Re: serial back-to-back with dialer interface

From: Bit Gossip (bit.gossip@chello.nl)
Date: Sat Sep 08 2007 - 13:37:55 ART


Hi Joseph,
why would I ever need the neighbor route? Is the connected not enough? It
looks great to me even without neighbor route....
Bit.

R2#show run

Building configuration...
interface Serial4/1
 no ip address
 dialer in-band
 dialer pool-member 1
 serial restart-delay 0
 pulse-time 1
end
!
interface Dialer1
 ip address 192.168.0.1 255.255.255.0
 dialer pool 1
 dialer idle-timeout 0
 dialer persistent
end

R2#show ip route
C 192.168.0.0/24 is directly connected, Dialer1

R2#ping 192.168.0.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R2#
  ----- Original Message -----
  From: Joseph Saad
  To: Shine Joseph
  Cc: Bit Gossip ; ccielab@groupstudy.com
  Sent: Saturday, September 08, 2007 5:13 AM
  Subject: Re: serial back-to-back with dialer interface

  Yes, I tried it.

  The only issue with HDLC (which ppp does automatically) is that it doesn't
install a route to the neighboring router's interface.

  From a lab perspective, I fixed that with a static route, which wouldn't be
acceptable in general in the exam.

  ppp does this automatically by installing a connnected route as part of ppp
negotiation.

  Joseph

  On 9/8/07, Shine Joseph < shinepjoseph@iprimus.com.au> wrote:
    Joseph,

    Have you tried that solution? I couldn't get the loopback solution on to
the
    hdlc link. It works on a ppp link.

    Regards,
    Shine

    -----Original Message-----
    From: nobody@groupstudy.com [mailto:nobody@groupstudy.com ] On Behalf Of
    Joseph Saad
    Sent: Saturday, 8 September 2007 7:53 AM
    To: Shine Joseph
    Cc: Bit Gossip; ccielab@groupstudy.com
    Subject: Re: serial back-to-back with dialer interface

    Why not assign the IP to a loopback xx interface and use ip unnumbered
    lo xxon the serial interafce?

    On 9/7/07, Shine Joseph <shinepjoseph@iprimus.com.au > wrote:
>
> Bit,
>
> I got your config working. If I don't add the dialer persistent command
in
> the dialer interface, the interface is flapping.
>
>
> R1#
> interface Serial0/1
> no ip address
> dialer in-band
> dialer pool-member 1
> dialer-group 1
> no dce-terminal-timing-enable
> pulse-time 1
>
> interface Dialer1
> ip address 172.16.31.1 255.255.255.0
> dialer pool 1
> dialer-group 1
> dialer persistent
>
> R3#
> interface Serial1/0
> no ip address
> dialer in-band
> dialer pool-member 1
> dialer-group 1
> clock rate 64000
> no dce-terminal-timing-enable
> pulse-time 1
> interface Dialer1
> ip address 172.16.31.3 255.255.255.0
> dialer pool 1
> dialer-group 1
> dialer persistent
>
> R3(config-if)#do ping 172.16.31.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 172.16.31.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 28/35/60 ms
>
> R1(config-if)#do ping 172.16.31.3
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 172.16.31.3, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 28/33/52 ms
>
> HTH,
> Shine
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com ] On Behalf
Of
> Bit
> Gossip
> Sent: Friday, 7 September 2007 9:04 PM
> To: ccielab@groupstudy.com
> Subject: serial back-to-back with dialer interface
>
> Experts,
> I think this could be possible somehow but I've become quite rusty with
> DDR
>
> R4 and R5 are connected back-to-back with HDLC encapsulation
>
> That would be nice and easy, but I am not allowed to assign the IP
address
> directly to the serial interface nor change interface encapsulation.
>
> I was thinking to associate them with a dialer interface and this is as
> far
> as
> I could go ....
>
> Please help!
> Bit
>
>
> R5
> interface Serial0/1
> no ip address
> dialer in-band
> dialer pool-member 1
> clock rate 128000
> pulse-time 1
> !
> interface Dialer1
> ip address 145.3.45.5 255.255.255.0
> dialer pool 1
> dialer-group 1
> !
> dialer-list 1 protocol ip permit
> !
>
> R5#ping 145.3.45.4
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 145.3.45.4, timeout is 2 seconds:
>
> *Mar 1 03:17:21.607: Di1 DDR: Cannot place call, no dialer string set.
>
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