H3C Technologies H3C SR8800 - Manual (Page 204)

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Configure neighbor relationship authentication between neighbors. Configure area authentication in
Area 10 to prevent untrusted routes from entering into the area. Configure routing domain authentication
on Router C and Router D to prevent untrusted routes from entering the routing domain.
Figure 69 IS-IS authentication configuration
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown)
2. Configure IS-IS basic functions:
# Configure Router A.
system-view
[RouterA] isis 1
[RouterA-isis-1] network-entity 10.0000.0000.0001.00
[RouterA-isis-1] is-level level-1
[RouterA-isis-1] quit
[RouterA] interface GigabitEthernet 1/1/1
[RouterA-GigabitEthernet1/1/1] isis enable 1
[RouterA-GigabitEthernet1/1/1] quit
# Configure Router B.
system-view
[RouterB] isis 1
[RouterB-isis-1] network-entity 10.0000.0000.0002.00
[RouterA-isis-1] is-level level-1
[RouterB-isis-1] quit
[RouterB] interface GigabitEthernet 1/1/1
[RouterB-GigabitEthernet1/1/1] isis enable 1
[RouterB-GigabitEthernet1/1/1] quit
# Configure Router C.
system-view
[RouterC] isis 1
[RouterC-isis-1] network-entity 10.0000.0000.0003.00
[RouterC-isis-1] quit
[RouterC] interface GigabitEthernet 1/1/1
[RouterC-GigabitEthernet1/1/1] isis enable 1
[RouterC-GigabitEthernet1/1/1] quit