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isis route command to check if routes from Switch A to the loopback interface on Switch B and from
Switch B to the loopback interface on Switch A exist.
# When a master/slave switchover occurs on Switch S, display IS-IS neighbors and routes on
Switch A.
<SwitchA> display isis peer
Peer information for ISIS(1)
----------------------------
System Id: 0000.0000.0001
Interface: vlan100 Circuit Id: 0000.0000.0001.01
State: Up HoldTime: 25s Type: L1(L1L2) PRI: 64
System Id: 0000.0000.0001
Interface: vlan100 Circuit Id: 0000.0000.0001.01
State: Up HoldTime: 27s Type: L2(L1L2) PRI: 64
<SwitchA> display isis route
Route information for ISIS(1)
-----------------------------
ISIS(1) IPv4 Level-1 Forwarding Table
-------------------------------------
IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags
--------------------------------------------------------------------------
12.12.12.0/24 10 NULL vlan100 Direct D/L/-
22.22.22.22/32 10 NULL Loop0 Direct D/-/-
14.14.14.0/32 10 NULL vlan100 12.12.12.2 R/L/-
44.44.44.44/32 10 NULL vlan100 12.12.12.2 R/L/-
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
ISIS(1) IPv4 Level-2 Forwarding Table
-------------------------------------
IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags
--------------------------------------------------------------------------
12.12.12.0/24 10 NULL vlan100 Direct D/L/-
22.22.22.22/32 10 NULL Loop0 Direct D/-/-
14.14.14.0/32 10 NULL
44.44.44.44/32 10 NULL
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
# Display IS-IS neighbors and routes on Switch B.
<SwitchB> display isis peer
Peer information for ISIS(1)
----------------------------
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