3750E switch coudnot ping a video conferencing system

[mestasew1]

I am working  on a cisco switch  model 3750 E on ios  ver 12.2 and installing a newly purchased VC device configured with static address under the vlan created for video. After setting  subset mask and GW  on the device , a ping to the device failed.  the vlan interface is up and the link to the device is configured as access to the vlan.  I was able to see the device mac  and  ip address on the mac , arp table. I have tried various settings on the link such as trunk and dynamic desirable which does not help. also verified there is no any acl blocking the traffic.

I sent broadcast traffic to the vlan from its DG , but no response from the device nor can I ping the switch from the device.

I have started working with the techs from the device provider. but I also want to present the  problem for Cisco community to see any suggestion or share  experience on  such situation.

Best regards

[Predrag Jovic]

If the switch has learned the mac and if address of a device , why the ping test fail ?

Try

interface FastEthernet0/0
 no mdix auto

[Georg Pauwen]

Hello,

I think the 3750E works with auto smartports and static smartport macros. Can you check if any of those are enabled on your switch ?

Check the link below for reference:

http://www.cisco.com/c/en/us/td/docs/switches/lan/auto_smartports/15-0_1_se/configuration/guide/asp_cg/configure.html

[Georg Pauwen]

You still haven't told us what model you have (e.g. V2IU E 4300T). Whatever model you have, have you tried to reset it to factory defaults ?

[mestasew1]

Georg,

I thank you for the smartports and and static smartport  macros  concept and the link. this is something I will look into. 

[mestasew1]

Georg,

After replacing the device with a new one from the vendor, I was able to get response and communicate with its vlan, made video calls. 

I have upgraded the software to the latest version before I return the device. I guess the problem was a faulty device maybe firmware.

Any ways the device is now working, thank you following through in attempting to resolve the issue I have been experiencing. 

[Georg Pauwen]

Hello,

with 'device' you mean the VC device and not the Cisco switch I assume...

Either way, glad you got the issue resolved !

[paul driver]

Hello

On the same port attach another host other than this VC and give it the same addressing.

If you can ping it then i would say the VC device is questionable

.

also used broadcast address 255.255.255.255 from the vlan interface 192.168.10.1

This isnt the broadcast address for that vlan, the broadcast address will be 192.168.10.255

Perfrom a ping to this and you should receive reply from all hosts active on that subnet providing nothing is negating it

res
Paul

[mestasew1]

paul,

Yes I have already ping the broadcast address and got responses from other devices with the exception of the device under discussion. 

I thank you noticing the wrong broadcast address stated in my previous reply which was used as an example address. 

I agree that the device could be faulty and I will start contacting the vendor.