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Asanté IntraCore 36000 Series
Auto – The switch automatically determines if the interface is attached to a point-to-point link or to shared
media. (This is the default setting.)
Admin Edge Port (Fast Forwarding) – Enable this option if an interface is attached to a LAN segment that is
at the end of a bridged LAN or to an end node. Since end nodes cannot cause forwarding loops, they can
pass directly through to the spanning tree forwarding state. Specifying Edge Ports provides quicker
convergence for devices such as workstations or servers, retains the current forwarding database to reduce
the amount of frame flooding required to rebuild address tables during reconfiguration events, does not
cause the spanning tree to initiate reconfiguration when the interface changes state, and also overcomes
other STA-related timeout problems. The Edge Port should only be enabled for ports connected to an end-
node device. (Default: Disabled)
Migration – If at any time the switch detects STP BPDUs, including Configuration or Topology Change
Notification BPDUs, it will automatically set the selected interface to forced STP-compatible mode. You can
also use the Protocol Migration button to manually re-check the appropriate BPDU format (RSTP or STP-
compatible) to send on the selected interfaces. (Default: Disabled)
Configuring Switch Using the Web or CLI
Web
Click Spanning Tree – STA
, Port Configuration or Trunk Configuration. Modify the required attributes, then
click Apply.
CLI
This example sets STA attributes for port 7.
Console(config)#
interface ethernet 1/7
Console(config-if)#
no spanning-tree spanning-disabled
Console(config-if)#
spanning-tree port-priority 0
Console(config-if)#
spanning-tree cost 5
Console(config-if)#
spanning-tree link-type auto
Console(config-if)#
no spanning-tree edge-port
Console(config-if)#
3.3 Configuring Multiple Spanning Trees
MSTP generates a unique spanning tree for each instance. This provides multiple pathways across the
network, thereby balancing the traffic load, preventing wide-scale disruption when a bridge node in a single
instance fails, and allowing for faster convergence of a new topology for the failed instance.
By default, all VLANs are assigned to the Internal Spanning Tree (MST Instance 0) that connects all bridges
and LANs within the MST region. This switch supports up to 65 instances. You should try to group VLANs
that cover the same general area of your network. You must configure all bridges within the same MSTI