Operation Manual – MSTPH3C S3100 Series Ethernet Switches Chapter 1 MSTP Configuration1-55Note:z The VLAN-VPN tunnel function can be enabled on STP-enabled devices only.z To enable the VLAN-VPN tunnel function, make sure the links between operator’snetworks are trunk links.1.10 STP Maintenance Configuration1.10.1 IntroductionIn a large-scale network with MSTP enabled, there may be many MSTP instances, andso the status of a port may change frequently. In this case, maintenance personnel mayexpect that log/trap information is output to the log host when particular ports fail, sothat they can check the status changes of those ports through alarm information.1.10.2 Enabling Log/Trap Output for Ports of MSTP InstanceTable 1-46 Enable log/trap output for ports of MSTP instanceOperation Command DescriptionEnter system view system-view —Enable log/trap output forthe ports of a specifiedinstancestp [ instanceinstance-id ] portlogRequiredBy default, log/trap outputis disabled for the ports ofall instances.Enable log/trap output forthe ports of all instances stp portlog allRequiredBy default, log/trap outputis disabled for the ports ofall instances.1.10.3 Configuration Example# Enable log/trap output for the ports of instance 1. system-view[Sysname] stp instance 1 portlog# Enable log/trap output for the ports of all instances. system-view[Sysname] stp portlog all
