Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 990

30 a0:00:a1:00:00:07 Dynamic (N) Po 11 Active 30 a0:00:a1:00:00:08 Dynamic (N) Po 11 Active 30 a0:00:a1:00:00:09 Dynamic (N) Po 11 Active 30 a0:00:a1:00:00:0a Dynamic (N) Po 11 Active 30 a0:00:a1:00:00:0b Dynamic (N) Po 11 Active 30 a0:00:a1:00:00:0c Dynamic Po 11 Active VLT-10-PEER-2#show vlt statistics mac VLT MAC Statistics L2 Info Pkts sent:0, L2 Mac-sync Pkts Sent:7 L2 Info Pkts Rcvd:0, L2 Mac-sync Pkts Rcvd:9 L2 Reg Request sent:0 L2 Reg Request rcvd:0 L2 Reg Response sent:0 L2 Reg Response rcvd:0 Note that the MAC address synchronized by a VLT peer is differentiated with an (N) flag in the example output. Interspersed VLANs In Dell EMC Networking OS, the same VLAN across many racks can be extended by configuring layer-3 VLANs across the VLT nodes and the ToR switches. Spanning the VLANs in an eVLT architecture could interconnect and aggregate multiple racks with the same VLAN. With routed VLT, you can configure a VLAN as layer 3 in a VLT domain and as layer 2 VLAN in all other VLT domains. By configuring a VLAN as layer 3 in a VLT domain and as layer 2 VLAN in all other VLT domains, you can confine the ARP entries to one particular VLT domain. At the core/aggregation layer VLT domain, you can configure common layer 3 VLANs for inter VLAN routing within the VLT domain. VLT on Core Switches Uplinks from servers to the access layer and from access layer to the aggregation layer are bundled in LAG groups with end-to-end Layer 2 multipathing. This set up requires "horizontal" stacking at the access layer and VLT at the aggregation layer such that all the uplinks from servers to access and access to aggregation are in Active-Active Load Sharing mode. This example provides the highest form of resiliency, scaling, and load balancing in data center switching networks. The following example shows stacking at the access, VLT in aggregation, and Layer 3 at the core. 990 Virtual Link Trunking (VLT)