3Com 3CBLSG24 User Guide - Page 101

untagged member of VLAN1. If its untagged membership from another

Page 101 highlights

101 VLAN tagging provides a method of transferring VLAN information between VLAN groups. VLAN1is the default VLAN. All ports are untagged members of VLAN1 by default. If any port becomes an untagged member of a different VLAN, then the port is removed from untagged membership of VLAN1. For example: If port 24 is made an untagged member of VLAN 5, the port will no longer be a member of VLAN1. However, if the port is made an tagged member of VLAN5, it still remains untagged in VLAN1. A port can only be an untagged member of one VLAN. By default it is untagged member of VLAN1. If its untagged membership from another VLAN is removed, it will default to untagged membership in VLAN1. There is no restriction on tagged membership. A port can be a tagged member of any number of multiple VLANs.

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101
VLAN tagging provides a method of transferring VLAN information
between VLAN groups. VLAN1is the default VLAN. All ports are untagged
members of VLAN1 by default. If any port becomes an untagged member
of a different VLAN, then the port is removed from untagged
membership of VLAN1. For example: If port 24 is made an untagged
member of VLAN 5, the port will no longer be a member of VLAN1.
However, if the port is made an tagged member of VLAN5, it still remains
untagged in VLAN1.
A port can only be an untagged member of one VLAN. By default it is
untagged member of VLAN1. If its untagged membership from another
VLAN is removed, it will default to untagged membership in VLAN1.
There is no restriction on tagged membership. A port can be a tagged
member of any number of multiple VLANs.