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Can not see internet from 3rd router

Spydrt6953
Level 1
Level 1

http://img51.imageshack.us/img51/6829/networkh.png

I don not understand what is going on. From R1 I can ping out to the internet but from R2 I can ping 192.168.1.4; the R1's ethernet port and I can ping out to the switch it's connected to, but I can't reach the linksys at 192.168.1.1.

6 Replies 6

lgijssel
Level 9
Level 9

The network 10.10.10.0/30 is probably not known on the Linksys and S1.

Try using an extended ping with source address 172.168.1.1.

If this setup has been working, it will likely respond.

regards,

Leo

lgijssel wrote:

The network 10.10.10.0/30 is probably not known on the Linksys and S1.

Try using an extended ping with source address 172.168.1.1.

If this setup has been working, it will likely respond.

regards,

Leo

Like this?

R2#ping ip
Target IP address: 192.168.1.4
Extended commands [n]: y
Source address or interface: 172.168.1.1
Sending 5, 100-byte ICMP Echos to 192.168.1.4, timeout is 2 seconds:
Packet sent with a source address of 172.168.1.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/36/56 ms

R2#ping ip
Target IP address: 192.168.1.2

Extended commands [n]: y
Source address or interface: 172.168.1.1
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
Packet sent with a source address of 172.168.1.1
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 36/41/52 ms

R2#ping ip
Target IP address: 192.168.1.1
Extended commands [n]: y
Source address or interface: 172.168.1.1
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
Packet sent with a source address of 172.168.1.1
.....
Success rate is 0 percent (0/5)

This set up has not worked before, I am just setting it up. On thing I noticed was the linksys could not have NAT and RIP turned on at the same time. It was either/or so everything is static. I am a little confused about which router I should make the defualt gateways on. For R1 I have the Defualt gateway set as the linksys and I have R2's Default Gateway set to R1. Don't know if that is right or not.

Hi,

For R1 I have the Defualt gateway set as the linksys and I have R2's Default Gateway set to R1. Don't know if that is right or not.

Yes this is right

R2#ping ip
Target IP address: 192.168.1.1
Extended commands [n]: y
Source address or interface: 172.168.1.1
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
Packet sent with a source address of 172.168.1.1
.....
Success rate is 0 percent (0/5)

Which route is R2 taking to get to 192.168.1.1?  ---> show ip route 192.168.1.1

do the same on R1

if both take the default route as you configured then on linksys is which route points to 172.168.1.1 ?

Regards.

Alain.

Don't forget to rate helpful posts.

That is something I can't get to work. In the linksys I have tried to add a static route but no matter what combination of IP address/subnetmask I use a pop up keeps showing up as "Invaild static route"

Can you do a screen capture of the configuration of static route on linksys and maybe also of  routing config

did you do the sh ip route on R2 and R1?  So there is no route back in linksys?

Regards.

Alain.

Don't forget to rate helpful posts.

Spydrt6953
Level 1
Level 1

I finnaly got it to work! Props to linksys in making it a PITA. They could have just

said "Hey we don't understand VLSM, so we are going to use the default mask for that IP address" That would have been much more help than just "Invalid Static Route"

What I had to do was disable NAT (took me off the internet of course) and turn on rip, I went to R2 and pinged 192.168.1.1, it worked, so I went to the linksys and looked at the routing table and saw that it was only using the defalt mask and default network segments. All is good now. Such a learning experiance.