R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide

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# Display route 4.4.4.4/32 on Router S to view the backup next hop information.
[RouterS] display ip routing-table 4.4.4.4 verbose
Routing Table : Public
Summary Count : 1
Destination: 4.4.4.4/32
Protocol: ISIS Process ID: 1
Preference: 10 Cost: 10
IpPrecedence: QosLcId:
NextHop: 13.13.13.2 Interface: gigabitethernet2/1/2
BkNextHop: 12.12.12.2 BkInterface: gigabitethernet2/1/1
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 Router D to view the backup next hop information.
[RouterD] 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: gigabitethernet2/1/2
BkNextHop: 24.24.24.2 BkInterface: gigabitethernet2/1/1
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 56, Router A, Router B, Router C, and Router D reside in the same IS-IS routing
domain.
Router A, Router B, and Router C belong to Area 10, and Router 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 Router C and Router D to prevent untrusted routes from entering the routing domain.