Dynamic routing issue

[Bruno Silva]

Hello,

well, my question is: I have one central route (Cisco Catalyst 3750G-48TS-S) and twenty Switch with layer three ios (Cisco 3560G-24) conected in star topology....

What i want to know is, how central router can communicate with just another router (Cisco 1841) that is behind any 3560G layer three switch?

the cisco 1841 is always the same router that could be behind any other cisco 3560G switch.

Thanks a lot for your patience!

Bruno

[Bruno Silva]

The server that i'm trying to ping from is 192.168.152.30/24. Local vlan 110 on 3560 side.

i'll need a EEM on184, or not? To try if SVI wimax interface ping one of 3560 fixed stations....

The problem is i have to add a static route on 3560 to get wan of 1841 and i don´t know how

[John Blakley]

I don't think eem is going to help you. I thought the end goal, correct me if I'm wrong, was then when the fixed station responds, you want the network statement placed into eigrp on the 3560 at the FIXED site. If that's the case, running eem on the 1841 isn't going to help you because you can't modify remote devices with it as far as I know.

That being said, we're back to step 1. You need to determine when the router is responding from the fixed side. The only way to do that without eigrp is to use static routes on the 3560 and the 1841.

The static route on the 3560 is going to be the same as on the router: "ip route <1841 wan ip> 255.255.255.255 "

That's not going to help with your script though. The script is to put the network statement on the 3560 when the 1841 wan address starts to respond. The static routes are just to help you see the router without having a neighborship with eigrp or learning that route from somewhere else. Once the server can ping the 1841 wan interface, it will connect to the 3560 and add the network statement for you in the eigrp process.

If you want help with static routes, I'm going to need all IP addresses between the following devices:

(lan)1841(wan)(lan)wimax(wan)       (wan)fixed wimax(lan)(vlan)3560)

I need the addresses for the lan and wan side of the above devices and should be able to come up with some static routes.

HTH,
John

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[Bruno Silva]

Yep, the main goal it's when the fixed station responds, place the network statement into eigrp on the 3560 at the FIXED site.

Is this what you're asking for?

192.168.144.0/24 ---- <1841> ---- 10.10.51.1/32 ----- WIMAX Radio ------- 10.10.51.12/32 ------ <3560> ----- 192.168.152.0/24

When wimax equipment connects i have an VLAN established between 3560 and router and i can ping from 10.10.51.1/24 to 10.10.51.12/24 or vice versa.

The problem is, when i try to run script on server with 192.168.152.31/32 IP i can't ping mobile WAN or even SVI 501 of router

[John Blakley]

Yes, so you'll need a static oute on the 1841:

On the 1841:

ip route 192.168.152.0 255.255.255.0 10.10.51.12

On the server, you should have a default route pointing to the switch. The 3560 should have an svi associated to the wan interfaces of the 1841 since your wimax is bridging all of your traffic, and technically it only has a lan side address for management.

HTH,
John

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[Bruno Silva]

On the server i'll, on windows, to do... "route add 10.10.51.0 mask 255.255.255.0 192.168.152.1", that's it?

On the 1841 i had to have 20 static routes, one per each fixed station, no?

Summarizing, i'll have:

On each 1841, twenty static routes pointig to each fixed station

On each server from 3560 side, i'll have 8 "route add". One per each mobile 184 router

[John Blakley]

Your server should have a default route for anything that's not on its local subnet. If it doesn't, you will need to add the above.

*** Edit ***

If your default route points to anything other than the 3560, you will need to add this route to your windows server.

HTH,
John

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[Bruno Silva]

Each server rountig configuration:

route add 10.10.51.0 mask 255.255.255.0 192.168.152.1

route add 10.10.52.0 mask 255.255.255.0 192.168.152.1

route add 10.10.53.0 mask 255.255.255.0 192.168.152.1

route add 10.10.54.0 mask 255.255.255.0 192.168.152.1

route add 10.10.55.0 mask 255.255.255.0 192.168.152.1

route add 10.10.56.0 mask 255.255.255.0 192.168.152.1

route add 10.10.57.0 mask 255.255.255.0 192.168.152.1

route add 10.10.58.0 mask 255.255.255.0 192.168.152.1

Each 1841 mobile router (#1 example):

ip route 192.168.130.0 255.255.255.0 10.10.51.10

ip route 192.168.131.0 255.255.255.0 10.10.51.11

ip route 192.168.132.0 255.255.255.0 10.10.51.12

ip route 192.168.133.0 255.255.255.0 10.10.51.13

ip route 192.168.134.0 255.255.255.0 10.10.51.14

ip route 192.168.135.0 255.255.255.0 10.10.51.15

ip route 192.168.136.0 255.255.255.0 10.10.51.16

ip route 192.168.137.0 255.255.255.0 10.10.51.17

ip route 192.168.138.0 255.255.255.0 10.10.51.18

ip route 192.168.139.0 255.255.255.0 10.10.51.19

ip route 192.168.140.0 255.255.255.0 10.10.51.20

ip route 192.168.141.0 255.255.255.0 10.10.51.21

ip route 192.168.142.0 255.255.255.0 10.10.51.22

ip route 192.168.143.0 255.255.255.0 10.10.51.23

ip route 192.168.152.0 255.255.255.0 10.10.51.24

ip route 192.168.153.0 255.255.255.0 10.10.51.25

ip route 192.168.154.0 255.255.255.0 10.10.51.26

ip route 192.168.155.0 255.255.255.0 10.10.51.27

ip route 192.168.156.0 255.255.255.0 10.10.51.28

ip route 192.168.157.0 255.255.255.0 10.10.51.29

[John Blakley]

Bruno,

Why do you have so many statics on the router? How many servers will you be running the script from? Do you have a server in each 192.168.1xx.0 subnet?

HTH,
John

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[Bruno Silva]

Yap....

I have a server on each 3560 switch location.

[John Blakley]

The static routes look correct as long as you've covered all bases....I would make the change only on a single router and then test the concept. Don't change everything before you test....

HTH,
John

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[Bruno Silva]

I don´t understand.. Are you saying to me to don´t change every routers and switch before test? ok, ok!

[John Blakley]

Yeah, just test one site because if it doesn't work the way that you want, or expect, then you don't have to worry about going back to remove the new configuration off all of the routers.

HTH,
John

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[Bruno Silva]

Yeh, ok then! YOu're rigth!

Well John.... thanks a lot for your time and endurance/tolerance, i don´t know how to retribute and how to thank you even more!

If all this conversation and discussion have results, and i hope so, i'll bring you up the good news!

Bruno

[John Blakley]

Thanks Bruno! Good luck

HTH,
John

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[Bruno Silva]

Just one more issue, if isn´t abuse from your good will...

on 1841 router, i have to configure vpn to a remote site.... but wimax connection is prioritary but if it's not accessible how can i configura 1841 to get out from 3g connection?

with tracks?