tcpdump mailing list archives
Cannot catch vlan frames with tcpdump
From: "Ian Brown" <ianbrn () gmail com>
Date: Sun, 27 Jan 2008 17:04:48 +0200
Hello, - I am using pktgen on Linux to generate vlan traffic. - I am sniffing with tcpdump on both sides (src and dest) and cannot catch VLAN traffic. - I tried sniffing in various ways , like by "tcpdump -f vlan" and "tcpdump -f vlan and net 192.168.0.0" and "tcpdump -f vlan and udp port 9" and many other ways . on both sides, (192.168.0.10 and the source machine , where pktgen runs) but I could not catch any VLAN frames. The script I am using for pktgen is this: function pgset() { local result echo $1 > $PGDEV result=`cat $PGDEV | fgrep "Result: OK:"` if [ "$result" = "" ]; then cat $PGDEV | fgrep Result: fi } function pg() { echo inject > $PGDEV cat $PGDEV } echo "Adding devices to run". PGDEV=/proc/net/pktgen/kpktgend_0 pgset "rem_device_all" pgset "add_device eth0" pgset "max_before_softirq 10" PGDEV=/proc/net/pktgen/eth0 pgset "clone_skb 10" pgset "min_pkt_size 64" pgset "max_pkt_size 64" pgset "dst 192.168.0.10" pgset "dst_mac 00:0D:60:9A:26:D2" pgset "count 10" pgset "vlan_id 45" #set VLAN ID 0-4095 # Next dev # Time to run pgset "start" echo "Done" Any ideas ? Does anyone have any exoerience with tcpdump and pktgen ? Regards, Ian - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
Current thread:
- Cannot catch vlan frames with tcpdump Ian Brown (Jan 27)
- Re: Cannot catch vlan frames with tcpdump Guy Harris (Jan 27)
- Re: Cannot catch vlan frames with tcpdump Ian Brown (Jan 27)
- Re: Cannot catch vlan frames with tcpdump Guy Harris (Jan 27)
- Re: Cannot catch vlan frames with tcpdump Ian Brown (Jan 27)
- Re: Cannot catch vlan frames with tcpdump Ian Brown (Jan 28)
- Re: Cannot catch vlan frames with tcpdump Ian Brown (Jan 27)
- Re: Cannot catch vlan frames with tcpdump Guy Harris (Jan 27)