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ARP packets tagged on an access port

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Hi, all,

I thought I understand what an access port is, i.e. ethernet frames exchanged on an access port is untagged, but monitor traffic clearly shows the frame is actually tagged, how did this work at all?

 

ex-4300>show configuration interfaces ge-0/0/1

unit 0 {
family ethernet-switching {
interface-mode access;
vlan {
members VLAN-401;
}

 

ex-4300> show configuration vlans VLAN-401

vlan-id 401

l3-interface irb.401

ex-4300> show configuration interface irb.401

family inet {

 address 169.254.105.5/30

}

ex-4300> monitor traffic interface ge-0/0/1 extensive

b8:c2:53:a1:7a:21 > Broadcast, ethertype 802.1Q (0x8100), length 46: vlan 401, p 0, ethertype ARP, arp who-has 169.254.105.6 tell 169.254.105.5

28:6f:7f:0e:ed:c1 > b8:c2:53:a1:7a:21, ethertype 802.1Q (0x8100), length 64: vlan 401, p 0, ethertype ARP, arp reply 169.254.105.6 is-at 28:6f:7f:0e:ed:c1

b8:c2:53:a1:7a:21 > 28:6f:7f:0e:ed:c1, ethertype 802.1Q (0x8100), length 102: vlan 401, p 0, ethertype IPv4, (tos 0x0, ttl 64, id 65000, offset 0, flags [none], proto: ICMP (1), length: 84) 169.254.105.5 > 169.254.105.6: ICMP echo request, id 14140, seq 0, length 64

PFE proto 2 (ipv4): (tos 0x0, ttl 255, id 65000, offset 0, flags [none], proto: ICMP (1), length: 84) 169.254.105.6 > 169.254.105.5: ICMP echo reply, id 14140, seq 0, length 64

 

 

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