sparse-Dense, 00:09:43/00:02:42
(1XX.1XX.1X.1XX, 224.77.69.35), 00:09:42/00:02:55, flags: PTA
Incoming interface: Vlan350, RPF nbr 0.0.0.0, RPF-MFD
Outgoing interface list: Null
__________________________________________________________________________________________________________
sh ip mroute active
Active IP Multicast Sources - sending >= 4 kbps
Group: 224.77.69.35, (?)
Source: 1XX.1XX.1X.1XX (?)
Rate: -3339 pps/39330 kbps(1sec), 39330 kbps(last 20 secs), 0 kbps(life avg)
06-02-2010 07:24 AM
Hello Marc,
>> (1XX.1XX.1X.1XX, 224.77.69.35), 00:09:42/00:02:55, flags: PTA
Incoming interface: Vlan350, RPF nbr 0.0.0.0, RPF-MFD
Outgoing interface list: Null
the (S,G) entry is pruned (P and oilist = null) T = SPT joined , A = source candidate for MSDP advertisement
at the moment of this show there was any interested receiver?
There is another multilayer switch that has won the assert for this source?
It is strange to see the (S,G) listed in sh ip mroute active but pruned unless another device is in charge to send the stream in the Vlan
may you post also
igmp group membership on device with
sh ip igmp groups
Hope to help
Giuseppe
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