From: Canfield, Michael (mcanfield@protobase.com)
Date: Wed Aug 20 2008 - 13:37:47 ART
When using PPP encapsulation, each serial interface advertises its /32 IP address as part of the PPP process to the other interface.
Regards,
Mike Canfield
Southern DataComm, an Elavon Payments Division
10700 76th Court | Largo, FL 33777
Desk: 727-431-1150
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of yungli2008@gmail.com
Sent: Wednesday, August 20, 2008 12:24 PM
To: ccielab@groupstudy.com
Subject: serial-link address
Hi experts
I am facing this in dynamip with c3640-jk9o3s-mz.124-16.bin IOS
here is my scenario
R4(S1/1)---PPP----(s1/1)R5
R4
int s1/0
ip add 163.1.45.4 255.255.255.0
encap ppp
no sh
R5
int s1/0
ip add 163.1.45.5 255.255.255.0
encap ppp
no sh
---------------
R4
Rack1R4(config)#do sh ip rou con
163.1.0.0/16 is variably subnetted, 6 subnets, 2 masks
C 163.1.45.5/32 is directly connected, Serial1/1
C 163.1.45.0/24 is directly connected, Serial1/1
C 163.1.0.0/24 is directly connected, Serial1/0
R5
Rack1R5(config-if)#do sh ip rou con
163.1.0.0/16 is variably subnetted, 6 subnets, 2 masks
C 163.1.45.4/32 is directly connected, Serial1/1
C 163.1.45.0/24 is directly connected, Serial1/1
C 163.1.0.0/24 is directly connected, Serial1/0
---------------
Why the interface serial 1/1 shows two mask?
If i changed the encapsulation ppp to default hdlc then it shows single mask.
Would you please anyone explain me?
Advance thanks
Li
Blogs and organic groups at http://www.ccie.net
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