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Home > Archive > alt.certification.cisco > February 2004 > Cisco Router Setup Questions
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Cisco Router Setup Questions
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| Stephen Hughes 2004-02-21, 9:24 pm |
| Hi,
Recently i decided to increase my knowledge of cisco equipment so i
purchased for very little money 3x2500 series routers (2503, 2504 and a
2516) and a 1900 series catalyst switch. I also got 5 DCE and 5 DTE cables.
I also have 2 Aui adapters (one for the 1900 and one for the 2504 as it
doesnt have an ethernet port.
I setup my equipment in my workshop where i had the 2516 connected from
Serial0 (192.168.1.1) to the 2504 on Serial0 (192.168.1.2) *Using
DCE--->DTE*. I set the clock rate and the bandwidth and these 2 routers can
ping eachother.
I then attached the Aui adapter to the 2504 and took a crossover cable from
the 2504 to my adsl router which has an internal ip of 10.0.0.2 255.0.0.0. I
configured ethernet0 to have ip address 10.0.0.8 and issued the no shut. i
can successfully ping my adsl router from the 2504.
I wanted to be able to ping the router from my 2516 so i added a static
route...
Cisco2516# ip route 10.0.0.0 255.0.0.0 serial0 192.168.1.1
when i try to ping the adsl router i have no luck im afraid.
I know this is probably easily fixed and i would appreciate any help anyone
could offer.
Stephen Hughes
| |
| Bob by The Bay 2004-02-21, 10:24 pm |
| When setting up static routes you have to also create static routes in the
opposite direction so that the return traffic (in this case the ping (icmp
reply) can come back to the 2516 router.
Robert
"Stephen Hughes" <stephen@firenet.ws> wrote in message
news:c190kl$g87$1@sparta.btinternet.com...
> Hi,
>
> Recently i decided to increase my knowledge of cisco equipment so i
> purchased for very little money 3x2500 series routers (2503, 2504 and a
> 2516) and a 1900 series catalyst switch. I also got 5 DCE and 5 DTE
cables.
> I also have 2 Aui adapters (one for the 1900 and one for the 2504 as it
> doesnt have an ethernet port.
>
> I setup my equipment in my workshop where i had the 2516 connected from
> Serial0 (192.168.1.1) to the 2504 on Serial0 (192.168.1.2) *Using
> DCE--->DTE*. I set the clock rate and the bandwidth and these 2 routers
can
> ping eachother.
>
> I then attached the Aui adapter to the 2504 and took a crossover cable
from
> the 2504 to my adsl router which has an internal ip of 10.0.0.2 255.0.0.0.
I
> configured ethernet0 to have ip address 10.0.0.8 and issued the no shut. i
> can successfully ping my adsl router from the 2504.
>
> I wanted to be able to ping the router from my 2516 so i added a static
> route...
> Cisco2516# ip route 10.0.0.0 255.0.0.0 serial0 192.168.1.1
>
> when i try to ping the adsl router i have no luck im afraid.
>
> I know this is probably easily fixed and i would appreciate any help
anyone
> could offer.
>
> Stephen Hughes
>
>
| |
| Stephen Hughes 2004-02-22, 10:24 am |
| Robert,
Thankyou for the advice you have given me. I appreciate your time.
I have added what i think is the proper route back on the 2504.
2504(Config)# ip route 192.168.1.0 255.255.255.0 serial0 192.168.1.0
This still does not provide connectivity. Any further help is appreciated.
Stephen Hughes
"Bob by The Bay" <nospam@forthisposter.org> wrote in message
news qUZb.378794$na.568677@attbi_s04...
> When setting up static routes you have to also create static routes in the
> opposite direction so that the return traffic (in this case the ping (icmp
> reply) can come back to the 2516 router.
>
> Robert
>
> "Stephen Hughes" <stephen@firenet.ws> wrote in message
> news:c190kl$g87$1@sparta.btinternet.com...
> cables.
> can
> from
255.0.0.0.[color=blue]
> I
i[color=blue]
> anyone
>
>
| |
| Bob by The Bay 2004-02-22, 1:24 pm |
| Hi Stephen,
I took a closer look at this (thanks to your thorough description) and I
think you're almost there and just need an adjustment or 2.
The ip address at the end of your "ip route" command needs to be the address
of the next hop. That is, the 2516 should have:
"ip route 10.0.0.0 255.0.0.0 serial0 192.168.1.2"
and the 2504 should have:
"ip route 192.168.1.0 255.255.255.0 serial 0 192.168.1.1", although since
this is a directly connected network for the 2504, adding the static route
isn't really necessary because it's already in the routing table.
Where it is necessary is on the ADSL router since this router doesn't know
where the 192.168.1.0 network is. In effect, a route needs to be added on
the ADSL router that is equivilent to:
"ip route 192.168.1.0 255.255.255.0 10.0.0.8"
You may have to do a little digging to figure out how to add this route to
the ADSL router, but in my experience there is usually a way.
BTW, another acceptable format of the "ip route" command is shown above,
that is - without the interface. Alternatively, the command can also look
like this:
"ip route 10.0.0.0 255.0.0.0 serial0"
and this will work fine in lab situations, but it is better to alway use the
next hop address as you have done to avoid excessive ARPing and broadcast
traffic in real world implementations.
If you still find that there are throughput problems, be sure that no
access-list(s) are applied to the router interfaces (from a previous
configuration) that would act to filter out your traffic.
Good luck with your project,
Robert
"Stephen Hughes" <stephen@firenet.ws> wrote in message
news:c1agaa$58i$1@hercules.btinternet.com...
> Robert,
>
> Thankyou for the advice you have given me. I appreciate your time.
>
> I have added what i think is the proper route back on the 2504.
> 2504(Config)# ip route 192.168.1.0 255.255.255.0 serial0 192.168.1.0
>
> This still does not provide connectivity. Any further help is appreciated.
>
> Stephen Hughes
>
> "Bob by The Bay" <nospam@forthisposter.org> wrote in message
> newsqUZb.378794$na.568677@attbi_s04...
the[color=blue]
(icmp[color=blue]
a[color=blue]
it[color=blue]
from[color=blue]
routers[color=blue]
> 255.0.0.0.
shut.[color=blue]
> i
static[color=blue]
>
>
| |
| Stephen Hughes 2004-02-22, 6:24 pm |
| Robert,
You were absolutely right. It was my ADSL router causing the upset and i
have rectified the problem. Thanks for the help that led to this answer. I
have learnt alot even from these few posts.
I now have yet another router added into the mix now!
Thanks very much once again.
Stephen Hughes
"Bob by The Bay" <nospam@forthisposter.org> wrote in message
news:T56_b.35104$Xp.162515@attbi_s54...
> Hi Stephen,
> I took a closer look at this (thanks to your thorough description) and I
> think you're almost there and just need an adjustment or 2.
>
> The ip address at the end of your "ip route" command needs to be the
address
> of the next hop. That is, the 2516 should have:
>
> "ip route 10.0.0.0 255.0.0.0 serial0 192.168.1.2"
>
> and the 2504 should have:
>
> "ip route 192.168.1.0 255.255.255.0 serial 0 192.168.1.1", although since
> this is a directly connected network for the 2504, adding the static route
> isn't really necessary because it's already in the routing table.
>
> Where it is necessary is on the ADSL router since this router doesn't know
> where the 192.168.1.0 network is. In effect, a route needs to be added on
> the ADSL router that is equivilent to:
>
> "ip route 192.168.1.0 255.255.255.0 10.0.0.8"
>
> You may have to do a little digging to figure out how to add this route to
> the ADSL router, but in my experience there is usually a way.
>
> BTW, another acceptable format of the "ip route" command is shown above,
> that is - without the interface. Alternatively, the command can also look
> like this:
>
> "ip route 10.0.0.0 255.0.0.0 serial0"
>
> and this will work fine in lab situations, but it is better to alway use
the
> next hop address as you have done to avoid excessive ARPing and broadcast
> traffic in real world implementations.
>
> If you still find that there are throughput problems, be sure that no
> access-list(s) are applied to the router interfaces (from a previous
> configuration) that would act to filter out your traffic.
>
> Good luck with your project,
> Robert
>
>
> "Stephen Hughes" <stephen@firenet.ws> wrote in message
> news:c1agaa$58i$1@hercules.btinternet.com...
appreciated.[color=blue]
> the
> (icmp
and[color=blue]
> a
> it
> from
> routers
cable[color=blue]
> shut.
> static
>
>
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