Examples
The following is
sample output from the
show
ip
route command when an IP address is not specified:
Device# show ip route
Codes: R - RIP derived, O - OSPF derived,
C - connected, S - static, B - BGP derived,
* - candidate default route, IA - OSPF inter area route,
i - IS-IS derived, ia - IS-IS, U - per-user static route,
o - on-demand routing, M - mobile, P - periodic downloaded static route,
D - EIGRP, EX - EIGRP external, E1 - OSPF external type 1 route,
E2 - OSPF external type 2 route, N1 - OSPF NSSA external type 1 route,
N2 - OSPF NSSA external type 2 route
Gateway of last resort is 10.119.254.240 to network 10.140.0.0
O E2 10.110.0.0 [160/5] via 10.119.254.6, 0:01:00, Ethernet2
E 10.67.10.0 [200/128] via 10.119.254.244, 0:02:22, Ethernet2
O E2 10.68.132.0 [160/5] via 10.119.254.6, 0:00:59, Ethernet2
O E2 10.130.0.0 [160/5] via 10.119.254.6, 0:00:59, Ethernet2
E 10.128.0.0 [200/128] via 10.119.254.244, 0:02:22, Ethernet2
E 10.129.0.0 [200/129] via 10.119.254.240, 0:02:22, Ethernet2
E 10.65.129.0 [200/128] via 10.119.254.244, 0:02:22, Ethernet2
E 10.10.0.0 [200/128] via 10.119.254.244, 0:02:22, Ethernet2
E 10.75.139.0 [200/129] via 10.119.254.240, 0:02:23, Ethernet2
E 10.16.208.0 [200/128] via 10.119.254.244, 0:02:22, Ethernet2
E 10.84.148.0 [200/129] via 10.119.254.240, 0:02:23, Ethernet2
E 10.31.223.0 [200/128] via 10.119.254.244, 0:02:22, Ethernet2
E 10.44.236.0 [200/129] via 10.119.254.240, 0:02:23, Ethernet2
E 10.141.0.0 [200/129] via 10.119.254.240, 0:02:22, Ethernet2
E 10.140.0.0 [200/129] via 10.119.254.240, 0:02:23, Ethernet2
The following
sample output from the
show ip route
command includes routes learned from IS-IS Level 2:
Device# show ip route
Codes: R - RIP derived, O - OSPF derived,
C - connected, S - static, B - BGP derived,
* - candidate default route, IA - OSPF inter area route,
i - IS-IS derived, ia - IS-IS, U - per-user static route,
o - on-demand routing, M - mobile, P - periodic downloaded static route,
D - EIGRP, EX - EIGRP external, E1 - OSPF external type 1 route,
E2 - OSPF external type 2 route, N1 - OSPF NSSA external type 1 route,
N2 - OSPF NSSA external type 2 route
Gateway of last resort is not set
10.89.0.0 is subnetted (mask is 255.255.255.0), 3 subnets
C 10.89.64.0 255.255.255.0 is possibly down,
routing via 10.0.0.0, Ethernet0
i L2 10.89.67.0 [115/20] via 10.89.64.240, 0:00:12, Ethernet0
i L2 10.89.66.0 [115/20] via 10.89.64.240, 0:00:12, Ethernet0
The following is
sample output from the
show ip route
ip-address
mask
longer-prefixes command. When this keyword is
included, the address-mask pair becomes the prefix, and any address that
matches that prefix is displayed. Therefore, multiple addresses are displayed.
The logical AND operation is performed on the source address 10.0.0.0 and the
mask 10.0.0.0, resulting in 10.0.0.0. Each destination in the routing table is
also logically ANDed with the mask and compared with 10.0.0.0. Any destinations
that fall into that range are displayed in the output.
Device# show ip route 10.0.0.0 10.0.0.0 longer-prefixes
Codes: R - RIP derived, O - OSPF derived,
C - connected, S - static, B - BGP derived,
* - candidate default route, IA - OSPF inter area route,
i - IS-IS derived, ia - IS-IS, U - per-user static route,
o - on-demand routing, M - mobile, P - periodic downloaded static route,
D - EIGRP, EX - EIGRP external, E1 - OSPF external type 1 route,
E2 - OSPF external type 2 route, N1 - OSPF NSSA external type 1 route,
N2 - OSPF NSSA external type 2 route
Gateway of last resort is not set
S 10.134.0.0 is directly connected, Ethernet0
S 10.10.0.0 is directly connected, Ethernet0
S 10.129.0.0 is directly connected, Ethernet0
S 10.128.0.0 is directly connected, Ethernet0
S 10.49.246.0 is directly connected, Ethernet0
S 10.160.97.0 is directly connected, Ethernet0
S 10.153.88.0 is directly connected, Ethernet0
S 10.76.141.0 is directly connected, Ethernet0
S 10.75.138.0 is directly connected, Ethernet0
S 10.44.237.0 is directly connected, Ethernet0
S 10.31.222.0 is directly connected, Ethernet0
S 10.16.209.0 is directly connected, Ethernet0
S 10.145.0.0 is directly connected, Ethernet0
S 10.141.0.0 is directly connected, Ethernet0
S 10.138.0.0 is directly connected, Ethernet0
S 10.128.0.0 is directly connected, Ethernet0
10.19.0.0 255.255.255.0 is subnetted, 1 subnets
C 10.19.64.0 is directly connected, Ethernet0
10.69.0.0 is variably subnetted, 2 subnets, 2 masks
C 10.69.232.32 255.255.255.240 is directly connected, Ethernet0
S 10.69.0.0 255.255.0.0 is directly connected, Ethernet0
The following
sample outputs from the
show ip route
command display all downloaded static routes. A “p” indicates that these routes
were installed using the AAA route download function.
Device# show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, * - candidate default
U - per-user static route, o - ODR, P - periodic downloaded static route
T - traffic engineered route
Gateway of last resort is 172.16.17.1 to network 10.0.0.0
172.31.0.0/32 is subnetted, 1 subnets
P 172.31.229.41 is directly connected, Dialer1 10.0.0.0/8 is subnetted, 3 subnets
P 10.1.1.0 [200/0] via 172.31.229.41, Dialer1
P 10.1.3.0 [200/0] via 172.31.229.41, Dialer1
P 10.1.2.0 [200/0] via 172.31.229.41, Dialer1
Device# show ip route static
172.16.4.0/8 is variably subnetted, 2 subnets, 2 masks
P 172.16.1.1/32 is directly connected, BRI0
P 172.16.4.0/8 [1/0] via 10.1.1.1, BRI0
S 172.31.0.0/16 [1/0] via 172.16.114.65, Ethernet0
S 10.0.0.0/8 is directly connected, BRI0
P 10.0.0.0/8 is directly connected, BRI0
172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks
S 172.16.114.201/32 is directly connected, BRI0
S 172.16.114.205/32 is directly connected, BRI0
S 172.16.114.174/32 is directly connected, BRI0
S 172.16.114.12/32 is directly connected, BRI0
P 10.0.0.0/8 is directly connected, BRI0
P 10.1.0.0/16 is directly connected, BRI0
P 10.2.2.0/24 is directly connected, BRI0
S* 0.0.0.0/0 [1/0] via 172.16.114.65, Ethernet0
S 172.16.0.0/16 [1/0] via 172.16.114.65, Ethernet0
The following
sample output from the
show
ip
route
static download command displays all active and inactive
routes installed using the AAA route download function:
Device# show ip route static download
Connectivity: A - Active, I - Inactive
A 10.10.0.0 255.0.0.0 BRI0
A 10.11.0.0 255.0.0.0 BRI0
A 10.12.0.0 255.0.0.0 BRI0
A 10.13.0.0 255.0.0.0 BRI0
I 10.20.0.0 255.0.0.0 172.21.1.1
I 10.22.0.0 255.0.0.0 Serial0
I 10.30.0.0 255.0.0.0 Serial0
I 10.31.0.0 255.0.0.0 Serial1
I 10.32.0.0 255.0.0.0 Serial1
A 10.34.0.0 255.0.0.0 192.168.1.1
A 10.36.1.1 255.255.255.255 BRI0 200 name remote1
I 10.38.1.9 255.255.255.0 192.168.69.1
The following
sample outputs from the
show
ip route
nhrp command display shortcut switching on the
tunnel interface:
Device# show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
Gateway of last resort is not set
10.0.0.0/16 is variably subnetted, 3 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Tunnel0
C 172.16.22.0 is directly connected, Ethernet1/0
H 172.16.99.0 [250/1] via 10.1.1.99, 00:11:43, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
C 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip route nhrp
H 172.16.99.0 [250/1] via 10.1.1.99, 00:11:43, Tunnel0
The following are
sample outputs from the
show ip route
command when the
next-hop-override keyword is used. When this
keyword is included, the NHRP next-hop overrides that are associated with a
particular route and the corresponding default next hops are displayed.
===============================================================
1) Initial configuration
===============================================================
Device# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route
Gateway of last resort is not set
10.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
L 10.2.1.1/32 is directly connected, Loopback1
10.0.0.0/24 is subnetted, 1 subnets
S 10.10.10.0 is directly connected, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
S 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip route next-hop-override
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route
Gateway of last resort is not set
10.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
L 10.2.1.1/32 is directly connected, Loopback1
10.0.0.0/24 is subnetted, 1 subnets
S 10.10.10.0 is directly connected, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
S 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip cef
Prefix Next Hop Interface
.
.
.
10.2.1.255/32 receive Loopback1
10.10.10.0/24 attached Tunnel0 <<<<<<<<
10.11.11.0/24 attached Ethernet0/0
172.16.0.0/12 drop
.
.
.
===============================================================
2) Add a next-hop override
address = 10.10.10.0
mask = 255.255.255.0
gateway = 10.1.1.1
interface = Tunnel0
===============================================================
Device# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route
Gateway of last resort is not set
10.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
L 10.2.1.1/32 is directly connected, Loopback1
10.0.0.0/24 is subnetted, 1 subnets
S 10.10.10.0 is directly connected, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
S 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip route next-hop-override
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route
Gateway of last resort is not set
10.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
L 10.2.1.1/32 is directly connected, Loopback1
10.0.0.0/24 is subnetted, 1 subnets
S 10.10.10.0 is directly connected, Tunnel0
[NHO][1/0] via 10.1.1.1, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
S 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip cef
Prefix Next Hop Interface
.
.
.
10.2.1.255/32 receive Loopback110.10.10.0/24
10.10.10.0/24 10.1.1.1 Tunnel0
10.11.11.0/24 attached Ethernet0/0
10.12.0.0/16 drop
.
.
.
===============================================================
3) Delete a next-hop override
address = 10.10.10.0
mask = 255.255.255.0
gateway = 10.11.1.1
interface = Tunnel0
===============================================================
Device# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route
Gateway of last resort is not set
10.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
L 10.2.1.1/32 is directly connected, Loopback1
10.0.0.0/24 is subnetted, 1 subnets
S 10.10.10.0 is directly connected, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
S 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip route next-hop-override
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route
Gateway of last resort is not set
10.2.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
L 10.2.1.1/32 is directly connected, Loopback1
10.0.0.0/24 is subnetted, 1 subnets
S 10.10.10.0 is directly connected, Tunnel0
10.11.0.0/24 is subnetted, 1 subnets
S 10.11.11.0 is directly connected, Ethernet0/0
Device# show ip cef
Prefix Next Hop Interface
.
.
.
10.2.1.255/32 receive Loopback110.10.10.0/24
10.10.10.0/24 attached Tunnel0
10.11.11.0/24 attached Ethernet0/0
10.120.0.0/16 drop
.
.
.
The table below
describes the significant fields shown in the displays:
Table 51. show ip route Field Descriptions
Field
|
Description
|
Codes
(Protocol)
|
Indicates
the protocol that derived the route. It can be one of the following values:
-
B—BGP
derived
-
C—Connected
-
D—Enhanced Interior Gateway Routing Protocol (EIGRP)
-
EX—EIGRP external
-
H—NHRP
-
i—IS-IS derived
-
ia—IS-IS
-
L—Local
-
M—Mobile
-
o—On-demand routing
-
O—Open Shortest Path First (OSPF) derived
-
P—Periodic downloaded static route
-
R—Routing Information Protocol (RIP) derived
-
S—Static
-
U—Per-user static route
-
+—Replicated route
|
Codes
(Type)
|
Type of
route. It can be one of the following values:
-
*—Indicates the last path used when a packet was forwarded. This
information is specific to nonfast-switched packets.
-
E1—OSPF external type 1 route
-
E2—OSPF external type 2 route
-
IA—OSPF interarea route
-
L1—IS-IS Level 1 route
-
L2—IS-IS Level 2 route
-
N1—OSPF not-so-stubby area (NSSA) external type 1 route
-
N2—OSPF NSSA external type 2 route
|
10.110.0.0
|
Indicates
the address of the remote network.
|
[160/5]
|
The first
number in brackets is the administrative distance of the information source;
the second number is the metric for the route.
|
via
10.119.254.6
|
Specifies
the address of the next device to the remote network.
|
0:01:00
|
Specifies
the last time the route was updated (in hours:minutes:seconds).
|
Ethernet2
|
Specifies
the interface through which the specified network can be reached.
|
Examples
The following
example shows that IP route 10.8.8.0 is directly connected to the Internet and
is the next-hop (option 3) default gateway. Routes 10.1.1.1 [1/0], 10.3.2.1
[24/0], and 172.16.2.2 [1/0] are static, and route 10.0.0.0/0 is a default
route candidate. The fields in the display are self-explanatory.
Device# show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 10.0.19.14 to network 0.0.0.0
10.0.0.0/24 is subnetted, 1 subnets
C 10.8.8.0 is directly connected, Ethernet1
10.0.0.0/32 is subnetted, 1 subnets
S 10.1.1.1 [1/0] via 10.8.8.1
10.0.0.0/32 is subnetted, 1 subnets
S 10.3.2.1 [24/0] via 10.8.8.1
172.16.0.0/32 is subnetted, 1 subnets
S 172.16.2.2 [1/0] via 10.8.8.1
10.0.0.0/28 is subnetted, 1 subnets
C 10.0.19.0 is directly connected, Ethernet0
10.0.0.0/24 is subnetted, 1 subnets
C 10.15.15.0 is directly connected, Loopback0
S* 10.0.0.0/0 [1/0] via 10.0.19.14
The following
sample output from the
show ip route repair-paths
command shows repair paths marked with the tag [RPR]. The fields in the display
are self-explanatory:
Device# show ip route repair-paths
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, 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, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP
+ - replicated route, % - next hop override
Gateway of last resort is not set
10.0.0.0/32 is subnetted, 3 subnets
C 10.1.1.1 is directly connected, Loopback0
B 10.2.2.2 [200/0] via 172.16.1.2, 00:31:07
[RPR][200/0] via 192.168.1.2, 00:31:07
B 10.9.9.9 [20/0] via 192.168.1.2, 00:29:45
[RPR][20/0] via 192.168.3.2, 00:29:45
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 172.16.1.0/24 is directly connected, Ethernet0/0
L 172.16.1.1/32 is directly connected, Ethernet0/0
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, Serial2/0
L 192.168.1.1/32 is directly connected, Serial2/0
B 192.168.3.0/24 [200/0] via 172.16.1.2, 00:31:07
[RPR][200/0] via 192.168.1.2, 00:31:07
B 192.168.9.0/24 [20/0] via 192.168.1.2, 00:29:45
[RPR][20/0] via 192.168.3.2, 00:29:45
B 192.168.13.0/24 [20/0] via 192.168.1.2, 00:29:45
[RPR][20/0] via 192.168.3.2, 00:29:45
Device# show ip route repair-paths 10.9.9.9
>Routing entry for 10.9.9.9/32
> Known via "bgp 100", distance 20, metric 0
> Tag 10, type external
> Last update from 192.168.1.2 00:44:52 ago
> Routing Descriptor Blocks:
> * 192.168.1.2, from 192.168.1.2, 00:44:52 ago, recursive-via-conn
> Route metric is 0, traffic share count is 1
> AS Hops 2
> Route tag 10
> MPLS label: none
> [RPR]192.168.3.2, from 172.16.1.2, 00:44:52 ago
> Route metric is 0, traffic share count is 1
> AS Hops 2
> Route tag 10
> MPLS label: none