Developed by the Cisco
Link state routing protocol
Uses the Djkstra Algoritm
Not based on IP
Integrated IS-IS supports IP
Level-1 Routing: Within an area
Level-2 Routing: Between areas
İnterface tanımlarını yaptıktan sonra isis tanımlarını yapacağız.
R2(config)#router isis
R2(config-router)#is-type level-1
R2(config-router)#net ?
XX.XXXX. ... .XXX.XX Network entity title (NET)
R2(config-router)#net 11.1111.1111.1111.1111.00
//İnterface altında isis konfigurasyonunu aktif ediyoruz.
R2(config)#interface fastEthernet 0/0
R2(config-if)#ip router isis
R2(config-if)#no shut
R3(config)#router isis
R3(config-router)#is-type level-1-2
R3(config-router)#net 11.1111.2222.2222.2222.00
R3#conf t
R3(config)#interface fastEthernet 0/0
R3(config-if)#ip router isis
R3(config-if)#no shut
R4(config)#router isis
R4(config-router)#is-type level-1-2
R4(config-router)#net 22.2222.3333.3333.3333.00
R4#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R4(config)#interface fa0/0
R4(config-if)#ip router isis
R4(config-if)#interface fa4/0
R4(config-if)#ip router isis
R5(config)#router isis
R5(config-router)#is-type level-1
R5(config-router)#net 22.2222.4444.4444.4444.00
R5(config-router)#exit
R5(config)#interface fa2/0
R5(config-if)#ip router isis
R4#sh isis neighbors
System Id Type Interface IP Address State Holdtime Circuit Id
R5 L1 Fa4/0 203.0.113.5 UP 8 R5.01
