Техническая Спецификация для Trapeze Networks MX-MESH-U32
Mesh Applications
The added backhaul bandwidth now available
with 802.11n makes wireless meshing an effec-
tive enabler for a range of applications that
were previously cost prohibitive or impractical.
Among these are providing ubiquitous client
access in outdoor spaces between buildings at
schools, universities, hospitals and other large
campuses, as well as indoors in large uncarpeted
areas such as transportation terminals and
warehouses; enabling wireless video surveillance
and much more. The Trapeze mesh solution
allows a fan out of up to six mesh APs, and up
to three hops.
with 802.11n makes wireless meshing an effec-
tive enabler for a range of applications that
were previously cost prohibitive or impractical.
Among these are providing ubiquitous client
access in outdoor spaces between buildings at
schools, universities, hospitals and other large
campuses, as well as indoors in large uncarpeted
areas such as transportation terminals and
warehouses; enabling wireless video surveillance
and much more. The Trapeze mesh solution
allows a fan out of up to six mesh APs, and up
to three hops.
Self-Healing Mesh
In addition to leveraging the NonStop Wireless
capabilities available with the High Availability
module, Trapeze Mesh services have their own
self-healing, self tuning capabilities. In any
configuration, there may be multiple possible
mesh paths back to the Mesh Portal that is
attached to the wired network, so a Mesh AP
will normally select the one with the stron-
gest signal. However, if the mesh link becomes
obstructed, or the upstream AP goes out of
service, the Mesh AP will automatically find an
alternate path.
capabilities available with the High Availability
module, Trapeze Mesh services have their own
self-healing, self tuning capabilities. In any
configuration, there may be multiple possible
mesh paths back to the Mesh Portal that is
attached to the wired network, so a Mesh AP
will normally select the one with the stron-
gest signal. However, if the mesh link becomes
obstructed, or the upstream AP goes out of
service, the Mesh AP will automatically find an
alternate path.
On the RF side of the equation, the radios used
in a Mesh tune themselves automatically for
optimal channel, data rate and transmit power,
based on environmental conditions and in the
event that an adjacent AP goes down, leaving a
coverage hole.
in a Mesh tune themselves automatically for
optimal channel, data rate and transmit power,
based on environmental conditions and in the
event that an adjacent AP goes down, leaving a
coverage hole.
Bandwidth Preservation
In wireless bridging and mesh applications,
Wi-Fi rather than Gigabit Ethernet is the back-
haul media. For this reason bandwidth is a
scarce commodity that must managed.
Wi-Fi rather than Gigabit Ethernet is the back-
haul media. For this reason bandwidth is a
scarce commodity that must managed.
When bandwidth is limited it is important not
to squander it with unnecessary round trips,
irrelevant broadcast traffic and the like. The
Trapeze Smart Mobile architecture, implements
various techniques to suppress broadcast traffic
and optimize traffic flows.
to squander it with unnecessary round trips,
irrelevant broadcast traffic and the like. The
Trapeze Smart Mobile architecture, implements
various techniques to suppress broadcast traffic
and optimize traffic flows.
Local switching: Local switching allows access
points to do the forwarding instead of the
WLAN controller. In mesh applications this
ensures that all traffic that is destined for local
devices stays local and does not traverse bridge
or mesh links twice. This applies to local print-
ing, local file server, and peer-to-peer applica-
tions including voice.
points to do the forwarding instead of the
WLAN controller. In mesh applications this
ensures that all traffic that is destined for local
devices stays local and does not traverse bridge
or mesh links twice. This applies to local print-
ing, local file server, and peer-to-peer applica-
tions including voice.
Broadcast control: Broadcast suppression tech-
niques avoid unnecessary flooding of broadcast
traffic from the wired to the wireless network
thus protecting critical Mesh backhaul links.
Smart Mobile distributed forwarding features,
such as proxy ARP and stateful DHCP manage-
ment, provide advanced control over the type
and amount of broadcast traffic allowed onto
the Mesh. In addition to broadcast control mea-
sures, the Trapeze system provides distributed
IGMP for intelligent multicast control.
niques avoid unnecessary flooding of broadcast
traffic from the wired to the wireless network
thus protecting critical Mesh backhaul links.
Smart Mobile distributed forwarding features,
such as proxy ARP and stateful DHCP manage-
ment, provide advanced control over the type
and amount of broadcast traffic allowed onto
the Mesh. In addition to broadcast control mea-
sures, the Trapeze system provides distributed
IGMP for intelligent multicast control.
Stateful Firewall: Applications can be restricted
with the use of Access Control policies on a per
user or per SSID basis in order to prevent band-
width heavy applications being used in Mesh ap-
plications. Similarly, deep packet inspection also
makes it possible to distinguish different traffic
types such as SIP, so it can be given appropriate
QoS and bandwidth profiles automatically.
with the use of Access Control policies on a per
user or per SSID basis in order to prevent band-
width heavy applications being used in Mesh ap-
plications. Similarly, deep packet inspection also
makes it possible to distinguish different traffic
types such as SIP, so it can be given appropriate
QoS and bandwidth profiles automatically.
Efficient Mesh Path Setup: As clients associate
with an APs at the edge of the mesh, Station
Switching Records (SSRs) are propagated only to
the APs that are in the direct path between the
client and the Mesh Portal which is tethered to
the LAN. This is efficient because it prevents sta-
tion information going to APs that dont need it.
with an APs at the edge of the mesh, Station
Switching Records (SSRs) are propagated only to
the APs that are in the direct path between the
client and the Mesh Portal which is tethered to
the LAN. This is efficient because it prevents sta-
tion information going to APs that dont need it.
Identity Based Roaming
The Trapeze Mesh implementation retains all the
same identity based networking features that
you are familiar with. Service profiles defined
for tethered indoor access points, apply equally
on untethered outdoor access points, resulting
in totally seamless mobility for all users and
devices across the entire campus.
same identity based networking features that
you are familiar with. Service profiles defined
for tethered indoor access points, apply equally
on untethered outdoor access points, resulting
in totally seamless mobility for all users and
devices across the entire campus.
Unified Management System
Many vendor implementations of point-to-point
and point-to-multipoint bridging are completely
isolated from the rest of the network and
require seperate management altogether.
and point-to-multipoint bridging are completely
isolated from the rest of the network and
require seperate management altogether.
With Trapeze, a single management platform
called RingMaster does it all. You can manage
the network as a whole from a single console.
called RingMaster does it all. You can manage
the network as a whole from a single console.
Advanced RF Planning
Designing a mesh network and tuning the links
between mesh nodes and between bridge nodes
can be quite complicated. Since the most com-
mon application is outdoors, new obstacles and
environmental factors such as wind, rain and
snow can affect performance. Trapeze provides
advanced features within RingMaster to con-
figure bridge and mesh optimally in their actual
setting. For example on uneven ground, one
node may be on a hill and the other in a valley.
Lining up frenel zones for optimum perfor-
mance in a three dimensional space, is beyond
most IT managers’ realm of expertize. Yet, the
RF Planning tools in RingMaster makes this a
relatively easy task for a novice to perform.
between mesh nodes and between bridge nodes
can be quite complicated. Since the most com-
mon application is outdoors, new obstacles and
environmental factors such as wind, rain and
snow can affect performance. Trapeze provides
advanced features within RingMaster to con-
figure bridge and mesh optimally in their actual
setting. For example on uneven ground, one
node may be on a hill and the other in a valley.
Lining up frenel zones for optimum perfor-
mance in a three dimensional space, is beyond
most IT managers’ realm of expertize. Yet, the
RF Planning tools in RingMaster makes this a
relatively easy task for a novice to perform.
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