routing in same router issue

Answered Question
Jul 23rd, 2009

dear friends

i have really big issue, i'm almost new to cisco hardware, usually i do good things in packet tracer so i got a 1841 and HWIC-4ESW.

i configured on fa0/0 and on fa0/1

when i ping from a computer connected to 1.1 to the interface fa0/0 and fa0/1 it is ok

but when i try to ping a computer in the other network, i get nothin

I check access-lists and every thing and i created the network in packet tracer and it works there.

please help me

i used the console to configure the router, and never used the CD came with the router, is there and relation??

and i saw that i have (logging buffered 51200 warnings) is this also a problem?

do i have to restore tha factory? and how to do this

please help me, otherwise i'll get troubles with my boss

I have this problem too.
0 votes
Correct Answer by Richard Burts about 7 years 6 months ago


I have looked at the config that you posted and I do not see any particular issues in it. I would guess that the issue might be that the PCs do not have the correct default gateway configured. Do the PCs connected to the network of FastEthernet 0/0 have as their default gateway?



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Overall Rating: 2 (1 ratings)
Peter Paluch Thu, 07/23/2009 - 11:16


If you have a brand new 1841 router, it is preconfigured with a certain starting configuration. I assume it can interfere with your changes you have done using console.

I suggest you simply erase the existing stored configuration (using the "erase startup-config" command) and reload the router. Then try to configure it again.

Also, if you try to ping a PC in another network, make sure that the PC is not using any kind of firewall and that its TCP/IP settings are OK.

About the CD - no, you do not need to use it at all.



yasser_ja Thu, 07/23/2009 - 11:26

Thanks so much Mr.Peter

Actually, i can ping any PC using the router console or telnet session.

Only pinging from a PC is the problem.

here is it:

glen.grant Thu, 07/23/2009 - 11:28

If you are pinging any other pc do you have the windows firewall turned off , it will block ping by default .

yasser_ja Thu, 07/23/2009 - 11:45

Actually, there is a symantec endpoint protection antivirus with firewall.

i can ping all computers using computers in same subnetwork.

But i also tried to access shares by typing computer ip in RUN in the XP but nothing happened.

Correct Answer
Richard Burts Thu, 07/23/2009 - 12:48


I have looked at the config that you posted and I do not see any particular issues in it. I would guess that the issue might be that the PCs do not have the correct default gateway configured. Do the PCs connected to the network of FastEthernet 0/0 have as their default gateway?



yasser_ja Thu, 07/23/2009 - 12:54


This is my problem, every thing is fine as i studied and implemented in packet tracer.

Why i'm having this i don't know.

maybe i'll erase the config and start again, hope it works. If not, how do i check if the router came damaged to me or no problem in it? and what is this buffer warning?

Really really thanks for your time.

yasser_ja Fri, 07/24/2009 - 21:30

Please don't laugh at me OK.

I thing my problem is that i installed the router ok. After that i configured it OK. Then i configured my laptop. Then i used the cable comming to my office and i putted it in the router. and a made a cross over cable for my PC-Router.

After this all i tried to ping the router and it replys OK. The funny thing is that when i ping the computers on the other network and those computers has a gateway of, so this is the wornge right? i think that my problem is that i didn't change the gateway of computers to match the router's interface that connects to, becuase i'm lazy.

So, now i have another problem and it is:

the gateway is our 3.5 G router E960 from Huwawi. we get internet through this router only because we are in site.

How to share internet connection since this huwawi router don't have a gateway?

Please i need to finish this issue.

Thanks for all.

shrikant2u Thu, 07/23/2009 - 13:43

Yasser ,

Per your notes fa0/0 =

and fa0/1 =

However config you have posted shows

FastEthernet0/1 = (?!?)

FastEthernet0/0 =

My guess is messed ip address.



Richard Burts Thu, 07/23/2009 - 13:54


In your original post you say:"i saw that i have (logging buffered 51200 warnings) is this also a problem?". This is not a problem. This is fairly normal. This command controls the logging of messages to an internal buffer and sets the severity level to warnings. This is a normal behavior.



yasser_ja Thu, 07/23/2009 - 13:58


you are totally right about logging warnings.

"logging" i should to pay attention to that.

thank you very much.

please excuse me, i'm new and it will take some practice.

yasser_ja Thu, 07/23/2009 - 13:54

Sorry, i made little mistake.

Yes, the ips are



and the config in coputers are set along

with the interface that connects to.

Not a big issue.

The problem still than my router is not routing to onother network.

Like i said, every thing is perfect and the same router config i imported to packet tracer and it works. Maybe packet tracer is stupid or no capable of handling all commands.Or maybe i have a fualty router. Or maybe i have to erase and config again.

let us see on satarday.

If any one knows this issue, i'll be glad to hear suggestions.

Thank you all very much.

Again, what is this buffer warning? and how to remove it?

glen.grant Thu, 07/23/2009 - 16:23

You say this is a hwic 4 esw ? Is that where you are trying to run your subnet from . In the HWICS routed ports are not supported . You must create a layer 2 vlan in the vlan database and then create a corresponding layer 3 SVI for that vlan . you would then put the switchports into the correct vlan for the subnet . If you want 2 different subnets then you would have to create 2 layer 2 vlans in the vlan database and 2 layer 3 SVI's to support those vlans and then put the ports in the correct vlan. If you have put the address on the hwic port itself then that is not supported.

yasser_ja Thu, 07/23/2009 - 23:26

No my dear, i'm not using the HWIC at all and i removed it also.

Fine now, is there any way to check the packets are being moved inside the router?

I mean to monitor wether the router is routing the packets correctely or not.

scollins34 Sat, 07/25/2009 - 06:30

You must add a route to your Huwawi router stating finding the /24 gateway to use is the You have to routers in place and both routers need to know about the other. I would use rip v2

Cisco 2811

router rip

version 2




router rip

version 2


network internet access

yasser_ja Sat, 07/25/2009 - 21:52

Thanks, I think it is my mistake.

E960 router is a 3.5G only for internet access. No configurations exept in CGI by internet browser.

I tried to telnet it, but something like BUSYBOX or BESYBOX (I can't remmember) is comming. I don't know what is this.

By searching online I think that I need to configure NAT.

Is it true that NAT is my solution?

yasser_ja Sat, 07/25/2009 - 23:29

OK, finally i can ping my router using a PC in another network.

but why i can't ping websites and can't access internet???

When ip ping a website, i get the ip of it but i get no reply.

Note: our internet is a 3.5G via our mobile Provider in UAE in Dubai.

And we don't have a real IP or a Fix one. GOT IT???

How to fix my last issue. Please help, i'm almost understand everything

yasser_ja Sat, 07/25/2009 - 23:51



Finally I got what I want.

My final mistake is that i'm pinging then I got (fa0/0) my computer connected to.

So I added (ip route

After that got destination unreachable.

Then I thought maybe the LAN MAC filter in our 3.5g router has something to do with this.

So I turned the firewall of the 3.5g router off.

But I still getting destination unreachable.

But when I pinged it really worked.

It seems that stupid hotmail don't allow ICMP.

But at least I got what I want, and i understanded it very well.

Hope to see you guys and the best to you all.

jimmysands73_2 Sun, 07/26/2009 - 21:56

Glad to hear. Remember you can not always use ping'g by DNS name as a troubleshooting technique. Most times its fine, but everynow and then it bites you. When in doubt, I ping Earthlinks DNS server at


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