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This trouble ticket focuses on redistribution of EIGRP and OSPF. You are presented with
baseline data, a trouble ticket, a topology, and information collected while investigating
the reported issue. You are then challenged to identify the issue and create an action plan
to resolve it.
Because different IP routing protocols might exhibit different characteristics when performing
route redistribution, you should research the syntax used for your specific protocols.
As a reference for this trouble ticket, Table 7-10 provides a collection of commands
that might be useful in troubleshooting EIGRP or OSPF route redistribution.
Key
Topic
Table 7-10 Route Redistribution Verification and Troubleshooting Syntax for EIGRP
and OSPF
Command Description
router ospf process-id Global configuration mode command that enables an OSPF
process on a router
redistribute eigrp
autonomous-system-number
[subnets]
Router configuration mode command that redistributes
routes, including subnets (if the optional subnets parameter is
specified), from a specified EIGRP autonomous system into
OSPF
continues
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Trouble Ticket #5
You receive the following trouble ticket:
Company A has acquired company B. Company A’s network (that is, routers R1 and
R2) uses EIGRP, whereas Company B’s network (that is, routers BB1 and BB2) uses
OSPF. Router R2 was configured as a boundary router, and router R2’s configuration
specifies that EIGRP and OSPF are mutually redistributed. The configuration was
originally functional. However, routers R1, BB1, and BB2 do not currently see all the
subnets present in the network.
This trouble ticket references the topology shown in Figure 7-9.
You begin your troubleshooting efforts by analyzing baseline information collected when
the configuration was working properly. Examples 7-35, 7-36, 7-37, and 7-38 provide output
from the show ip route command on each router.
Example 7-35 Baseline Output for Router R1
R1# 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
default-metric metric Router configuration mode command that specifies the metric
used for routes redistributed into OSPF
router eigrp autonomoussystem-
number
Global configuration mode command that enables an EIGRP
routing process on a router
redistribute ospf process-id Router configuration mode command that redistributes
routes from a specified OSPF process ID into EIGRP
default-metric bandwidth
delay reliability load mtu
Router configuration mode command that specifies the parameters
used to calculate the seed metric for routes being redistributed
into EIGRP, using the following EIGRP metric
parameters:
bandwidth (in kbps)
delay (in tens of microseconds)
reliability (maximum of 255)
load (minimum of 1)
mtu (in bytes)
Table 7-10 Route Redistribution Verification and Troubleshooting Syntax for EIGRP
and OSPF (Continued)
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Chapter 7: OSPF and Route Redistribution Troubleshooting 211
S 1/0.2
.1
Lo 0
10.3.3.3/32
.1
Fa 0/0
S 1/0.2
.1
DLCI = 182
DLCI = 811
S 1/0.1
.1
Lo 0
10.1.1.1/32
Lo 0
10.2.2.2/32
172.16.1.0/30
Fa 0/0
DLCI = 881
.11
FXS
1/0/0
FXS
1/0/1
R2
192.168.1.0/24
192.168.0.0/24
.11
Fa 0/1
172.16.2.0/30
S 1/0.1
.2
DLCI = 882
Fa 0/0
.22
10.1.3.0/30
10.1.2.0/24
Gig 0/8 Fa 5/46
Lo 0
10.4.4.4/32
S 1/0.2
.2
DLCI = 821 .2
Fa 0/0
Gig 0/9 Fa 5/47
Fa 5/45
x3333
Gig 0/10 Fa 5/48
100 Mbps
10 Mbps
R1
BB2
BB1
R2 FRSW
x2222
EIGRP AS 100 OSPF Area 0
x1111
SW1 SW2
S 1/0.1
.2
DLCI = 181
Figure 7-9 Trouble Ticket #5: Topology
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/30 is subnetted, 2 subnets
D EX 172.16.1.0 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 172.16.2.0 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
D 10.2.2.2/32 [90/156160] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 10.1.3.0/30 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 10.3.3.3/32 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 10.1.2.0/24 [170/1734656] via 192.168.0.22, 00:04:40, FastEthernet0/1
C 10.1.1.1/32 is directly connected, Loopback0
D EX 10.4.4.4/32 [170/1734656] via 192.168.0.22, 00:04:40, FastEthernet0/1
C 192.168.0.0/24 is directly connected, FastEthernet0/1
C 192.168.1.0/24 is directly connected, FastEthernet0/0
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Example 7-36 Baseline Output for Router R2
R2# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, Serial1/0.1
C 172.16.2.0 is directly connected, Serial1/0.2
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
C 10.2.2.2/32 is directly connected, Loopback0
O 10.1.3.0/30 [110/144] via 172.16.2.2, 00:07:12, Serial1/0.2
O 10.3.3.3/32 [110/91] via 172.16.2.2, 00:07:12, Serial1/0.2
O 10.1.2.0/24 [110/90] via 172.16.2.2, 00:07:12, Serial1/0.2
D 10.1.1.1/32 [90/409600] via 192.168.0.11, 00:04:46, FastEthernet0/0
O 10.4.4.4/32 [110/81] via 172.16.2.2, 00:07:12, Serial1/0.2
C 192.168.0.0/24 is directly connected, FastEthernet0/0
D 192.168.1.0/24 [90/284160] via 192.168.0.11, 00:04:46, FastEthernet0/0
Example 7-37 Baseline Output for Router BB1
BB1# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, Serial1/0.2
O 172.16.2.0 [110/90] via 10.1.2.2, 00:07:08, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
O E2 10.2.2.2/32 [110/64] via 10.1.2.2, 00:07:08, FastEthernet0/0
C 10.1.3.0/30 is directly connected, Serial1/0.1
C 10.3.3.3/32 is directly connected, Loopback0
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C 10.1.2.0/24 is directly connected, FastEthernet0/0
O E2 10.1.1.1/32 [110/64] via 10.1.2.2, 00:04:49, FastEthernet0/0
O 10.4.4.4/32 [110/11] via 10.1.2.2, 00:07:08, FastEthernet0/0
O E2 192.168.0.0/24 [110/64] via 10.1.2.2, 00:07:08, FastEthernet0/0
O E2 192.168.1.0/24 [110/64] via 10.1.2.2, 00:04:49, FastEthernet0/0
Example 7-38 Baseline Output for Router BB2
BB2# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
O 172.16.1.0 [110/143] via 10.1.2.1, 00:08:48, FastEthernet0/0
C 172.16.2.0 is directly connected, Serial1/0.2
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
O E2 10.2.2.2/32 [110/64] via 172.16.2.1, 00:08:48, Serial1/0.2
C 10.1.3.0/30 is directly connected, Serial1/0.1
O 10.3.3.3/32 [110/11] via 10.1.2.1, 00:08:48, FastEthernet0/0
C 10.1.2.0/24 is directly connected, FastEthernet0/0
O E2 10.1.1.1/32 [110/64] via 172.16.2.1, 00:06:30, Serial1/0.2
C 10.4.4.4/32 is directly connected, Loopback0
O E2 192.168.0.0/24 [110/64] via 172.16.2.1, 00:08:48, Serial1/0.2
O E2 192.168.1.0/24 [110/64] via 172.16.2.1, 00:06:30, Serial1/0.2
Router R2, acting as a boundary router, had previously been configured for mutual route
redistribution. Example 7-39 illustrates this route redistribution configuration.
Example 7-39 Mutual Route Redistribution on Router R2
R2# show run begin router
router eigrp 100
redistribute ospf 1 metric 1500 100 255 1 1500
network 10.2.2.2 0.0.0.0
network 192.168.0.0
no auto-summary
!
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router ospf 1
redistribute eigrp 100 metric 64 subnets
network 172.16.1.0 0.0.0.3 area 0
network 172.16.2.0 0.0.0.3 area 0
To begin the troubleshooting process, you issue the show ip route command on all
routers to determine exactly what routes are missing from the IP routing table of each
router.
Router R1’s IP routing table lacks all OSPF-learned routes, as shown in Example 7-40.
Example 7-40 Router R1’s IP Routing Table
R1# 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 not set
10.0.0.0/32 is subnetted, 2 subnets
D 10.2.2.2 [90/156160] via 192.168.0.22, 00:09:44, FastEthernet0/1
C 10.1.1.1 is directly connected, Loopback0
C 192.168.0.0/24 is directly connected, FastEthernet0/1
C 192.168.1.0/24 is directly connected, FastEthernet0/0
Router R1, which is acting as the boundary router, is actively participating in both the
EIGRP and OSPF routing processes. Therefore, all routes are visible in the IP routing table
of router R2, as shown in Example 7-41.
Example 7-41 IP Routing Table of Router R2
R2# 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
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Gateway of last resort is not set
172.16.0.0/30 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, Serial1/0.1
C 172.16.2.0 is directly connected, Serial1/0.2
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
C 10.2.2.2/32 is directly connected, Loopback0
O 10.1.3.0/30 [110/144] via 172.16.2.2, 00:07:12, Serial1/0.2
O 10.3.3.3/32 [110/91] via 172.16.2.2, 00:07:12, Serial1/0.2
O 10.1.2.0/24 [110/90] via 172.16.2.2, 00:07:12, Serial1/0.2
D 10.1.1.1/32 [90/409600] via 192.168.0.11, 00:04:46, FastEthernet0/0
O 10.4.4.4/32 [110/81] via 172.16.2.2, 00:07:12, Serial1/0.2
C 192.168.0.0/24 is directly connected, FastEthernet0/0
D 192.168.1.0/24 [90/284160] via 192.168.0.11, 00:04:46, FastEthernet0/0
Router BB1, which is running OSPF, has some routes that originated in EIGRP. However,
the 10.1.1.1/32 and the 10.2.2.2/32 networks, which are the IP addresses of the Loopback
0 interfaces on routers R1 and R2, are missing from the IP routing table of router BB1, as
illustrated in Example 7-42.
Example 7-42 IP Routing Table of Router BB1
BB1# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, Serial1/0.2
O 172.16.2.0 [110/90] via 10.1.2.2, 00:13:00, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks
C 10.1.3.0/30 is directly connected, Serial1/0.1
C 10.3.3.3/32 is directly connected, Loopback0
C 10.1.2.0/24 is directly connected, FastEthernet0/0
O 10.4.4.4/32 [110/11] via 10.1.2.2, 00:13:00, FastEthernet0/0
O E2 192.168.0.0/24 [110/64] via 10.1.2.2, 00:01:14, FastEthernet0/0
O E2 192.168.1.0/24 [110/64] via 10.1.2.2, 00:01:14, FastEthernet0/0
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The IP routing table of router BB2, as depicted in Example 7-43, is similar to the IP routing
table of router BB1.
Example 7-43 IP Routing Table of Router BB2
BB2# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
O 172.16.1.0 [110/143] via 10.1.2.1, 00:13:39, FastEthernet0/0
C 172.16.2.0 is directly connected, Serial1/0.2
10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks
C 10.1.3.0/30 is directly connected, Serial1/0.1
O 10.3.3.3/32 [110/11] via 10.1.2.1, 00:13:39, FastEthernet0/0
C 10.1.2.0/24 is directly connected, FastEthernet0/0
C 10.4.4.4/32 is directly connected, Loopback0
O E2 192.168.0.0/24 [110/64] via 172.16.2.1, 00:01:53, Serial1/0.2
O E2 192.168.1.0/24 [110/64] via 172.16.2.1, 00:01:53, Serial1/0.2
Because router R2 is acting as the boundary router, you examine its redistribution configuration,
as shown in 7-44.
Example 7-44 Redistribution Configuration on Router R2
R2# show run begin router
router eigrp 100
redistribute ospf 1
network 10.2.2.2 0.0.0.0
network 192.168.0.0
no auto-summary
!
router ospf 1
log-adjacency-changes
redistribute eigrp 100 metric 64
network 172.16.1.0 0.0.0.3 area 0
network 172.16.2.0 0.0.0.3 area 0
Take a moment to look through the baseline configuration information, the topology, the
show command output collected after the issue was reported, and the syntax reference
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Chapter 7: OSPF and Route Redistribution Troubleshooting 217
presented in Table 7-10. Then hypothesize the underlying cause or causes of the reported
issue, explaining why routers R1, BB1, and BB2 do not see all the networks in the topology,
even though mutual redistribution does appear to be configured on router R2.
Suggested Solution
After examining the redistribution configuration on router R2, you might have noticed the
following issues:
■ The EIGRP routing process on router R2 lacked a default metric, which would be assigned
to routes being redistributed into the EIGRP routing process. Example 7-45
shows the commands used to correct this misconfiguration.
Example 7-45 Adding a Default Metric for Router R2’s EIGRP Routing Process
R2# conf term
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#router eigrp 100
R2(config-router)#default-metric 1500 100 255 1 1500
R2(config-router)#end
■ The OSPF routing process lacked the subnets parameter at the end of the
redistribute command. The subnets parameter is required to allow nonclassful networks
to be redistributed into OSPF. Example 7-46 illustrates how this configuration
can be corrected.
Example 7-46 Redistributing Subnets into Router R2’s OSPF Routing Process
R2# conf term
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#router ospf 1
R2(config-router)#no redistribute eigrp 100 metric 64
R2(config-router)#redistribute eigrp 100 metric 64 subnets
R2(config-router)#end
After making the suggested corrections, all routers in the topology have IP routing tables
that contain all advertised networks. Examples 7-47, 7-48, 7-49, and 7-50 illustrate the IP
routing tables of these routers.
Example 7-47 IP Routing Table of Router R1
R1# 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
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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 not set
172.16.0.0/30 is subnetted, 2 subnets
D EX 172.16.1.0 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 172.16.2.0 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
D 10.2.2.2/32 [90/156160] via 192.168.0.22, 00:18:05, FastEthernet0/1
D EX 10.1.3.0/30 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 10.3.3.3/32 [170/1734656] via 192.168.0.22, 00:04:39, FastEthernet0/1
D EX 10.1.2.0/24 [170/1734656] via 192.168.0.22, 00:04:40, FastEthernet0/1
C 10.1.1.1/32 is directly connected, Loopback0
D EX 10.4.4.4/32 [170/1734656] via 192.168.0.22, 00:04:40, FastEthernet0/1
C 192.168.0.0/24 is directly connected, FastEthernet0/1
C 192.168.1.0/24 is directly connected, FastEthernet0/0
Example 7-48 IP Routing Table of Router R2
R2# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, Serial1/0.1
C 172.16.2.0 is directly connected, Serial1/0.2
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
C 10.2.2.2/32 is directly connected, Loopback0
O 10.1.3.0/30 [110/144] via 172.16.2.2, 00:21:04, Serial1/0.2
O 10.3.3.3/32 [110/91] via 172.16.2.2, 00:21:04, Serial1/0.2
O 10.1.2.0/24 [110/90] via 172.16.2.2, 00:21:04, Serial1/0.2
D 10.1.1.1/32 [90/409600] via 192.168.0.11, 00:18:38, FastEthernet0/0
O 10.4.4.4/32 [110/81] via 172.16.2.2, 00:21:04, Serial1/0.2
C 192.168.0.0/24 is directly connected, FastEthernet0/0
D 192.168.1.0/24 [90/284160] via 192.168.0.11, 00:18:38, FastEthernet0/0
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Chapter 7: OSPF and Route Redistribution Troubleshooting 219
Example 7-49 IP Routing Table of Router BB1
BB1# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
C 172.16.1.0 is directly connected, Serial1/0.2
O 172.16.2.0 [110/90] via 10.1.2.2, 00:21:08, FastEthernet0/0
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
O E2 10.2.2.2/32 [110/64] via 10.1.2.2, 00:04:44, FastEthernet0/0
C 10.1.3.0/30 is directly connected, Serial1/0.1
C 10.3.3.3/32 is directly connected, Loopback0
C 10.1.2.0/24 is directly connected, FastEthernet0/0
O E2 10.1.1.1/32 [110/64] via 10.1.2.2, 00:04:44, FastEthernet0/0
O 10.4.4.4/32 [110/11] via 10.1.2.2, 00:21:08, FastEthernet0/0
O E2 192.168.0.0/24 [110/64] via 10.1.2.2, 00:04:44, FastEthernet0/0
O E2 192.168.1.0/24 [110/64] via 10.1.2.2, 00:04:44, FastEthernet0/0
Example 7-50 IP Routing Table of Router BB2
BB2# 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 not set
172.16.0.0/30 is subnetted, 2 subnets
O 172.16.1.0 [110/143] via 10.1.2.1, 00:21:13, FastEthernet0/0
C 172.16.2.0 is directly connected, Serial1/0.2
10.0.0.0/8 is variably subnetted, 6 subnets, 3 masks
O E2 10.2.2.2/32 [110/64] via 172.16.2.1, 00:04:50, Serial1/0.2
C 10.1.3.0/30 is directly connected, Serial1/0.1
O 10.3.3.3/32 [110/11] via 10.1.2.1, 00:21:13, FastEthernet0/0
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220 CCNP TSHOOT 642-832 Official Certification Guide
C 10.1.2.0/24 is directly connected, FastEthernet0/0
O E2 10.1.1.1/32 [110/64] via 172.16.2.1, 00:04:50, Serial1/0.2
C 10.4.4.4/32 is directly connected, Loopback0
O E2 192.168.0.0/24 [110/64] via 172.16.2.1, 00:04:50, Serial1/0.2
O E2 192.168.1.0/24 [110/64] via 172.16.2.1, 00:04:50, Serial1/0.2
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