Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 210

Usage Information Example (Address) The network device maintains static MAC address entries saved in the startup configuration file, and reboots and flushes dynamic entries. OS10# show mac address-table address 90:b1:1c:f4:a6:8f VlanId Mac Address Type Interface 1 90:b1:1c:f4:a6:8f dynamic ethernet1/1/3 Example (Aging Time) OS10# show mac address-table aging-time Global Mac-address-table aging time : 1800 Example (Count) OS10# show mac address-table count MAC Entries for all vlans : Dynamic Address Count : 5 Static Address (User-defined) Count : 0 Total MAC Addresses in Use: 5 Example (Dynamic) OS10# show mac address-table dynamic VlanId Mac Address Type 1 90:b1:1c:f4:a6:8f dynamic Interface ethernet1/1/3 Example (Ethernet) OS10# show mac address-table interface ethernet 1/1/3 VlanId Mac Address Type Interface 1 66:38:3a:62:31:3a dynamic ethernet1/1/3 Supported Releases 10.2.0E or later Multiple spanning-tree protocol MST is an RSTP-based spanning-tree variation that improves on per-VLAN RPVST+. You can configure MST instances and map multiple VLANs to one spanning-tree instance to reduce the total number of required instances. RPVST+ allows a spanning-tree instance for each VLAN. This 1:1 approach is not suitable if you have multiple VLANs - each spanning-tree instance costs bandwidth and processing resources. When you enable MST, all ports in Layer 2 mode participate in MST. Keep in mind that OS10 only supports one MST region. Load balancing can be achieved using the MST protocol. When three VLANs are mapped to two MSTIs, VLAN 100 traffic takes a different path than VLAN 200 and 300 traffic. Configuring MST is a four-step process: 1 Enable MST, if the current running STP version is not MST. 2 (Optional) Map the VLANs to different instances to achieve load balancing. 210 Layer 2