User's Manual
Parameter Description
Allowed VLANs
on Mesh Link
List the VLAN ID numbers of VLANs allowed on the mesh link.
BC/MC Rate
Optimization
Broadcast/Multicast Rate Optimization dynamically selects the rate for sending
broadcast/multicast frames on any BSS. This feature determines the optimal rate for
sending broadcast and multicast frames based on the lowest of the unicast rates across
all associated clients.
When you enable the Multicast Rate Optimization feature, the controller scans the list of
all associated stations in that BSS and finds the lowest transmission rate as indicated by
the rate adaptation state for each station. If there are no associated stations in the BSS, it
selects the lowest configured rate as the transmission rate for broadcast and multicast
frames.
This feature is enabled by default. Multicast Rate Optimization applies to broadcast and
multicast frames only. 802.11 management frames are not affected by this feature and
are transmitted at the lowest configured rate. When enabled, this setting dynamically
adjusts the multicast rate to that of the slowest connected mesh child. Multicast frames
are not sent if there are no mesh children.
NOTE: This feature should only be enabled on a BSS where all associated stations are
sending or receiving unicast data. If there is no unicast data to or from a particular station,
then the rate adaptation state may not accurately reflect the current sustainable
transmission rate for that station. This could result in a higher packet error rate for
broadcast/multicast packets at that station. Configuring the Video Multicast Rate
Optimization parameter overrides the configuration of BC/MC Rate Optimization
parameter for VI-tagged multicast traffic. Multicast traffic that is not VI-tagged behaves
the same with BC/MC as before. If multicast rate is not set, all traffic behaves the same.
Default: Enabled.
Heartbeat
threshold
Indicates the maximum number of heartbeat messages that can be lost between
neighboring mesh nodes.
Default: 10 missed heartbeats.
Range: 1–255.
Maximum
Children
Indicates the maximum number of children a mesh node can accept.
Default: 64 children.
Range: 1–64
Maximum Hop
Count
Indicates the maximum hop count from the mesh portal.
Default: 8 hops.
Range: 1–32
Mesh Private
VLAN
A VLAN ID for control traffic between an remote mesh portal and mesh nodes. This VLAN
ID must not be used for user traffic.
Range: 0–4094. Default: 0 (disabled).
For further information on configuring a remote mesh portal, see Configuring Remote
Mesh Portals (RMPs) on page 567
Mesh
Survivability
This feature is currently not supported and should only be enabled under the supervision
of Dell support.
Metric
algorithm
This parameter specifies the algorithm used by a mesh node to select its parent. Use this
setting to optimize operation of the link metric algorithm.
Available options are:
l best-link-rssi: Selects the parent with the strongest RSSI, regardless of the number of
children a potential parent has.
l distributed-tree-rssi: selects the parent based on link-RSSI and node cost based on the
number of children. This option evenly distributes the mesh points over high quality
uplinks. Low quality uplinks are selected as a last resort.
Default: distributed-tree-rssi. It is recommended to use the default value.
Dell Networking W-Series ArubaOS 6.4.x | User Guide Secure Enterprise Mesh | 553