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Problem with Static Route.
amb1s1
Member Posts: 408
in CCNA & CCENT
Hi I'm have a lab on GNS3 that consist of 3 3600 routers and 2 pc (Routers acting as a PC). All routers have 255.255.255.252 mask on their serial interfaces. The two Fast interface that connect to the PC have a 255.255.255.0 mask. When I do all the ip route on all routers, I can ping all routers, but none of the PC. Does static work when mixing mask type? The following are my Configs.
This is the config for one of the PC (Router) the one that it is connect to Router_1 on FA1/0.
Router_1(config)#do sh run Building configuration... Current configuration : 1050 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router_1 ! boot-start-marker boot-end-marker ! no logging console ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ip auth-proxy max-nodata-conns 3 ip admission max-nodata-conns 3 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Serial0/0 ip address 10.1.1.1 255.255.255.252 serial restart-delay 0 clock rate 64000 no fair-queue ! interface Serial0/1 no ip address shutdown serial restart-delay 0 ! interface Serial0/2 no ip address shutdown serial restart-delay 0 ! interface Serial0/3 no ip address shutdown serial restart-delay 0 ! interface FastEthernet1/0 ip address 192.168.1.1 255.255.255.0 duplex auto speed auto ! ip http server no ip http secure-server ! ip forward-protocol nd ip route 10.2.2.0 255.255.255.252 10.1.1.2 ip route 192.168.3.0 255.255.255.0 10.1.1.2 ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 login ! ! end
Router_2#sh run Building configuration... Current configuration : 952 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router_2 ! boot-start-marker boot-end-marker ! no logging console ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ip auth-proxy max-nodata-conns 3 ip admission max-nodata-conns 3 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Serial0/0 ip address 10.1.1.2 255.255.255.252 serial restart-delay 0 no fair-queue ! interface Serial0/1 ip address 10.2.2.2 255.255.255.252 serial restart-delay 0 clock rate 64000 ! interface Serial0/2 no ip address shutdown serial restart-delay 0 ! interface Serial0/3 no ip address shutdown serial restart-delay 0 ! ip http server no ip http secure-server ! ip forward-protocol nd ip route 192.168.1.0 255.255.255.0 10.1.1.1 ip route 192.168.3.0 255.255.255.0 10.2.2.1 ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 login ! ! end
Router_3#sh run Building configuration... Current configuration : 1013 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router_3 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef no ip domain lookup ! ! ip auth-proxy max-nodata-conns 3 ip admission max-nodata-conns 3 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Serial0/0 ip address 10.2.2.1 255.255.255.252 serial restart-delay 0 no fair-queue ! interface Serial0/1 no ip address shutdown serial restart-delay 0 ! interface Serial0/2 no ip address shutdown serial restart-delay 0 ! interface Serial0/3 no ip address shutdown serial restart-delay 0 ! interface FastEthernet1/0 ip address 192.168.3.1 255.255.255.0 duplex auto speed auto ! ip http server no ip http secure-server ! ip forward-protocol nd ip route 10.1.1.0 255.255.255.252 10.2.2.2 ip route 192.168.1.0 255.255.255.0 10.2.2.2 ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 login ! ! end
This is the config for one of the PC (Router) the one that it is connect to Router_1 on FA1/0.
PC-A#sh run Building configuration... Current configuration : 648 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PC-A ! boot-start-marker boot-end-marker ! ! memory-size iomem 15 mmi polling-interval 60 no mmi auto-configure no mmi pvc mmi snmp-timeout 180 no aaa new-model ip subnet-zero ! ! ! ip cef ip audit po max-events 100 ! ! ! ! ! ! ! ! interface Ethernet0 no ip address shutdown half-duplex ! interface FastEthernet0 ip address 192.168.1.3 255.255.255.0 speed auto ! ip default-gateway 192.168.1.1 ip classless no ip http server no ip http secure-server ! ! ! ! ! line con 0 line aux 0 line vty 0 4 login ! end
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networker050184
Mod Posts: 11,962 Mod
IP default gateway is used when the router is not routing traffic. You need a default route.An expert is a man who has made all the mistakes which can be made. -
Optionsamb1s1
Member Posts: 408
networker050184 wrote: »IP default gateway is used when the router is not routing traffic. You need a default route.
That router is not routing traffic, that router is used on my lab as a PC. I'm using the GNS3 emulator, they don't have a PC emulator for they use router as PCs. -
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mikej412
Member Posts: 10,086 ■■■■■■■■■■
Exactly what did you ping?When I do all the ip route on all routers, I can ping all routers, but none of the PC.
Can the "PC" ping it's gateway IP on R1?
Can R1 ping PC 1?
Can PC1 ping the Serial port IP address on R1?
Can R1 ping the R2 serial address?
Can R2 ping the R1 fast ethernet address?
Can PC1 ping the R2 serial address?
Can R2 ping the R3 serial address?
Can R2 ping the R3 fast ethernet address?
Can R1 ping the R3 fast ethernet address?
Can R3 ping P2's non-connected serial IP address (the 10.1.1.2 address)
etc....:mike: Cisco Certifications -- Collect the Entire Set! -
Optionsamb1s1
Member Posts: 408
This is the picture of my topology:
Lab on Flickr - Photo Sharing!
I can ping all the routers from each router. I can Ping PC-A from Router_1 and vice-versa. -
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miller811
Member Posts: 897
if you run a show ip route in the hosts (routers) they will show only one entry under the configuration you have entered..
gateway of last resort is blank
on those routers add
ip route 0.0.0.0 0.0.0.0 fastEthernet0/0
which tell the router that any address is does not recognize forward out through f0/0
now run show ip route
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
C 192.168.3.0/24 is directly connected, FastEthernet0/0
S* 0.0.0.0/0 is directly connected, FastEthernet0/0
everything will ping straight throughI don't claim to be an expert, but I sure would like to become one someday.
Quest for 11K pages read in 2011
Page Count total to date - 1283 -
Optionsmikej412
Member Posts: 10,086 ■■■■■■■■■■
He'd probably wants the no ip route command on the "PCs" so that they act like PCs and use the default gateway for non-local network traffic -- otherwise they are just more routers.
If he can ping the default gateway address on R1 but not the Serial IP on R1 -- then it would come back to checking the "default gateway" on the "PC" -- either wrong IP or not used because routing is enabled on the "PC router"
edit: should be no ip routing to make the router act like a stupid PC.:mike: Cisco Certifications -- Collect the Entire Set! -
Optionsmiller811
Member Posts: 897
He'd probably wants the no ip route command on the "PCs" so that they act like PCs and use the default gateway for non-local network traffic -- otherwise they are just more routers.
If he can ping the default gateway address on R1 but not the Serial IP on R1 -- then it would come back to checking the "default gateway" on the "PC" -- either wrong IP or not used because routing is enabled on the "PC router"
You the man.
the "router" was acting like a router (imagine that)
, once the no ip routing was adding, it followed the default gateway and pinged PC to PC through the network. I don't claim to be an expert, but I sure would like to become one someday.
Quest for 11K pages read in 2011
Page Count total to date - 1283 -
Optionsamb1s1
Member Posts: 408
I get the following when I do the no ip route command on PC-a:He'd probably wants the no ip route command on the "PCs" so that they act like PCs and use the default gateway for non-local network traffic -- otherwise they are just more routers.
If he can ping the default gateway address on R1 but not the Serial IP on R1 -- then it would come back to checking the "default gateway" on the "PC" -- either wrong IP or not used because routing is enabled on the "PC router"PC-A(config)#no ip route % Incomplete command.
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Optionsamb1s1
Member Posts: 408
You the man.
the "router" was acting like a router (imagine that), once the no ip routing was adding, it followed the default gateway and pinged PC to PC through the network.
OK I got it, I did the no ip routing and is pinging. Thanks for your help -
Optionsmikej412
Member Posts: 10,086 ■■■■■■■■■■
Yep -- that's it. I usually toss in the e and get the error, then I go for rout and tab completion. It's not something that you do everyday on routers in real life.no ip routing
:mike: Cisco Certifications -- Collect the Entire Set!
