Dell Converged Enhanced Ethernet Administrator’s Guide 2553-1002116-01Configuring Spanning Tree Protocol 32. Activate the protocol.switch(conf-lldp)#no disable3. Activate the TLV formats using the advertise command in Protocol LLDP Configuration Mode.switch(conf-lldp)#advertise dcbx-fcoe-app-tlvswitch(conf-lldp)#advertise dcbx-fcoe-logical-link-tlv4. Enter the copy command to save the running-config file to the startup-config file.switch(conf-lldp)#exitswitch(config)#endswitch#copy running-config startup-configConfiguring Spanning Tree ProtocolSpanning Tree Protocol is a mechanism to detect and avoid loops in Ethernet networks byestablishing a fixed path between all the switches in a LAN. The Dell FCoE hardware supports threespanning tree variations: Standard Spanning Tree (STP), Rapid Spanning Tree (RSTP), and MultipleInstance Spanning Tree (MSTP).It is best practice that an access layer switch does not become the root switch. Changing the bridgeor STP priority helps to ensure that this does not occur. The following example performed from theCEE CLI configures the switch for RSTP and sets the bridge priority to the highest value ensuring itwill not become the root switch in an existing LAN.To configure RSTP, perform the following steps in global configuration mode.1. Configure the switch for RSTP.switch(config)#protocol spanning-tree rstp2. Set the bridge priority to the highest value so it does not become the root switch in an existingLAN.switch(conf-rstp)#bridge-priority 614403. Enter the copy command to save the running-config file to the startup-config file.switch(conf-rstp)#exitswitch(config)#endswitch#copy running-config startup-configConfiguring VLAN membershipIEEE 802.1q Virtual LANs (VLANs) provide the capability to overlay the physical network withmultiple virtual networks. VLANs allow network traffic isolation into separate virtual networksreducing the size of administrative and broadcast domains.A VLAN contains end stations that have a common set of requirements which can be inindependent physical locations. You can group end stations in a VLAN even if they are not physicallylocated in the same LAN segment. VLANs are typically associated with IP subnets and all the endstations in a particular IP subnet belong to the same VLAN.In addition to creating a special VLAN for FCoE traffic, VLAN classifiers are applied to incomingEtherTypes for FCoE Initiation Protocol (FIP) and FCoE. VLAN classifiers are rules used todynamically classify Ethernet frames on an untagged interface to VLANs.
