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New Member

config 3550

I have a 2610 with IP 10.10.120.1 router and 3550 series switch. I have configured Vlan on 3550

(interface Vlan1

ip address 10.10.120.10 255.255.255.240)

and i have configured port f0/4 with IP (IP block 10.10.121.188/30)

(interface FastEthernet0/4

no switchport

ip address 10.10.121.189 255.255.255.252

no ip route-cache)

also given default route -

ip route 0.0.0.0 0.0.0.0 10.10.120.1

but when i am connecting laptop with IP 10.10.121.190/30 to 3550 i am not able to ping 10.10.120.1

but if i ping it from 3550 i am able to ping.

on 2610 i have routed - ip route 10.10.121.188 255.255.255.252 10.10.120.10

Please help. what more config i required to connect 2610 with 3550

12 REPLIES
Hall of Fame Super Bronze

Re: config 3550

What's the default gateway on the laptop ?

It should be 10.10.121.189

Please rate helpful posts.

Thanks

New Member

Re: config 3550

yes it is 10.10.121.189

from 2610 router i am able to ping 10.10.120.1 but not able to ping 10.10.121.189. Means my connectivity is not ok. i have routed the route on 2610

Not able to find solution.

Hall of Fame Super Bronze

Re: config 3550

So routing seems not to be running on the 3550. Can you please post the SH VER and SH RUN output from the 3550 ?

Thanks

Re: config 3550

Hi,

Configure 'ip routing' in the global config mode and see if you can ping the 2610 from the laptop.

HTH,

Sundar

Blue

Re: config 3550

we need more config info. please post what you can.

from what i see the configuration is not completed.

i do not see what port the 2610 connects to the 3550 with.

i do not see a trunk to the 3550 from the 2610 if the link is to carry multiple vlan traffic.

it looks as if your 2610 is configured for 10.10.120.0/29 only. how does the router know of 10.10.121.188/30 ? i dont see the proper routes or direct connections for the router to communicate with 10.10.121.188/30.

it looks as if your 3550 is configured for 10.10.121.188/30 only. how does the switch know of 10.10.120.0/29 ? i dont see the proper routers or direct connections for the switch to communicate with 10.10.120.188/30.

post your config and we can tell you what to add, remove or whatever else may be needed.

New Member

Re: config 3550

i am forwarding the 2610 and 3550 run config

Re: config 3550

Hi,

Your configuration looks good. Can you check the IP configuration on your laptop and there could easily be a typo like, instead of typing the gateway as 10.10.121.189 you could have plugged in 10.10.121.89

If you don't find anything wrong with the laptop configuration then proceed with the following troubleshooting.

1. Ping the 10.10.121.89 from the laptop. If it doesn't work then you have a physical layer problem or ip configuration error. If this works go to step2.

2. Ping 10.10.120.10 from the laptop. If it doesn't work then there's a IP configuration error on the laptop or switch. If this works then go to step3.

3. Ping 10.10.120.1 from the laptop. If it doesn't work then the problem is with configuration on the router as you already stated you are able to ping the router from the switch.

Hope that helps!

Regards,

Sundar

Hall of Fame Super Bronze

Re: config 3550

I don't see any 'ip routing' command in the 3550.

If you issue 'show ip route', do you see any routing table on the 3550 ?

Please rate helpful posts.

Thanks

New Member

Re: config 3550

Hi,

I read the question and wanted to know why is it that you have assigned the port an IP address. We do not wish to do any routing on the switch so please let the port be a L2 port. The switch port can be changed to L2 port by using the command "switchport". After this set the DG oln your laptop to the IP address 10.10.120.10 and you should be good to go from thereon.

Hope this helps !!!

Regards

Param

New Member

Re: config 3550

i want to connect IP base modem to 3550 switch. That's why i am testing this scenario.

But not getting the connectivity through.

My down path will be 2610 to 3550 to my Modem and up path Vise-versa

New Member

Re: config 3550

hi guys thanks for the help, i got my mistake, its rectify now... i have not enabled "ip routing" command on 35550 switch .

Thank's for the support.

New Member

Re: config 3550

Hi,

In this case too you need not make the port on the 3550 as a L3 port. You can assign an IP address to your Router interface and the switch SVI that you want to use and do a No shut on that interrace and all the devices in that SVI will get the connectivity.

Regards,

Param

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