14. Multiple Spanning Tree Protocol (MSTP)MN700004 Rev 01 154Table 14-5 MSTI Configuration CommandsC o m m a n d D e s c r i p t i o ninstance vlan Maps an MSTP instance to a VLAN.mstp priority Sets the MSTP priority.Mapping an MST Instance to a VLANThe instance vlan command, in Protocol MSTP Configuration mode, maps VLANs to anMST instance. The no form of this command unmaps all the VLANs that were mapped to anMST instance.BiNOS supports up to 16 instances. Each spanning tree instance is identified by an instanceID that ranges from 0 to 15. Instance 0 is mandatory and is always present. Instances 1through 15 are optional.When you map VLANs to an MST instance, the specified VLANs are added to or removedfrom the existing list.To specify a VLAN range, use a hyphen. For example, instance 1 vlan 1-63 maps VLANs 1through 63 to MST instance 1.To specify a list of VLANs, use a comma. The list must be entered in increasing order of IDnumbers. For example, instance 1 vlan 10, 20, 30 maps VLANs 10, 20, and 30 to MSTinstance 1.Command Syntaxdevice-name(cfg protocol mstp)#instance <instance-id> vlan VLAN-LISTdevice-name(cfg protocol mstp)#no instance <instance-id>1. The VLAN blocking is implemented by removing the port internally from that VLAN. Thiscan cause InErrors counter of such port to increase in cases of flooding or when portchanges its role due to topology changes.NOTES2. When port is member of tagged VLAN – the secure block port feature should be used.Argument Descriptioninstance-id The MST instance ID. The range is 1 to 15.VLAN-LIST The list of VLANs to add to the instance mapping. The range of values is <1-4094>.Setting the Bridge PriorityThe mstp priority command, in Protocol Configuration mode, sets the bridge priority for anMST instance. The no form of this command resets the switch priority for the MST instance.Command Syntaxdevice-name(cfg protocol)#mstp <instance-id> priority <priority>device-name(cfg protocol)#no mstp <instance-id> priority
