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Fortress ES-Series CLI Guide: Networking and Radio Configuration
99
the VLAN used for multicast traffic by subscribed FPMPs
(described in Section 3.2.2).
5 Enable VLANs on the Mesh Point.
When FastPath Mesh is used for bridging, the Mesh Point can
support up to eight VLANs, in
Enabled VLAN Mode. When
BridgingMode is
Off
, the Mesh Point can support up to 48
VLANs, in
Enabled VLAN Mode.
NOTE: Layer 2 dis-
covery protocols
must also be turned off
on any 3rd-party net-
work AP. Bridging loop
detection is incompati-
ble with VLAN transla-
tion, which is intended
to support an intention-
al loop in the L2 switch.
3.11.0.0.2 Translate VLAN Mode
You can set VLAN Mode to Translate only when the Mesh
Point’s global bridging
Mode is Off. Translate VLAN Mode is
incompatible with FastPath
Mesh (the default) and STP bridging
link management.
In
Translate VLAN Mode, pairs of encrypted-side and clear-
side VLAN IDs are used to map packets with matching VLAN
ID tags between encrypted and clear VLANs on the Mesh
Point. Each such VLAN pair therefore constitutes a
VLAN Map.
When a packet tagged with a VLAN ID that matches the
Encrypted Side VLAN ID of a VLAN Map is received on any
encrypted interface, the Mesh Point re-tags the packet with the
VLAN Map’s Clear Side VLAN ID as it passes the packet to any
clear interface. Likewise, when a packet is received on any
clear interface with a VLAN ID tag that matches the
Clear Side
VLAN ID of a configured VLAN Map, the packet is re-tagged
with the
Encrypted Side VLAN ID as it is passed to any
encrypted interface.
NOTE:
Any num-
ber of VLAN
trunks can be config-
ured on a Mesh Point in
Translate
VLAN
Mode
.
In this way VLAN ID-tagged packets can be passed in either
direction between VLANs on the Mesh Point’s clear and
encrypted interfaces as their VLAN ID tags are translated
accordingly. VLAN user-priority tags are preserved during
VLAN translation.
You can also configure a VLAN map (
vlanmap
), in which the
same VLAN ID is configured as the
Encrypted Side VLAN ID
and the
Clear Side VLAN ID, causing packets with matching
VLAN ID tags to pass between the Mesh Point’s encrypted and
clear interfaces without VLAN translation.
NOTE:
There is no
need for
VLAN
Map
s to be associated
with specific interfaces.
When the Mesh Point is in Translate VLAN Mode, an
incoming packet will be dropped, rather than forwarded from
clear to encrypted or encrypted to clear, if there is no VLAN
map with a matching VLAN ID configured for it.
VLAN IDs
1 through 4094 (inclusive) can be used in VLAN
maps. Note, however, that VLAN ID 1 is the default
Management VLAN ID. The VLAN IDs you configure in
translation maps must be present in the Mesh Point’s
Active
VLAN ID Table
(described in Section 3.11.1, below).
VLAN translation maps may not overlap: a given VLAN ID can
be used in only one VLAN map in the Mesh Point’s
vlanmap