ospf默认路由

root@mpls1:/home/devuser# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.122.1   0.0.0.0         UG    0      0        0 enp1s0
192.168.1.4     0.0.0.0         255.255.255.255 UH    0      0        0 enp7s0
192.168.2.4     192.168.122.35  255.255.255.255 UGH   20     0        0 enp1s0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 enp1s0
root@mpls1:/home/devuser# traceroute 192.168.2.5
traceroute to 192.168.2.5 (192.168.2.5), 30 hops max, 60 byte packets
 1  192.168.122.1 (192.168.122.1)  0.187 ms  0.167 ms  0.158 ms
 2  10.10.27.254 (10.10.27.254)  11.910 ms  12.212 ms  12.541 ms   ------------------
 3  192.168.3.1 (192.168.3.1)  14.092 ms  14.192 ms  14.255 ms          ------------------------
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *
17  * * *
18  * * *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  * * *
26  * * *
27  * * *
28  * * *
29  * * *
30  * * *
root@mpls1:/home/devuser# route del default gw 192.168.122.1

root@mpls1:/home/devuser# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.3     192.168.1.4     255.255.255.255 UGH   20     0        0 enp7s0
192.168.1.4     0.0.0.0         255.255.255.255 UH    0      0        0 enp7s0
192.168.2.4     192.168.122.35  255.255.255.255 UGH   20     0        0 enp1s0
192.168.2.5     192.168.1.4     255.255.255.255 UGH   20     0        0 enp7s0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 enp1s0
192.168.123.0   192.168.1.4     255.255.255.0   UG    20     0        0 enp7s0

root@mpls1:/home/devuser# traceroute 192.168.2.5
traceroute to 192.168.2.5 (192.168.2.5), 30 hops max, 60 byte packets
 1  192.168.1.4 (192.168.1.4)  0.224 ms  0.199 ms  0.187 ms
 2  192.168.2.5 (192.168.2.5)  0.621 ms  0.616 ms  0.608 ms
root@mpls1:/home/devuser# traceroute 192.168.2.5
traceroute to 192.168.2.5 (192.168.2.5), 30 hops max, 60 byte packets
 1  192.168.1.4 (192.168.1.4)  0.259 ms  0.235 ms  0.222 ms
 2  192.168.2.5 (192.168.2.5)  0.197 ms  0.180 ms  0.168 ms
root@mpls1:/home/devuser# traceroute 192.168.2.5
traceroute to 192.168.2.5 (192.168.2.5), 30 hops max, 60 byte packets
connect: Network is unreachable
root@mpls1:/home/devuser#