374To do… Use the command… RemarksStep 4 Display LSDB informationdisplay isis lsdb [ [ l1 | l2 | level-1 | level-2 ] | [ [ lsp-id lsp-id | lsp-name lspname | local ] | verbose]* ]* [ process-id | vpn-instance vpn-instance-name ]Available in any viewStep 5 Display IS-IS mesh groupinformationdisplay isis mesh-group [ process-id | vpn-instance vpn-instance-name]Available in any viewStep 6 Display the mappingtable between the hostname and system IDdisplay isis name-table [ process-id | vpn-instance vpn-instance-name]Available in any viewStep 7 Display IS-IS neighborinformationdisplay isis peer [ verbose ] [process-id | vpn-instance vpn-instance-name]Available in any viewStep 8 Display IPv6 IS-IS routinginformationdisplay isis route ipv6 [ [ level-1| level-2 ] | verbose ]* [ process-id]Available in any viewStep 9 Display SPF loginformationdisplay isis spf-log [ process-id |vpn-instance vpn-instance-name ] Available in any viewStep 10 Display the statistics ofthe IS-IS processdisplay isis statistics [ level-1 |level-2 | level-1-2 ] [ process-id |vpn-instance vpn-instance-name ]Available in any viewStep 11 Clear all IS-IS datastructure informationreset isis all [ process-id | vpn-instance vpn-instance-name ] Available in user viewStep 12 Clear the IS-IS datainformation of a neighborreset isis peer system-id [ process-id| vpn vpn-instance-name ] Available in user viewIPv6 IS-IS configuration exampleBy default, Ethernet, VLAN, and aggregate interfaces are down. Before configuring these interfaces, bringthem up using the undo shutdown command.Network requirementsAs shown in Figure 111, Switch A, Switch B, Switch C, and Switch D reside in the same AS, andall are enabled with IPv6.Switch A and Switch B are Level-1 switches; Switch D is a Level-2 switch; and Switch C is a Level-1-2 switch. Switch A, Switch B, and Switch C are in area 10, while Switch D is in area 20.