From: Hobbs (deadheadblues@gmail.com)
Date: Sun Sep 14 2008 - 18:41:55 ART
I think you can use the "ppp ipcp" commands on R2 to offer your peer a
subnet mask...
http://www.cisco.com/en/US/docs/ios/dial/command/reference/dia_p1.html#wp1014565
On Sun, Sep 14, 2008 at 9:36 AM, But Nicky <lyredhair@gmail.com> wrote:
> Hi experts,
> I have a trouble with routing on ppp negotiated ip address interface.
> *My topology:* R1(S0/1) ----- (S0/1)R2
> R1: Loopback0: 10.1.1.1/24;
> R2: Loopback0: 10.2.2.2/24
> *My configuration:*
> R1:
> !
> interface Loopback0
> ip address 10.1.1.1 255.255.255.0
> !
> interface Serial0/1
> *ip address negotiated*
> encapsulation ppp
> clock rate 2000000
> no shutdown
> !
> R1#sh ip int brief
> Interface IP-Address OK? Method Status
> Protocol
> Serial0/1 131.1.12.1 YES *IPCP*
> up up
> Loopback0 10.1.1.1 YES NVRAM up
> up
> !
> R2:
> !
> interface Loopback0
> ip address 10.2.2.2 255.255.255.0
> !
> interface Serial0/1
> ip address 131.1.12.2 255.255.255.0
> encapsulation ppp
> *peer default ip address 131.1.12.1*
> no shutdown
> !
> R2#sh ip int brief
> Interface IP-Address OK? Method Status
> Protocol
> Serial0/1 131.1.12.2 YES manual up
> up
> Loopback0 10.2.2.2 YES NVRAM up
> up
> !
> R2#ping 131.1.12.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 131.1.12.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 4/43/152 ms
>
> *Problem with routing:*
>
> - RIPv2
>
> R1 & R2:
> !
> router rip
> version 2
> network 10.0.0.0
> network 131.1.0.0
> no auto-summary
> !
> Result: RIP don't exchange database.
> Resolve: R1 & R2
> !
> router rip
> no validate-update-source
> !
> *RIP operates normally.*
>
> - OSPF
>
> R1 & R2:
> !
> router ospf 1
> network 0.0.0.0 255.255.255.255
> !
>
> Result: OSPF don't establish adjacency
> R1#debug ip os adj
> *Mar 1 00:38:28.627: OSPF: Rcv pkt from 131.1.12.2, Serial0/1, area
> 0.0.0.0: src not on the same network
> *Mar 1 00:38:29.991: OSPF: Rcv pkt from 131.1.12.2, Serial0/1, area
> 0.0.0.0: src not on the same network.
> *Resolve:* *????? How to establish adjacency between R1 and R2*
>
> - EIGRP: Normally
>
>
> - BGP: Normally.
>
> *Conclusion:* I need your help to establish adjacency between R1 and R2 (R1
> serial obtains ip address from R2).
> Thanks in advance.
> Butnguyen.
>
>
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