From: kym blair (kymblair@xxxxxxxxxxx)
Date: Tue Oct 16 2001 - 07:37:33 GMT-3
Elias,
If your question is why you aren't able to ping across your back-to-back ATM
line without a switch, it's because you forgot the "atm clock internal" on
both sides. I haven't done it with voice, so I'm not sure how you should
map the IP addresses to the pvc, but with standard data, I successfully used
a config posted here last week on two ATM interfaces back-to-back:
Router A
interface atm 3/0
ip address 192.168.1.10 255.0.0.0
no keepalive
atm clock internal
pvc 1/35
protocol ip 192.168.1.20 broadcast
Router B
interface atm 3/0
ip address 192.168.1.20 255.0.0.0
no keepalive
atm clock internal
pvc 1/35
protocol ip 192.168.1.10 broadcast
Like frame relay DLCIs, you also need to map your own IP to the pvc if you
want to be able to ping yourself. I.e., add:
Router A
protocol ip 192.168.1.10 broadcast
Router B
protocol ip 192.168.1.20 broadcast
I then added a rate control statement to both sides ... something like
"nrt-xxx 56 28" (non real-time <something> with 56K peak and 28K average ...
I believe). My stream of pings really slowed down, as expected. I'm sure
voice has some rate controls too.
Sorry I don't have more experience with ATM, but I think this will answer
your basic question.
Kym
>From: Elias Udechime <euchime@yahoo.com>
>Reply-To: Elias Udechime <euchime@yahoo.com>
>To: ccielab@groupstudy.com
>Subject: OSPF Question
>Date: Mon, 15 Oct 2001 15:00:00 -0700 (PDT)
>
>all,
>
>Trying to creat WAN in my lab. There is PVC from
>router1 to router2.
>
>Here is the diagram.
>
>Laptop 10.23.206.188 (default gateway 10.23.206.122)
>---|-----
> |
> |
> |
> ---------e0 10.23.206.122/26
> (ROUTER1)
> atm3/0.203 192.168.1.22/30 PTP
> |
> |DS-3
> |
> ---------
> | |
> 10.17.22.2 | IGX |
> ---------
> |DS-3
> |
> -----------
> | |
> 10.17.22.3 | IGX |
> ------------
> |
> |OC-3
> |atm3/0.201 192.168.1.23
> ----------- PTP
> | |
> | Router 2 |
> ------------
>
>All boxes share a common catalyst3524 for Access
>server.
>
>Can ping in/out from Laptop to Router2 only when
>connected to the catalyst switch.
>
>Question: I was wondering why I cann't ping through
>without going through the switch? May be I am missing
>the switch technology theory (layer 2).
>
>Sample config below:
>Router1
>interface FastEthernet0/0
> ip address 10.23.206.122 255.255.255.192
> ip ospf network non-broadcast
> duplex auto
> speed auto
>
>interface ATM3/0.203 point-to-point
> ip address 192.168.1.22 255.255.255.252
> ip ospf network point-to-point
> pvc voice 0/203
>
>router ospf 1
>network 10.0.0.0 0.255.255.255 area 0
>network 192.168.0.0 0.0.255.255 area 0
>ip classless
>ip route 0.0.0.0 0.0.0.0 10.17.206.129
>ip route 10.0.0.0 255.0.0.0 10.17.206.129
>
>==============================================
>Router2
>interface Loopback0
> ip address 192.168.0.1 255.255.255.255
>!
>interface ATM3/0.201 point-to-point
> ip address 192.168.1.23 255.255.255.252
> ip ospf network point-to-point
> pvc voice 0/201
> class-vc rt-VBR
>
>interface FastEthernet0/0
> ip address 10.15.225.139 255.255.255.192
> duplex half
>
>router ospf 1
> network 10.0.0.0 0.255.255.255 area 0
> network 192.168.0.0 0.0.255.255 area 0
>!
>ip classless
>ip route 0.0.0.0 0.0.0.0 10.15.225.129
>
>
>Thanks for help in advance
>
>Elias
>
>
>
>
>
>
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