Operation Manual – Routing ProtocolH3C S7500 Series Ethernet Switches Chapter 5 IS-IS Configuration5-14To do... Use the command... RemarksEnter system view system-view —Enter IS-IS view isis [ tag ] —Configure protocol priority preference [ value | clns |ip ]RequiredThe default priority ofIS-IS routes is 15.5.3.13 Configuring a Cost StyleIn IS-IS routing protocol, routing cost of a link can be expressed in one of the followingtwo modes:z Narrow: In this mode, routing cost ranges from 1 to 63.z Wide: In this mode, routing cost ranges from 1 to 224-1, namely, 1 to 16,777,215.You can specify to support either mode or both.Follow these steps to configure IS-IS route cost style:To do... Use the command... RemarksEnter system view system-view —Enter IS-IS view isis [ tag ] —Configure a coststylecost-style { narrow |wide | wide-compatible |{ compatible |narrow-compatible }[ relax-spf-limit ] }RequiredBy default, IS-IS receives/sendsonly the packets with routingcost expressed in the Narrowmode.5.3.14 Configuring Interface CostFollow these steps to configure interface cost:To do... Use the command... RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Configure interface cost isis cost value [ level-1 |level-2 ]RequiredThe default IS-IS interfacecost is 10.