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Does static routing support discontiguous network?
workfrom925
Member Posts: 196
in CCNA & CCENT
Above is a working topology, 7 subnets in the 192.168.9.x /25 network. By that I mean all PCs can ping each other. Then I changed the IP address on the serial connection between Branch1 and HQ to 172.0.0.1/16 and 172.0.0.2/16. Also added this new static route to the Branch2 router. Afterwards none of the PC can ping each other. Even PC2 and PC3 can't ping each other. They are even on the same side of the 172.0.0.0/16 serial link. Am I missing something here or Does static routing support contiguous network only?
Comments
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OptionsDANMOH009
Member Posts: 241
I dont see how changing the serial link between Branch 1 and HQ 2 can cause issues between PC2 and PC3, but im not no expert. any chance of putting the running config of branch 1 router on here? Can have a look but cant make any promises.
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Optionsworkfrom925
Member Posts: 196
I dont see how changing the serial link between Branch 1 and HQ 2 can cause issues between PC2 and PC3, but im not no expert. any chance of putting the running config of branch 1 router on here? Can have a look but cant make any promises.
BRANCH1#show run
Building configuration...
Current configuration : 855 bytes
!
version 12.3
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname BRANCH1
!
!
!
!
!
!
!
!
!
!
!
!
ip ssh version 1
!
!
spanning-tree mode pvst
!
!
!
!
interface FastEthernet0/0
ip address 192.168.9.97 255.255.255.224
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.9.129 255.255.255.224
duplex auto
speed auto
!
interface Serial0/0/0
ip address 172.0.0.2 255.255.0.0
clock rate 64000
!
interface Serial0/0/1
no ip address
shutdown
!
interface Vlan1
no ip address
shutdown
!
ip classless
ip route 192.168.9.192 255.255.255.224 Serial0/0/0
ip route 192.168.9.160 255.255.255.224 Serial0/0/0
ip route 192.168.9.0 255.255.255.224 Serial0/0/0
ip route 192.168.9.64 255.255.255.224 Serial0/0/0
!
!
!
!
!
!
!
line con 0
line vty 0 4
login
!
!
!
end
BRANCH1# -
Optionsworkfrom925
Member Posts: 196
boredgamelad wrote: »Give us the routing table on BRANCH1 also?
Sure.
BRANCH1#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
C 172.0.0.0/16 is directly connected, Serial0/0/0
192.168.9.0/27 is subnetted, 6 subnets
S 192.168.9.0 is directly connected, Serial0/0/0
S 192.168.9.64 is directly connected, Serial0/0/0
C 192.168.9.96 is directly connected, FastEthernet0/0
C 192.168.9.128 is directly connected, FastEthernet0/1
S 192.168.9.160 is directly connected, Serial0/0/0
S 192.168.9.192 is directly connected, Serial0/0/0
BRANCH1#ping 172.0.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 30/46/80 ms
BRANCH1# -
Optionsworkfrom925
Member Posts: 196
PC3 has no default gateway.
I don't know how I made the mistake. I presumed I fixed this. Well, now it's all fine. Thanks.
My conclusion, static routes do support discontiguous networks.
