Dell PowerConnect B-FCXs Configuration Manual page 302

8
Configuring STP related features
Set the admin-pt2pt-mac to enabled or disabled. If set to enabled, then a port is connected to
another port through a point-to-point link. The point-to-point link increases the speed of
convergence. This parameter, however, does not auto-detect whether or not the link is a physical
point-to-point link.
The force-migration-check parameter forces the specified port to sent one RST BPDU. If only STP
BPDUs are received in response to the sent RST BPDU, then the port will go return to sending STP
BPDUs.
Example
Suppose you want to enable 802.1W on a system with no active port-based VLANs and change the
hello-time from the default value of 2 to 8 seconds. Additionally, suppose you want to change the
path and priority costs for port 5 only. To do so, enter the following commands.
PowerConnect(config)#spanning-tree 802-1w hello-time 8
PowerConnect(config)#spanning-tree 802-1w ethernet 5 path-cost 15 priority 64
Displaying information about 802-1W
To display a summary of 802-1W, use the following command.
PowerConnect#show 802-1w
--- VLAN 1 [ STP Instance owned by VLAN 1 ] ----------------------------
VLAN 1 BPDU cam_index is 2 and the IGC and DMA master Are(HEX) 0 1 2 3
Bridge IEEE 802.1W Parameters:
Bridge
Identifier
hex
800000e080541700
RootBridge
Identifier
hex
800000e0804c9c00
Port IEEE 802.1W Parameters:
Port
Num
1
2
3
4
Syntax: show 802-1w [vlan <vlan-id>]
The vlan <vlan-id> parameter displays 802.1W information for the specified port-based VLAN.
The show 802.1w command shows the information listed in
TABLE 53
This field...
VLAN ID
260
Bridge Bridge Bridge Force
MaxAge Hello
sec sec
20 2
RootPath
Cost
200000
<--- Config Params -->|<-------------- Current state ----------------->
Pri PortPath P2P Edge Role
Cost Mac Port
128 200000 F F
128 200000 F F
128 200000 F F
128 200000 F F
CLI display of 802.1W summary
tx
FwdDly Version Hold
sec cnt
15 Default 3
DesignatedBri- Root
dge Identifier Port
hex
800000e0804c9c00 1
State
ROOT FORWARDING 0
DESIGNATED FORWARDING 200000
DESIGNATED FORWARDING 200000
BACKUP DISCARDING 200000
Displays...
The port-based VLAN that owns the STP instance. VLAN 1 is the default
VLAN. If you have not configured port-based VLANs on this device, all
802.1W information is for VLAN 1.
PowerConnect B-Series FCX Configuration Guide
Max Fwd Hel
Age Dly lo
sec sec sec
20 15 2
Designa- Designated
ted cost bridge
800000e0804c9c00
800000e080541700
800000e080541700
800000e080541700
Table 53.
53-1002266-01