M1000e CMC iDRAC Packetloss

Magnus Ringdahl magnus.ringdahl at bolina.hsb.se
Mon Jun 14 15:34:04 CDT 2010

I wonder if there is someone else that has experienced packetloss when 
the port connecting the iDRAC for the blades have been trunked/tagged?
The CMC module responds as it should, but i get masive packetloss when i 
try to ping the iDRAC interfaces on my bladeservers.

I also recieve duplicate responses when i ping my iDRAC interfaces.

My network config:

                                      /          \
                               Switch1   Switch2
                                     \          /
                                     /           \
              (standby) CMC1       CMC2 (active)

Any ideas? Am I doing anything wrong?
Im using vlanid 15 for the management, and has the CMC ports tagged for 
that vlan.
I also have an ISL between switch1 and switch2 and vlan15 is tagged 
there aswell.. as on the uplinks to the router.

.143 is the iDRAC on BLADE#1
.142 is the CMC modules.

64 bytes from x.y.255.143: icmp_seq=1 ttl=64 time=0.451 ms
64 bytes from x.y.255.143: icmp_seq=1 ttl=64 time=0.487 ms (DUP!)
64 bytes from x.y.255.143: icmp_seq=2 ttl=64 time=0.382 ms
--- x.y.255.143 ping statistics ---
7 packets transmitted, 2 received, +1 duplicates, 71% packet loss, time 
rtt min/avg/max/mdev = 0.382/0.440/0.487/0.043 ms

64 bytes from x.y.255.142: icmp_seq=1 ttl=64 time=0.236 ms
64 bytes from x.y.255.142: icmp_seq=2 ttl=64 time=0.177 ms
64 bytes from x.y.255.142: icmp_seq=3 ttl=64 time=0.222 ms
--- x.y.255.142 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.177/0.211/0.236/0.030 ms

Kind Regards

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