From: Nodir Nazarov (nodir@xxxxxxxxxxxx)
Date: Wed Jan 24 2001 - 22:13:44 GMT-3
Stephen, here is config for R1:
sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R1
!
enable secret 5 xxxxxxxxxxxxxxxxxxxxx
!
ip subnet-zero
!
process-max-time 200
!
no ip directed-broadcast
!
interface FastEthernet0/0
no ip address
no ip directed-broadcast
speed 10
full-duplex
no cdp enable
!
interface FastEthernet0/0.1
encapsulation isl 1
ip address x.x.x.x 255.255.255.252
no ip redirects
no ip directed-broadcast
!
interface Serial0/0
ip address 192.168.1.2 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0/0
no ip http server
!
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
password xxxxxxxxxx
login
!
!
no scheduler allocate
end
And here is R2 (just related fragments):
!
controller T3 1/0
clock source line
....
t1 8 channel-group 0 timeslots 1-24
....
!
interface Serial1/0/8:0
ip address 192.168.1.1 255.255.255.0
no ip route-cache
fair-queue 64 16 0
!
Again, interfaces are up/up. Unfortunately I can't get debugs from R1 (I
have access to R2 and I had to dispatch somebody to get "sh tech" for TAC
and config screens) but the debug below tells that there is no
encapsulation problems (I am getting packets on R2 and sending from R2 on
proper interface).
Also I added another site (R3) on another channel of DS3 - same story. CDP
shows up, all possible BERT tests on serial are fine. Then I decided to
change IOS on 7206vxr from 12.0(7) to 12.1(6) - didn't help. Played with
different switchings, tryed to do process swithing only - no results.
At this moment I am thinking to blame 7206 router, but what exactly ? It's
not easy to swap the box for test only..Not even an idea what went wrong.
Nodir
On Wed, 24 Jan 2001, Stephen Masraum wrote:
> First thoughts are a layer 3 issue. If CDP is working and does see the
> router at the other end and not some other router (have seen this when a
> company is turning up multiple links between multiple sites, telco gets the
> sites wrong and the connections aren't going where they should be) then we
> know layer 2 is working. It would be nice to have debugs from both sides
> (pinger and pingee simultaneously) when doing a ping. That may help. I
> have seen what at first appears to be a good setup give a sending going one
> way and an "encapsulation failed" going the other.
> Good Luck,
>
> Steve
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Nodir Nazarov
> Sent: Monday, January 22, 2001 3:43 PM
> To: ccielab@groupstudy.com
> Subject: weird, weird, weird simple connection
>
>
>
> Hello, I need help in supposedly simplest configuration.
>
> I have 2 sites connected via T1.
>
>
> R1<------------------>R2,
> 192.168.1.2 192.168.1.1
>
> Where R1 has T1 and R2 has T1 channel in DS3. R1 - c2620. R2 - 7206vxr.I
> have been doing similar scenario many many times and had no problem. This
> time however I see both serials up/up but I can't ping. When I ping from
> R2 to R1 this is what I got on R2:
>
> 15w3d: IP: s=192.168.1.1 (local), d=192.168.1.2 (Serial1/0/8:0), len 100,
> sending.
> 15w3d: IP: s=192.168.1.1 (local), d=192.168.1.2 (Serial1/0/8:0), len 100,
> sending.
> 15w3d: IP: s=192.168.1.1 (local), d=192.168.1.2 (Serial1/0/8:0), len 100,
> sending.
>
> When I ask to ping from R1 to R2 I see on R2:
>
>
> 15w3d: IP: s=192.168.1.2 (Serial1/0/8:0), d=192.168.1.1 (Serial1/0/8:0),
> len 100, rcvd 3
> 15w3d: IP: s=192.168.1.1 (local), d=192.168.1.2 (Serial1/0/8:0), len 100,
> sending
> 15w3d: IP: s=192.168.1.2 (Serial1/0/8:0), d=192.168.1.1 (Serial1/0/8:0),
> len 100, rcvd 3
> 15w3d: IP: s=192.168.1.1 (local), d=192.168.1.2 (Serial1/0/8:0), len 100,
> sending
>
> But no success. On both interfaces - no errors at all. I can see the
> routers through cdp. Encapsulation on both ends - hdlc. No access lists at
> all, vanilla configuration.
>
> I know you will ask details about the other end, but all it has is:
>
> int se 0/0
> ip address 192.168.1.2 255.255.255.0
>
> I am afraid to get something like this on the lab. Aren't you ??
>
> Nodir
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:27:43 GMT-3