|A1:||This solution uses a System ID of 0000.1234.abcX, where X is a number that makes the router unique within the IS-IS domain. The System ID is six octets, which is required by Cisco IOS. The minimum NET length is eight octets, one of which is the SEL, so the area address is a one-octet number corresponding to the area number shown in Table 10.6. The configurations are:
interface Ethernet0 ip address 192.168.1.17 255.255.255.240 ip router isis!interface Ethernet1 ip address 192.168.1.50 255.255.255.240 ip router isis clns router isis!router isis net 00.0000.1234.abc1.00 is-type level-1
interface Ethernet0 ip address 192.168.1.33 255.255.255.240 ip router isis!interface Ethernet1 ip address 192.168.1.51 255.255.255.240 ip router isis ...