H3C Technologies H3C S12500 Series Switches - Manual (Page 201)

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Protocol: ISIS Process ID: 1
Preference: 10 Cost: 10
IpPrecedence: QosLcId:
NextHop: 13.13.13.2 Interface: Vlan-interface200
BkNextHop: 12.12.12.2 BkInterface: Vlan-interface100
RelyNextHop: 0.0.0.0 Neighbor : 0.0.0.0
Tunnel ID: 0x0 Label: NULL
BKTunnel ID: 0x0 BKLabel: NULL
State: Active Adv Age: 00h01m27s
Tag: 0
# Display route 1.1.1.1/32 on Switch D to view the backup next hop information.
[SwitchD] display ip routing-table 1.1.1.1 verbose
Routing Table : Public
Summary Count : 1
Destination: 1.1.1.1/32
Protocol: ISIS Process ID: 1
Preference: 10 Cost: 10
IpPrecedence: QosLcId:
NextHop: 13.13.13.1 Interface: Vlan-interface200
BkNextHop: 24.24.24.2 BkInterface: Vlan-interface101
RelyNextHop: 0.0.0.0 Neighbor : 0.0.0.0
Tunnel ID: 0x0 Label: NULL
BKTunnel ID: 0x0 BKLabel: NULL
State: Active Adv Age: 00h01m27s
Tag: 0
IS-IS authentication configuration example
Network requirements
As shown in Figure 71 , Switch A, Switch B, Switch C, and Switch D reside in the same IS-IS routing
domain.
Switch A, Switch B, and Switch C belong to Area 10, and Switch D belongs to Area 20.
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 Switch C and Switch D to prevent untrusted routes from entering the routing domain.