Ian Brown wrote:
Ben,
Thanks.
When I remove the "vlan_id" command from the script I do see PKTGEN
packets on UDP port 9.
These are captured by "tcpdump -f udp port 9"
(UDP port 9 is used by default by PKTGEN, I assume that most people
here probably know ).
The thing is that I do want to generate VLAN tagged traffic.
BTW, if I do configure a VLAN on eth0 , I do see VLAN packets (pavkets
with ethertype of VLAN), when sniffing with something like
"tethereal -R "vlan and host x.y.z.q
Any idea why with pktgen I cannot see VLAN traffic ?
It's not pktgen: hw-accel NICs strip the vlan tag on ingress, so you really
are generating vlan packets, it's just that the sniffer can't see the tags.
Sniff the VLAN device: Anything on it had the VLAN tag on the wire.
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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