Codes:C- connected, S - static, R - RIP,
      B- BGP, IN - internal BGP, EX - external BGP,LO - 
Locally Originated,
      O- OSPF, IA - OSPF inter area, N1 - OSPF NSSA external 
type 1,
      N2- OSPF NSSA external type 2, E1 - OSPF external type 1,
      E2- OSPF external type 2, i - IS-IS, L1 - IS-IS level-1,
      L2- IS-IS level-2, IA - IS-IS inter area, * - candidate 
default,
      >- non-active route, + - summary route
Gateway of last resort is not set
    Destination   Gateway             Dist/Metric Last Change
    -----------   -------             ----------- -----------
R   2.1.0.0/24   via 2.1.4.1, Gi 4/43   120/2       3d0h
R   2.1.1.0/24   via 2.1.4.1, Gi 4/43   120/2       3d1h
R   2.1.2.0/24   via 2.1.4.1, Gi 4/43   120/1       3d0h
R   2.1.3.0/24   via 2.1.4.1, Gi 4/43   120/1       3d1h
C   2.1.4.0/24   Direct, Gi 4/43          0/0       3d1h
Related 
Commands
ip prefix-list – enters CONFIGURATION-IP PREFIX-LIST mode and configures a prefix list.
show ip prefix-list summary – displays a summary of the configured prefix lists.
show ip route summary
View a table summarizing the IP routes in the switch.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
show ip route summary
Command Modes
• EXEC
• EXEC Privilege
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.1.1.0
Introduced on the E-Series.
Usage 
Information
The following describes the show ip route summary shown in the Example below.
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