Forum Discussion
NimbostratusVLAN 0 from tcpdump
Hello Team,
I have seen VLAN 0 and I don't see anything in my configuration that I use vlan 0, however it doesn't show any match VS .I am running BIG-IP 11.5.1 Build 4.0.128 Hotfix HF4 .
from tcp dump using this command :
tcpdump -s0 -nvepi 0.0 dst host 10.1.0.55 and host 10.18.0.7 -s0
17:05:58.349957 12:ff:01:78:08:00 > 0x:xx:0a:0x:00:37, ethertype 802.1Q (0x8100), length 155: vlan 0, p 0, ethertype IPv4, (tos 0x0, ttl 128, id 6276, offset 0, flags [DF], proto: TCP (6), length: 130) 10.18.0.7.49829 > 10.1.0.55.https: P, cksum 0xb24d (correct), 5342:5432(90) ack 1 win 255 in slot1/tmm0 lis= 17:05:58.349968 12:ff:01:78:08:00 > 0x::0x:01:00:37, ethertype 802.1Q (0x8100), length 219: vlan 0, p 0, ethertype IPv4, (tos 0x0, ttl 128, id 6277, offset 0, flags [DF], proto: TCP (6), length: 194) 10.18.0.7.49829 > 10.1.0.55.https: P, cksum 0xfefd (correct), 5432:5586(154) ack 1 win 255 in slot1/tmm0 lis=
Do you know what is vlan 0 ?
Soda_Cup_148395Specifying interface 0.0 when running tcpdump captures traffic traversing all configured VLANs on the BIG-IP system. That is why you see VLAN 0.
Georgios_Fakis_So vlan 0 is nothing serious or nothing to check .
0.0 is from all interfaces , right ?
- Soda_Cup_148395
interface 0.0 catches all traffic between the switch board and the tmm, from what I understand but I cannot find a specific on this now. That is how it differs from '-i any'
nothing to worry about bro.