Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

DDR on synchronous serial line - it seems, DDR not work

Dear Sir!

I've add ip route 1.1.1.2 255.255.255.255 serial0 on R1 &

ip route 1.1.1.1 255.255.255.255 serial0 On R2

Then I turned on debug ip packet detail & used extended ping to ping 1.1.1.2

from R1's s0 interface. This output show below:

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, sending

ICMP type=8, code=0

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, encapsulation fai

led

ICMP type=8, code=0.

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, sending

ICMP type=8, code=0

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, encapsulation fai

led

ICMP type=8, code=0.

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, sending

ICMP type=8, code=0

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, encapsulation fai

led

ICMP type=8, code=0.

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, sending

ICMP type=8, code=0

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, encapsulation fai

led

ICMP type=8, code=0.

IP: s=192.168.1.34 (Serial0/0), d=224.0.0.9, len 192, rcvd 2

UDP src=520, dst=520

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, sending

ICMP type=8, code=0

IP: s=1.1.1.1 (local), d=1.1.1.2 (Serial0/1), len 100, encapsulation fai

led

ICMP type=8, code=0.

Success rate is 0 percent (0/5)

R1#

What it means?

Best regards,

Nick

2 REPLIES
New Member

Re: DDR on synchronous serial line - it seems, DDR not work

It seems you are already getting good help with this.

For what its worth. The Encap fail is - the router knowns which interface to use but does not know how.

My guess is that because you are using dialer in-band BUT with no Phone # in your config. The Phycical interface is Not working as a dial interface in this case. - Perhaps by adding as Dialer interface this may get around your problem Here is a URL of a similar setup (Except its Multilink). Using Legacy Dialer Interface This should work for you -

http://www.cisco.com/warp/customer/793/access_dial/pppmultilink.html

New Member

Re: DDR on synchronous serial line - it seems, DDR not work

Dear Sir!

Yes, I made sure, that DDR works on sync serial correctly,

only if 'ppp multilink' command configured on sync serial interface

Best regards,

Nick

185
Views
0
Helpful
2
Replies
CreatePlease login to create content