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Unable to ping by source interface

  • 17 November 2013
  • 2 replies

I'm having an issue using the -I (source_interface) option on the ping command on S-Series code version 8.11(.04.0005). I checked that the vlan.0.92 interface is up, but it is not allowing me to send the echo request.

Router(su)->ping -I vlan.0.92
PING ( 64 bytes of data.
ping: Could not send echo request
Router(su)->ping -I vlan.0.92 -S
PING ( from 64 bytes of data.
ping: Could not send echo request

Unfortunately, I cannot do the ping unless I'm sourcing it from VLAN 92 because of the restrictions on the remote device. Certainly I can get on a device contained in VLAN 92 and ping from there, but I think I should be able to do this from the router itself.

What am I missing?

2 replies

I have just tried it here on an S8 with It looks like if you use the -I option, you can only ping a remote host that is in the same subnet. However, using the -S option without the -I option seems to work.

Userlevel 2
Hi Chris, Did Patrick's suggestions work for you?