Multiple Area Is-Is Configuration - Zte ZXR10 5900E Series User Manual

ZXR10 5900E Series User Manual (IPv4 Volume)

Multiple Area IS-IS Configuration

If a network is large, then divide IS-IS network into multiple areas.
Routers in a geographic area or of similar functions can be put into
one area. This reduces the demand on memory. Routers in an area
only need to maintain a small link state database. This is shown
inFigure 12.
F 12 MULTIPLE AREA IS-IS CONFIGURATION
IGURE
R1 is in Area 1. R2, R3, and R4 are in Area 0. R5 and R6 are in
Area 2. Segments in Area 1 are aggregated on R1. The default
route is redistributed to IS-IS on R6.
R1 configuration:
ZXR10_R1(config)#router isis
ZXR10_R1(config-router)#area 01
ZXR10_R1(config-router)#system-id 00D0.D0C7.53E0
ZXR10_R1(config-router)#is-type LEVEL-1-2
ZXR10_R1(config-router)#exit
ZXR10_R1(config)#interface vlan4
ZXR10_R1(config-if-vlan4)#ip address 192.168.15.1 255.255.255.0
ZXR10_R1(config-if-vlan4)#ip router isis
ZXR10_R1(config-if-vlan4)#isis circuit-type LEVEL-2
ZXR10_R1(config-if-vlan4)#exit
ZXR10_R1(config)#interface vlan6
ZXR10_R1(config-if-vlan6)#ip address 192.168.100.1 255.255.255.0
ZXR10_R1(config-if-vlan6)#ip router isis
ZXR10_R1(config-if-vlan6)#isis circuit-type LEVEL-1
ZXR10_R1(config-if-vlan6)#exit
ZXR10_R1(config)#interface vlan7
ZXR10_R1(config-if-vlan7)#ip address 192.168.101.1 255.255.255.0
ZXR10_R1(config-if-vlan7)#ip router isis
ZXR10_R1(config-if-vlan7)#isis circuit-type LEVEL-1
ZXR10_R1(config-if-vlan7)#exit
ZXR10_R1(config)#interface vlan8
ZXR10_R1(config-if-vlan8)#ip address 192.168.102.1 255.255.255.0
ZXR10_R1(config-if-vlan8)#ip router isis
ZXR10_R1(config-if-vlan8)#isis circuit-type LEVEL-1
ZXR10_R1(config-if-vlan8)#exit
ZXR10_R1(config)#router isis
ZXR10_R1(config-router)#summary-address 192.168.100.0 255.255.252.0 metric 10
R2 configuration:
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