Trunk Settings - Dell PowerConnect 5212 System User's Manual

Console(config-if)#switchport acceptable-frame-types tagged
Console(config-if)#switchport ingress-filtering
Console(config-if)#

Trunk Settings

On the Trunk Settings page, you can specify the default port VLAN ID (PVID) for ports that are configured as trunk members. When an untagged packet
enters the switch, it is, by default, tagged with the ID specified by the port's PVID.
For each trunk listed in the Trunk column, the following options are available:
PVID — Specifies the VLAN ID assigned to untagged frames received on the trunk. (Default: 1)
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NOTICE: If a trunk is not a member of VLAN 1 and you assign its PVID to this VLAN, the trunk will automatically be added to VLAN 1 as an untagged
member. For all other VLANs, a trunk must first be configured as an untagged member before you can assign its PVID to that group.
Acceptable Frame Type — Sets the trunk to accept all frame types, including VLAN tagged or untagged frames, or only tagged frames. When set to
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receive all frame types, any received frames that are untagged are assigned to the default VLAN. (Options: ALL, Tagged; Default: ALL)
Ingress Filtering — If ingress filtering is enabled, incoming frames for VLANs which do not include this trunk in their member set will be discarded at the
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ingress port. (Default: Disabled)
Note the following points about ingress filtering:
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Ingress filtering only affects tagged frames.
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If ingress filtering is disabled, the trunk will accept any VLAN-tagged frame if the tag matches a VLAN known to the switch (except for those
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VLANs explicitly forbidden on this trunk).
If ingress filtering is enabled, the trunk will discard incoming frames tagged for VLANs which do not include this ingress port in their member set.
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Ingress filtering does not affect VLAN independent BPDU frames, such as GVRP or STP. However, they do affect VLAN dependent BPDU frames,
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such as GMRP.
GVRP Status — Enables/disables GVRP for the trunk. GVRP defines a way for switches to exchange VLAN information to automatically register VLAN
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members on ports across the network. GVRP must be globally enabled for the switch before you can individually enable GVRP for a specific trunk. For
more information, see "GVRP." (Default: Disabled)
GARP Join Timer — Specifies the interval (in centiseconds) between transmitting requests/queries to participate in a VLAN group. (The range is 20 to
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1000 centiseconds.)
GARP Leave Timer — Specifies the interval (in centiseconds) that a trunk waits before leaving a VLAN group. GARP Leave Timer should be set to more
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than twice the join time. This interval ensures that after a Leave or LeaveAll message has been issued, the applicants can rejoin before the trunk
actually leaves the group. (The range is 60 to 3000 centiseconds.)
GARP LeaveAll Timer —Specifies the interval (in centiseconds) between when a LeaveAll query message for VLAN group participants is sent and when
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the trunk leaves the group. This interval should be considerably larger than the Leave Time to minimize the amount of traffic generated by nodes
rejoining the group. (The range is 500 to 18000 centiseconds.)
Mode – Indicates the VLAN membership mode for a trunk.
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(Default: Hybrid)
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
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that identify the source VLAN.
Hybrid – Specifies a hybrid VLAN interface. The trunk may transmit tagged or untagged frames.
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NOTICE: If Mode is set to 1Q Trunk, frames belonging to the trunk's default VLAN (i.e., associated with the PVID) are sent untagged, but all other
frames are tagged with the assigned VLAN ID.
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