Connectivity Guide

spanning-tree rstp
Sets the priority value for RSTP.
Syntax
spanning-tree rspt priority priority value
Parameters priority priority value — Enter a bridge-priority value in increments of 4096, from 0 to 61440. Valid
priority values are: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248,
57344, and 61440. All other values are rejected.
Default Not congured
Command Mode CONFIGURATION
Usage Information RSTP determines the root bridge but you can assign one bridge a lower priority to increase the probability of it
being the root bridge. A lower priority value increases the probability of the bridge becoming a root bridge.
Example
OS10(config)# spanning-tree rstp priority 200
Supported Releases 10.2.0E or later
Virtual LANs
VLANs segment a single at L2 broadcast domain into multiple logical L2 networks. Each VLAN is uniquely identied by a VLAN ID or tag
consisting of 12 bits in the Ethernet frame. VLAN IDs range from 1 to 4093 and provide a total of 4093 logical networks.
You can assign ports on a single physical device to one or more VLANs creating multiple logical instances on a single physical device. The
virtual logical switches spanning across dierent physical devices emulate multiple logically segmented L2 networks on a single physical
network.
Each VLAN has its own broadcast domain. The unicast, multicast, and broadcast network trac from ports that belong to a VLAN
forwards or oods to ports in the same VLAN only. Trac between VLANs routes from one VLAN to another. You can also assign each
VLAN an IP address to group all the ports within a single IP subnet.
Segment a L2 network using VLANs to:
• Minimize broadcast and multicast trac in the L2 network
• Increase security by isolating ports into dierent VLANs
• Ease network management
Default VLAN
All interface ports are administratively up in L2 mode and are automatically placed in the default VLAN as untagged interfaces.
When you assign a port to a non-default VLAN in Trunk mode, the interface remains an untagged member of the default VLAN and a
tagged member of the new VLAN. When you assign a port to a non-default VLAN in Access mode, it removes from the default VLAN and
is assigned to the new VLAN as an untagged member of the new VLAN.
• VLAN 1 is the default VLAN.
• You cannot delete the default VLAN. However, you can change the default VLAN ID number using the default vlan-id command.
Use the show vlan command to verify that the interface is part of the default VLAN (VLAN 1).
Default VLAN conguration
OS10# show vlan
Layer 2
263