Is-Is Frr Configuration Example - HPE FlexNetwork HSR6800 Configuration Manual

System Id: 0000.0000.0001
Interface: GE2/1/1
State: Up
System Id: 0000.0000.0001
Interface: GE2/1/1
State: Up
<RouterB> display isis route
Route information for ISIS(1)
IPV4 Destination
--------------------------------------------------------------------------
14.14.14.0/24
44.44.44.44/32
12.12.12.0/32
22.22.22.22/32
IPV4 Destination
--------------------------------------------------------------------------
14.14.14.0/24
44.44.44.44/32
12.12.12.0/32
22.22.22.22/32
The output shows that the neighbor relationships and routing information on Router A and
Router B have not changed, which means the neighbors cannot sense the switchover on
Router S.

IS-IS FRR configuration example

Network requirements
Router S, Router A, and Router D belong to the same IS-IS routing domain, as illustrated in
55. Configure IS-IS FRR so that when the link between Router S and Router D fails, traffic is
switched to Link B immediately.
HoldTime: 25s
HoldTime: 27s
ISIS(1) IPv4 Level-1 Forwarding Table
-------------------------------------
IntCost
10
10
10
10
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
ISIS(1) IPv4 Level-2 Forwarding Table
-------------------------------------
IntCost
10
10
10
10
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
Circuit Id: 0000.0000.0001.01
Type: L1(L1L2)
Circuit Id: 0000.0000.0001.01
Type: L2(L1L2)
-----------------------------
ExtCost ExitInterface
NULL GE2/1/1
NULL Loop0
NULL GE2/1/1
NULL GE2/1/1
ExtCost ExitInterface
NULL GE2/1/1
NULL Loop0
NULL
NULL
170
PRI: 64
PRI: 64
NextHop Flags
Direct D/L/-
Direct D/-/-
14.14.14.4 R/L/-
14.14.14.4 R/L/-
NextHop Flags
Direct D/L/-
Direct D/-/-
Figure