Installation Guide

Table Of Contents
Task 2: Configuring IP and Ethernet interfaces
Attribute Meaning
VLAN Aging
Timeout
Specify how long the AP must keep dynamically learned VIDs. The
range of values is 5 to
1440
(minutes). The default value is
25
(minutes).
VIDs that you enter for the Management VID and VLAN
Membership parameters do not time out.
Management
VID
Enter the VID that the operator wishes to use to communicate with
the module manager. The range of values is 1 to 4095. The default
value is 1.
QinQ EtherType
Modules can be configured with 802.1ad Q-in-Q DVLAN (Double-
VLAN) tagging which is a way for an operator to put an 802.1Q VLAN
inside of an 802.1ad VLAN. A nested VLAN, which is the original
802.1Q tag and a new second 802.1ad tag, allows for bridging of
VLAN traffic across a network and segregates the broadcast domains
of 802.1Q VLANs. Q-in-Q can be used with PPPoE and/or NAT.
The 802.1ad standard defines the S-VLAN as the Service Provider
VLAN and the C-VLAN as the customer VLAN. The radio software
does 2 layer Q-in-Q whereby the C-VLAN is the 802.1Q tag and the S-
VLAN is the second layer Q tag as shown below:
Table 16 Q-in-Q Ethernet frame
Ethernet Header
S-VLAN
EthType 0x88a8
C-VLAN
EthType 0x8100
IP Data EthType 0x0800
The 802.1ad S-VLAN is the outer VLAN that is configurable on the
Configuration => VLAN web page of the AP. The Q-in-Q EtherType
parameter is configured with a default EtherType of 0x88a8 in
addition to four alternate EtherTypes that can be configured to aid in
interoperability with existing networks that use a different EtherType
than the default.
The C-VLAN is the inner VLAN tag, which is the same as 802.1Q. As a
top level concept, this operates on the outermost tag at any given
time, either “pushing” a tag on or “popping” a tag off. This means
packets will at most transition from an 802.1Q frame to an 801.ad
frame (with a tag “pushed” on) or an untagged 802.1 frame (with the
tag “popped” off. Similarly, for an 802.1ad frame, this can only
transition from an 802.1ad frame to an 802.1Q frame (with the tag
“popped” off) since the radio software only supports 2 levels of tags
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pmp-0957 (April 2015)