Specifications

Chapter 3: Layer 2 Features
Extreme Networks EAS 100-24t Switch Software Manual
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MST Configuration Identification
The following windows in the MST Configuration Identification section allow the user to configure a
MSTI instance on the Switch. These settings will uniquely identify a multiple spanning tree instance set
on the Switch. The Switch initially possesses one CIST or Common Internal Spanning Tree of which the
user may modify the parameters for but cannot change the MSTI ID for, and cannot be deleted.
Migrate Setting this parameter as Yes will set the ports to send out BPDU packets to
other bridges, requesting information on their STP setting If the Switch is
configured for RSTP, the port will be capable to migrate from 802.1D STP to
802.1w RSTP. Migration should be set as yes on ports connected to network
stations or segments that are capable of being upgraded to 802.1w RSTP on
all or some portion of the segment.
Edge Choosing the True parameter designates the port as an edge port. Edge ports
cannot create loops, however an edge port can lose edge port status if a
topology change creates a potential for a loop. An edge port normally should
not receive BPDU packets. If a BPDU packet is received, it automatically
loses edge port status. Setting the value to true under STP mode has no
effect. Choosing the Auto parameter will indicate that the port will be able to
automatically enable edge port status if needed.
P2P Choosing the True parameter indicates a point-to-point (P2P) shared link. P2P
ports are similar to edge ports, however they are restricted in that a P2P port
must operate in full-duplex. Like edge ports, P2P ports transition to a
forwarding state rapidly thus benefiting from RSTP. A P2P value of false
indicates that the port cannot have P2P status. Auto allows the port to have
P2P status whenever possible and operate as if the P2P status were true. If
the port cannot maintain this status, (for example if the port is forced to half-
duplex operation) the P2P status changes to operate as if the P2P value were
False. The default setting for this parameter is Auto.
Port STP Allows STP to be Enabled or Disabled for the ports.
Restricted Role Toggle between True and False to set the restricted role state of the packet.
The default value is False.
Restricted TCN Toggle between True and False to set the restricted TCN of the packet. The
default value is False.
Forward BPDU This field can be Enabled or Disabled. When Enabled, it allows the forwarding
of STP BPDU packets from other network devices. The default is Enabled.
Hello Time (1–2) The Hello Time can be set from 1 to 2 seconds. This is the interval between
two transmissions of BPDU packets sent by the Root Bridge to tell all other
switches that it is indeed the Root Bridge. The default value is 2.
Note: Hello Time is only configurable per port if DUT is running in MSTP
mode.
Parameter Description