since I reconfiguring frame realy switch ..
R1 can ping r2 and r3
R2 can ping r1
r3 can ping r1
r2 can not ping r3
r3 can not ping r2
frame-switch#sho frame-relay route
Input Intf Input Dlci Output Intf Output Dlci Status
Serial1/1 122 Serial1/2 221 active
Serial1/1 123 Serial1/3 321 active
Serial1/2 221 Serial1/1 122 active
Serial1/3 321 Serial1/1 123 active
===================================
interface Serial1/1
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clock rate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 122 interface Serial1/2 221
frame-relay route 123 interface Serial1/3 321
!
interface Serial1/2
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clock rate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 221 interface Serial1/1 122
!
interface Serial1/3
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clock rate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 321 interface Serial1/1 123
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