From: Brian Dennis (brian@xxxxxx)
Date: Mon Jul 15 2002 - 22:39:37 GMT-3
Mamoor,
Did you actually try this in a lab and verify that it didn't work? Works
in my lab. See below.
Brian Dennis, CCIE #2210 (R&S/ISP Dial)
<R2>
interface BRI0
ip address 192.168.1.2 255.255.255.0
dialer map ip 10.1.1.1 2029
dialer map ip 192.168.1.6 broadcast 2029
dialer-group 1
isdn switch-type basic-ni
isdn spid1 2028
!
ip route 0.0.0.0 0.0.0.0 BRI0
!
dialer-list 1 protocol ip permit
!
</R2>
<R6>
interface Loopback0
ip address 10.1.1.1 255.255.255.0
!
interface BRI0
ip address 192.168.1.6 255.255.255.0
dialer map ip 192.168.1.2 broadcast 2028
dialer-group 1
isdn switch-type basic-ni
isdn spid1 2029
!
dialer-list 1 protocol ip permit
</6>
R2#ping 10.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms
R2#
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ahmed Mamoor Amimi
Sent: Monday, July 15, 2002 6:47 PM
To: Yakout Esmat; Brian Dennis; 'Groupstudy'
Subject: Re: Default route over ISDN
it will not work either that way by putting the map in local. u surely
need
to use the dialer profile or use dialer string if pointing to the bri
interface
-Mamoor
----- Original Message -----
From: Yakout Esmat <yesmat@iprimus.com.au>
To: Brian Dennis <brian@5g.net>; 'Groupstudy' <ccielab@groupstudy.com>
Sent: Tuesday, July 16, 2002 5:10 AM
Subject: RE: Default route over ISDN
> Brian,
>
> I see the logic behind it, and am sure that if I put another mapping
> statement in there it should work, I will try that and post the
results.
>
> Or maybe if I use dialer string instead of dialer map.
>
> CHeers
> yakout
>
> -----Original Message-----
> From: Brian Dennis [mailto:brian@5g.net]
> Sent: Tuesday, July 16, 2002 5:51 AM
> To: 'Yakout esmat'; 'Groupstudy'
> Subject: RE: Default route over ISDN
>
>
> Think about it like this. If you tell the router using the "ip route
> 0.0.0.0 0.0.0.0 bri0" command that all networks that aren't explicitly
> in the routing table are directly connected to BRI0, why would you
> expect the router to send them to 192.168.1.1?
>
> With the default route pointing to the interface the router wants to
> send the packet directly to address 10.1.1.1 (the packet's
destination).
> Since you don't have a dialer map to the 10.1.1.1 address you are
> getting the encapsulation failed messages. When you point the default
to
> the 192.168.1.1 address the router uses the 192.168.1.1 dialer map to
> get to it. As a side note you could also put a dialer map to the
> 10.1.1.1 address and you would have been able to ping it with the
> default route pointing to the BRI0 interface.
>
> What I recommend you doing is getting a "sniffer" and doing this on an
> Ethernet network. Try pointing a static route to an interface and try
> pointing a static route to an IP address of another router. You'll be
> able to see the difference in who the router ARPs for.
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial)
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Yakout esmat
> Sent: Monday, July 15, 2002 7:01 AM
> To: Groupstudy
> Subject: Default route over ISDN
>
> Any body aware of this problem..
>
> Scenario:
>
> 10.1.1.1/24--[R1]------(192.168.1.0/24)-----[R2]----
> ISDN
>
> 1) R2 is configured with a static default route
>
> Problem:
>
> 1) If the default static route on R2 is pointing to BRI0 interface "ip
> route
> 0.0.0.0 0.0.0.0 bri0", R2 can't ping 10.1.1.1 on R1. Getting
> "encapsulation
> failed" error when debuging ip packets, and R2 can't initiate a dial.
>
> 2) If I cahnge the default to point to next hop instead "ip route
> 0.0.0.0
> 0.0.0.0 192.168.1.1", every thing is sweet
>
> IOS 12.1, legacy ISDN with single dialer map statement is used, IP
> classless
> is on...
>
> I must be missing some thing.
>
> Thanks
>
> Yakout
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:31 GMT-3