Accept wide metrics: noneDell#To view IS-IS protocol statistics, use the show isis traffic command in EXEC Privilege mode.Dell#show isis trafficIS-IS: Level-1 Hellos (sent/rcvd) : 4272/1538IS-IS: Level-2 Hellos (sent/rcvd) : 4272/1538IS-IS: PTP Hellos (sent/rcvd) : 0/0IS-IS: Level-1 LSPs sourced (new/refresh) : 0/0IS-IS: Level-2 LSPs sourced (new/refresh) : 0/0IS-IS: Level-1 LSPs flooded (sent/rcvd) : 32/19IS-IS: Level-2 LSPs flooded (sent/rcvd) : 32/17IS-IS: Level-1 LSPs CSNPs (sent/rcvd) : 1538/0IS-IS: Level-2 LSPs CSNPs (sent/rcvd) : 1534/0IS-IS: Level-1 LSPs PSNPs (sent/rcvd) : 0/0IS-IS: Level-2 LSPs PSNPs (sent/rcvd) : 0/0IS-IS: Level-1 DR Elections : 2IS-IS: Level-2 DR Elections : 2IS-IS: Level-1 SPF Calculations : 29IS-IS: Level-2 SPF Calculations : 29IS-IS: LSP checksum errors received : 0IS-IS: LSP authentication failures : 0Dell#You can assign more NET addresses, but the System ID portion of the NET address must remain the same. Dell Networking OS supportsup to six area addresses.Some address considerations are:• In order to be neighbors, configure Level 1 routers with at least one common area address.• A Level 2 router becomes a neighbor with another Level 2 router regardless of the area address configured. However, if the areaaddresses are different, the link between the Level 2 routers is only at Level 2.Configuring Multi-Topology IS-IS (MT IS-IS)To configure multi-topology IS-IS (MT IS-IS), use the following commands.1 Enable multi-topology IS-IS for IPv6.ROUTER ISIS AF IPV6 modemulti-topology [transition]Enter the keyword transition to allow an IS-IS IPv6 user to continue to use single-topology mode while upgrading to multi-topology mode. After every router has been configured with the transition keyword, and all the routers are in MT IS-IS IPv6mode, you can remove the transition keyword on each router.NOTE: When you do not enable transition mode, you do not have IPv6 connectivity between routers operating in single-topology mode and routers operating in multi-topology mode.2 Exclude this router from other router’s SPF calculations.ROUTER ISIS AF IPV6 modeset-overload-bit3 Set the minimum interval between SPF calculations.ROUTER ISIS AF IPV6 modespf-interval [level-l | level-2 | interval] [initial_wait_interval [second_wait_interval]]Use this command for IPv6 route computation only when you enable multi-topology. If using single-topology mode, to apply to bothIPv4 and IPv6 route computations, use the spf-interval command in CONFIG ROUTER ISIS mode.486 Intermediate System to Intermediate System
