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306 PowerConnect B-Series FCX Configuration Guide
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About port regions
9
• For information about configuring IP addresses, DNS resolver, DHCP assist, and other
IP-related parameters, refer to Chapter 26, “Configuring IP”.
• For information about the Syslog buffer and messages, refer to Chapter 41, “Using
Syslog”.
About port regions
This section describes port regions on PowerConnect switches.
PowerConnect B-Series FCX device port regions
The port region rules for PowerConnect B-Series FCX devices are as follows:
• For all platforms, a 24-port Gbps module has one port region. In addition, any 10 Gbps ports
on the device also belong to this single port region.
• For all platforms, the 48-port Gbps module has two port regions:
- Ports 1 - 24 belong to port region 0
- Ports 25 - 48 belong to port region 1
• For PowerConnect B-FCX648 devices with two 10 Gbps XFP ports, and a two 10 Gbps CX4
stacking ports:
- The two 10 Gbps XFP ports belong to port region 0 (along with ports 1 -24 )
- The two 10 Gbps CX4 stacking ports belong to port region 1 (along with ports 25 - 48)
• For PowerConnect B-FCX648 devices with four 10 Gbps SFP+ ports:
- 10 Gbps SFP+ ports 3 and 4 belong to port region 0 (along with ports 1 -24 )
- 10 Gbps SFP+ ports 1 and 2 ports belong to port region 1 (along with ports 25 - 48)
Enabling or disabling the Spanning Tree Protocol (STP)
STP (IEEE 802.1D bridge protocol) is supported on all Dell PowerConnect devices. STP detects and
eliminates logical loops in the network. STP also ensures that the least cost path is taken when
multiple paths exist between ports or VLANs. If the selected path fails, STP searches for and then
establishes an alternate path to prevent or limit retransmission of data.
NOTE
This section provides instructions for enabling and disabling STP. For configuration procedures and
more information about STP, refer to Chapter 8, “Configuring Spanning Tree Protocol (STP) Related
Features” in this guide.
STP must be enabled at the system level to allow assignment of this capability on the VLAN level.
On devices running Layer 2 code, STP is enabled by default. On devices running Layer 3 code, STP
is disabled by default.
To enable STP for all ports on a Dell PowerConnect device, enter the following command.
PowerConnect(config)#spanning tree
Syntax: [no] spanning-tree