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Does switch drop untagged frames on tagged only port?

Does switch drop untagged frames on tagged only port?

eyeV
New Contributor III
Hi everybody.

I have one question. It very important for me.

Let us suppose that I have tagged only port (I mean port where all vlans are tagged). What would switch do with received untagged frames?

sh ports 1 information detail
Port: 1:
VLAN cfg:
Name: Default, 802.1Q Tag = 1, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 1
Name: v4, 802.1Q Tag = 4, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 4
Name: v5, 802.1Q Tag = 5, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 5
Name: v6, 802.1Q Tag = 6, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 6
...
Protocol:
Trunking: Load sharing is not enabled.
Multi-switch LAG: MLAG port (MLAG Id: 1)And another case. I have tagged only port with VMAN vlan which untagged on this port. What would switch do with received untagged frames in this case?

sh ports 1 information detail
Port: 1:
VLAN cfg:
Name: Default, 802.1Q Tag = 1, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 1
Name: v2001, 802.1Q Tag = 2001, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 2001
Name: v2005, 802.1Q Tag = 2005, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 2005
Name: v2012, 802.1Q Tag = 2012, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 2012
Protocol:
Name: v502 Protocol: ANY Match all protocols.

sh vman v502
VMAN Interface with name v502 created by user
Admin State: Enabled Tagging: 802.1Q Tag 502
Description: s2-VMAN
Virtual router: VR-Default
IPv4 Forwarding: Disabled
IPv4 MC Forwarding: Disabled
IPv6 Forwarding: Disabled
IPv6 MC Forwarding: Disabled
IPv6: None
STPD: None
Protocol: Match all unfiltered protocols
Loopback: Disabled
NetLogin: Disabled
OpenFlow: Disabled
TRILL: Disabled
QosProfile: None configured
Egress Rate Limit Designated Port: None configured
Flood Rate Limit QosProfile: None configured
Ports: 23. (Number of active ports=10)
Tag: *25g
CEP: *1(PGS_C_16_1) : CVID 1100-1499,
CVID 2500-3999,
6 REPLIES 6

eyeV
New Contributor III
Thanks!

simon_bingham
New Contributor II
A normal tagged port, will drop untagged frames if there no untagged vlans assigned.

GTM-P2G8KFN