Foundry NetIron M2404C and M2404F Metro Access Switches
Configuring MSTP (Rev. 03)
Overview
© 2008 Foundry Networks, Inc
Page 36 of 70
Changing the Switch Compliance Mode
The
mstp cisco-compliant
command, in Interface Configuration mode, forces the port to work in
compliance with Cisco devices (Cisco-compliant mode) and not according to IEEE 802.1s (IEEE
802.1s-compliant mode). The
no
form of this command forces the port to IEEE 802.1s-compliant
mode.
It is recommended to always use Cisco-compliant mode for ports connected to Cisco devices as, at
present, these devices operate under pre-IEEE 802.1s standards.
By default, the switch is IEEE 802.1s-compliant.
Command Syntax
device-name
(config-if
UU/SS/PP
)#
mstp cisco-compliant
device-name
(config-if
UU/SS/PP
)#
no mstp cisco-compliant
Setting the BPDU Guard
The
mstp bpdu-rx
command, in Interface Configuration mode, prevents an MSTP edge-port from
receiving bridge protocol data units (BPDUs).
NOTE
The
mstp bpdu-rx
command will take effect only if the port is configured as an
MSTP edge-port by the
mstp edge-port
command in Interface Configuration mode.
NOTE
It is recommended to enable the
mstp bpdu-rx discard
command on the mstp edge
ports. This will prevent the topology from entering the unwanted BPDU packets
coming from the user ports.
By default, the value is
standard
which will indicate regular processing of received BPDUs as
defined by the 801.2s standard.
Command Syntax
device-name
(config-if
UU/SS/PP
)#
mstp bpdu-rx
{
discard
|
disable-port
|
standard
}
Argument Description
discard
If a BPDU is received on the port, the packet will be dropped and the port
will continue to operate as an edge-port.
disable-port
Disables the port when a BPDU is received on it.
standard
Invalidates operational status of an edge-port.
Example
The following example shows how to configure the device to disable port 1/1/3 if a BPDU is
received on it:
device-name
(config)#
interface 1/1/3
device-name
(config-if 1/1/3)#
mstp bpdu-rx disable-port