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VLAN Configuration
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• Ingress Filtering – Determines how to process frames tagged for VLANs for
which the ingress port is not a member. (Default: Disabled)
- Ingress filtering only affects tagged frames.
- If ingress filtering is disabled and a port receives frames tagged for VLANs for
which it is not a member, these frames will be flooded to all other ports (except
for those VLANs explicitly forbidden on this port).
- If ingress filtering is enabled and a port receives frames tagged for VLANs for
which it is not a member, these frames will be discarded.
-
Ingress filtering does not affect VLAN independent BPDU frames, such as STP.
However, they do affect VLAN dependent BPDU frames, such as GMRP.
• GARP Join Timer* – The interval between transmitting requests/queries to
participate in a VLAN group. (Range: 20-1000 centiseconds; Default: 20)
• GARP Leave Timer* – The interval a port waits before leaving a VLAN group.
This time should be set to more than twice the join time. This ensures that after
a Leave or LeaveAll message has been issued, the applicants can rejoin before
the port actually leaves the group. (Range: 60-3000 centiseconds; Default: 60)
• GARP LeaveAll Timer* – The interval between sending out a LeaveAll query
message for VLAN group participants and the port leaving the group. This
interval should be considerably larger than the Leave Time to minimize the
amount of traffic generated by nodes rejoining the group.
(Range: 500-18000 centiseconds; Default: 1000)
• Mode – Indicates VLAN membership mode for an interface. (Default: 1Q Trunk)
- 1Q Trunk – Specifies a port as an end-point for a VLAN trunk. A trunk is a
direct link between two switches, so the port transmits tagged frames that
identify the source VLAN. However, note that frames belonging to the port’s
default VLAN (i.e., associated with the PVID) are sent untagged.
- Hybrid – Specifies a hybrid VLAN interface. The port may transmit tagged or
untagged frames.
• Trunk Member – Indicates if a port is a member of a trunk. To add a trunk to the
selected VLAN, use the last table on the VLAN Static Table page.
* Timer settings must follow this rule: 2 x (join timer) < leave timer < leaveAll timer