From: Yakout Esmat (yesmat@xxxxxxxxxxxxxx)
Date: Mon Jul 15 2002 - 21:10:07 GMT-3
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
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