| Author |
Router on Same Network
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| Howard Huntley 2004-04-10, 8:25 pm |
| I have two routers-switch combinations in my LAB that I want to use
the two serial ports to connect the two routers together on the same
network. I have tried every kind of routing table and other
configuration which has failed. I have not tried subneting the
segments. Any one have any suggestions?
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| Sartan Dragonbane 2004-04-10, 9:25 pm |
| Subnet the segments.
A router creates a broadcast domain -- each broadcast domain requires it's
own subnet.
You created three broadcast domains (one between the routers, one on the far
end), if your network looks like what I think it does.
Also: there's a good chance your serial link between routers isn't
configured for DCE/DTE:
Your DCE sets the clock rate. The DCE side of a serial link is the female
end of a cable.
Your DTE is the male side of your serial link. You "plug in" to your
provider.
Here:
RouterA) ethernet 0 192.168.0.1 255.255.255.0
RouterA) serial 0 192.168.1.1 255.255.255.0
RouterB) serial 0 192.168.1.2 255.255.255.0
RouterB) ethernet 0 192.168.2.1 255.255.255.0
Ethernet Switch <--> RouterA<-->RouterB<-->Ethernet switch
RouterA(config)# interface ethernet 0
RouterA(config-if# ip address 192.168.0.1 255.255.255.0
RouterA(config-if# no shutdown
RouterA(config-if# interface serial 0
RouterA(config-if# ip address 192.168.1.1 255.255.255.0
RouterA(config-if# clockrate 56000
RouterA(config-if# no shutdown
RouterA(config-if# router rip
RouterA(config-router# network 192.168.0.0
RouterA(config-router# network 192.168.1.0
RouterB(config# interface ethernet 0
RouterB(config-if# ip address 192.168.2.1 255.255.255.0
RouterB(config-if# no shutdown
RouterB(config-if# interface serial 0
RouterB(config-if# ip address 192.168.1.2 255.255.255.0
RouterB(config-if# no shutdown
RouterB(config-if# router rip
RouterB(config-router# network 192.168.1.0
RouterB(config-router# network 192.168.2.0
"Howard Huntley" <hhuntleyjr@comcast.net> wrote in message
news:8m1h701hj293f4mnuovdjk2iv
opf2s0pmo@4ax.com...
> I have two routers-switch combinations in my LAB that I want to use
> the two serial ports to connect the two routers together on the same
> network. I have tried every kind of routing table and other
> configuration which has failed. I have not tried subneting the
> segments. Any one have any suggestions?
>
| |
| smrkdown 2004-04-10, 10:54 pm |
| The easiest way is to get a six dollar DCE/DTE crossover cable off of ebay and connect the routers back-to-back. Then just implement your IP addressing scheme and provide clocking on the DCE end of the cable. | |
| Howard Huntley 2004-04-23, 7:25 pm |
| Thank you very much for your help!
The configuration I have on the switch/routers is shown below. I can
key in the IP address of the serial attached routers and go between
the two routers(maybe Telnet). I can ping each end of the DTE/DCE
connection but I can not ping eather of the switch interfaces or
devices attached to the switches or the network. These (WS-X3011)2503
routers are connected to the back plane of a Catalyst 3200 switch with
6 network cards installed in each of the 3 switches.
Cat3200 Ethernet address = 192.168.0.40
Cis2503 e0= 192.168.0.100
s0= 0.0.0.0
s1= 192.168.2.100
Cat3200a Ethernet address = 192.168.0.45
Cis2503a e0= 192.168.0.100
s0= 192.168.2.101
s1= 0.0.0.0
Cat3200 Ethernet address = 192.168.0.46
No router installed
"Sartan Dragonbane" <NOSPAMHERE@YOUMOMMA.NULL.COM> wrote:
>Subnet the segments.
>
>A router creates a broadcast domain -- each broadcast domain requires it's
>own subnet.
>You created three broadcast domains (one between the routers, one on the far
>end), if your network looks like what I think it does.
>Also: there's a good chance your serial link between routers isn't
>configured for DCE/DTE:
>
>Your DCE sets the clock rate. The DCE side of a serial link is the female
>end of a cable.
>Your DTE is the male side of your serial link. You "plug in" to your
>provider.
>
>
>
>Here:
>RouterA) ethernet 0 192.168.0.1 255.255.255.0
>RouterA) serial 0 192.168.1.1 255.255.255.0
>RouterB) serial 0 192.168.1.2 255.255.255.0
>RouterB) ethernet 0 192.168.2.1 255.255.255.0
>
>Ethernet Switch <--> RouterA<-->RouterB<-->Ethernet switch
>
>RouterA(config)# interface ethernet 0
>RouterA(config-if# ip address 192.168.0.1 255.255.255.0
>RouterA(config-if# no shutdown
>RouterA(config-if# interface serial 0
>RouterA(config-if# ip address 192.168.1.1 255.255.255.0
>RouterA(config-if# clockrate 56000
>RouterA(config-if# no shutdown
>RouterA(config-if# router rip
>RouterA(config-router# network 192.168.0.0
>RouterA(config-router# network 192.168.1.0
>
>RouterB(config# interface ethernet 0
>RouterB(config-if# ip address 192.168.2.1 255.255.255.0
>RouterB(config-if# no shutdown
>RouterB(config-if# interface serial 0
>RouterB(config-if# ip address 192.168.1.2 255.255.255.0
>RouterB(config-if# no shutdown
>RouterB(config-if# router rip
>RouterB(config-router# network 192.168.1.0
>RouterB(config-router# network 192.168.2.0
>
>
>"Howard Huntley" <hhuntleyjr@comcast.net> wrote in message
> news:8m1h701hj293f4mnuovdjk2iv
opf2s0pmo@4ax.com...
>
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