From: micsoniu@telus.net
Date: Fri Mar 11 2005 - 14:25:24 GMT-3
I think that your configuration should look like this:
Frame_R4#
!
interface BRI0
ip address 187.1.45.4 255.255.255.0
encapsulation ppp
dialer map ip 187.1.45.5 name Rack1R5 broadcast 2122
dialer-group 1
isdn switch-type basic-ni
isdn spid1 1211
end
!
dialer-list 1 protocol ip permit
Rack1R5#
!
interface BRI0/0
ip address 187.1.45.5 255.255.255.0
encapsulation ppp
dialer idle-timeout 0
dialer map ip 187.1.45.4 name Frame_R4 broadcast 1211
isdn switch-type basic-ni
isdn spid1 2122
end
The phone number in the dialer map of Frame_R4 ahould be 2122 and NOT 2222
Not having the dialer-group statement on R5 will ensure that R5 cannot initate
the call.
However you still need a L3/L2 resolution.
On the other hand, try a router reboot after correcting the phone number on
the dialer map on the Frame router.
I had the same experience
Quoting simon hart <simon.hart@btinternet.com>:
> Sorry the config should look like this - still same problem (Frame_R4
> instead of Rack1R5 on the dialer map)
>
> S.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of simon
> hart
> Sent: 11 March 2005 17:02
> To: Group Study
> Subject: ISDN problem
>
>
> Hi all,
>
> I am having a bit of a nightmare with some simple ISDN configuration: I am
> trying to establish a connection between two routers R4 and R5. R5 should
> not be able to initiate a call - only R4. I am using legacy DDR, configs
> below
>
> Frame_R4#
> !
> interface BRI0
> ip address 187.1.45.4 255.255.255.0
> encapsulation ppp
> dialer map ip 187.1.45.5 name Rack1R5 broadcast 2222
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 1211
> end
> !
> dialer-list 1 protocol ip permit
>
>
>
> Rack1R5#
> !
> interface BRI0/0
> ip address 187.1.45.5 255.255.255.0
> encapsulation ppp
> dialer idle-timeout 0
> dialer map ip 187.1.45.4 name Frame_R4 broadcast
> isdn switch-type basic-ni
> isdn spid1 2122
> end
>
>
> If I ping from Frame_R4 then the ISDN line is brought up but no response to
> the pings. If I debug IP packet on R5 I notice that I have an encapsulation
> failure:
> Rack1R5#
> *Mar 1 07:52:46.460: IP: s=187.1.45.4 (BRI0/0), d=187.1.45.5 (BRI0/0), len
> 100, rcvd 3
> *Mar 1 07:52:46.460: IP: s=187.1.45.5 (local), d=187.1.45.4 (BRI0/0), len
> 100, sending
> *Mar 1 07:52:46.460: IP: s=187.1.45.5 (local), d=187.1.45.4 (BRI0/0), len
> 100, encapsulation failed
> Rack1R5#
> *Mar 1 07:52:48.459: IP: s=187.1.45.4 (BRI0/0), d=187.1.45.5 (BRI0/0), len
> 100, rcvd 3
> *Mar 1 07:52:48.459: IP: s=187.1.45.5 (local), d=187.1.45.4 (BRI0/0), len
> 100, sending
> *Mar 1 07:52:48.463: IP: s=187.1.45.5 (local), d=187.1.45.4 (BRI0/0), len
> 100, encapsulation failed
>
> As you can see it is showing an encapsulation failure, however the map looks
> fine and the config is exactly as dictated within the solution guide of the
> Internetwork expert solution guide
>
> Any comments most welcome
>
> S.
>
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