AirLive SNMP-24MGB - Manual (Page 59)

4. Web Management in SNMP-24MGB
AirLive SNMP-24MGB v2 User’s Manual 52
Port number.
VLAN Aware:
Based on IEEE 802.1Q VLAN tag to forward packet
Ingress Filtering:
Discard other VLAN group packets, only forward this port joined VLAN group
packets
Frame Type:
All: Forward all tagged and untagged packets
Tagged: Forward tagged packets only and discard untagged packets
PVID:
This PVID range will be 1-4095. Before you set a number x as PVID, you have to
create a Tag-based VLAN with VID x. For example, if port x receives an untagged
packet, the switch will apply the PVID (assume as VID y) of port x to tag this
packet, the packet then will be forwarded as the tagged packet with VID y.
Role:
This is an egress rule of the port. Here you can choose Access, Trunk or Hybrid.
Trunk means the outgoing packets must carry VLAN tag header. Access means
the outgoing packets carry no VLAN tag header. If packets have double VLAN
tags, one will be dropped and the other will still be left. As to Hybrid, it is similar to
Trunk, and both of them will tag-out. When the port is set to Hybrid, its packets will
be untagged out if the VID of the outgoing packets with tag is the same as the one
in the field of Untag VID of this port.
Untag VID:
Valid range is 1~4095. It works only when Role is set to Hybrid.
Double Tag:
Double-tag mode belongs to the tag-based mode, however, it would treat all
frames as the untagged ones, which means that tag with PVID will be added into
all packets. Then, these packets will be forwarded as Tag-based VLAN. So, the
incoming packets with tag will become the double-tag ones. Scroll to enable the
function and default is Disable.
4.4.5 Port Isolation
Function name:
Port Isolation
Function description:
Port Isolation provides for an apparatus and method to isolate ports on layer 2