181
-----------------------------
IPv4 Destination IntCost ExtCost ExitInterface NextHop Flags
-------------------------------------------------------------------------------
10.1.1.0/24 10 NULL VLAN100 Direct D/L/-
10.1.2.0/24 10 NULL VLAN200 Direct D/L/-
192.168.0.0/24 10 NULL VLAN300 Direct D/L/-
Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set
Level-2 IPv4 Forwarding Table
-----------------------------
IPv4 Destination IntCost ExtCost ExitInterface NextHop Flags
-------------------------------------------------------------------------------
10.1.1.0/24 10 NULL D/L/-
10.1.2.0/24 10 NULL D/L/-
192.168.0.0/24 10 NULL D/L/-
10.1.4.0/24 20 NULL VLAN300 192.168.0.2 R/L/-
10.1.5.0/24 10 0 VLAN300 192.168.0.2 R/L/-
10.1.6.0/24 10 0 VLAN300 192.168.0.2 R/L/-
Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set
IS-IS authentication configuration example
Network requirements
As shown in Figure 46, Switch A, Switch B, Switch C, and Switch D reside in the same IS-IS routing
domain. Run IS-IS among them.
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.
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