Frame Relay setup: What am I missing?

bermovick

R2(s0/0) to FR_Switch(s1/0), FR_Switch(S2/1) to R7(S0/0).
I have other routers on the topology. I haven't set them all up yet, but pings to the other routers I've set up work (they're multipoint).

R2:
interface Serial0/0
ip address 192.168.2.2 255.255.255.0
encapsulation frame-relay
clock rate 2000000

R7:
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
interface Serial0/0.102 point-to-point
ip address 192.168.2.1 255.255.255.0
frame-relay interface-dlci 102

FR_Switch:
interface Serial1/0
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 56000
no dce-terminal-timing-enable
frame-relay intf-type dce
frame-relay route 107 interface Serial2/1 102

interface Serial2/1
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 56000
no dce-terminal-timing-enable
frame-relay intf-type dce
frame-relay route 102 interface Serial1/0 107
frame-relay route 103 interface Serial1/1 107
frame-relay route 104 interface Serial1/2 107
frame-relay route 105 interface Serial1/3 107
frame-relay route 106 interface Serial2/0 107

I don't see anything obvious I've missed, but pings from R7 to R2 fail.

sh frame-relay map on R2 doesn't show anything, which is bad, but I don't see any obvious mis-configuration.

[edit] Manually mapping the dlci works, so it appears to be an LMI problem, but I don't see anything obvious with sh frame-relay lmi either:

R2#sh frame-relay lmi

LMI Statistics for interface Serial0/0 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 599 Num Status msgs Rcvd 599
Num Update Status Rcvd 0 Num Status Timeouts 3
Last Full Status Req 00:00:12 Last Full Status Rcvd 00:00:12

FR_Switch#sh frame-relay lmi

LMI Statistics for interface Serial1/0 (Frame Relay DCE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Rcvd 600 Num Status msgs Sent 600
Num Update Status Sent 0 Num St Enq. Timeouts 3

[EDIT2]
I'm full of edits today, but I figured it out. Apparently if you turn inverse arp off at one end of the link it messes up with the other end as well.