HP Cisco Nexus 5000 Cisco Nexus 5000 Series Switch CLI Software Configuration - Page 176

Configuration Parameters That Should Be Identical Information About vPCs • STP region configuration for Multiple Spanning Tree (MST) • Enable or disable state per VLAN • STP global settings: ◦ Bridge Assurance setting ◦ Port type setting-We recommend that you set all vPC interfaces as network ports ◦ Loop Guard settings • STP interface settings: ◦ Port type setting ◦ Loop Guard ◦ Root Guard • Maximum Transmission Unit (MTU) • Quality of Service global settings ◦ System QoS policy ◦ System Network-QoS policy ◦ System Input Queuing policy ◦ System Output Queuing policy • For the Fabric Extender vPC topology, all the interface level parameters mentioned above should be identically configured for host interface from both the switches. • Fabric Extender FEX number configured on an EtherChannel fabric interface; for the Fabric Extender vPC toplogy. If any of these parameters are not enabled or defined on either switch, the vPC consistency check ignores those parameters. Note To ensure that none of the vPC interfaces are in the suspend mode, enter the show vpc brief and show vpc consistency-parameters commands and check the syslog messages. Configuration Parameters That Should Be Identical When any of the following parameters are not configured identically on both vPC peer switches, a misconfiguration may cause undesirable behavior in the traffic flow: • MAC aging timers • Static MAC entries • VLAN interface-Each switch on the end of the vPC peer link must have a VLAN interface configured for the same VLAN on both ends and they must be in the same administrative and operational mode. Those VLANs configured on only one switch of the peer link do not pass traffic using the vPC or peer Cisco Nexus 5000 Series Switch CLI Software Configuration Guide 130 OL-16597-01