help on a lan extender config problem

[scruff64]

I have a cisco lan exteder 1001 series and I have set it up so that it can be controlled by the core router but yet I can not ping the interface. Here is the lex interface configRouter#show int lex1
Lex1 is up, line protocol is up
Hardware is Lan Extender, address is 0000.0c33.6636 (bia 0000.0c33.6636)
Internet address is 201.11.11.1 255.255.255.0
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation ARPA, loopback not set, keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 4:00:00
Bound to Serial1
Last input 0:00:33, output never, output hang never
Last clearing of "show interface" counters never
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
434 packets input, 68627 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets, 0 restarts
0 output buffer failures, 0 output buffers swapped out
can anyone see any problems as to why I can not ping the interface.

 

[l3stuff]

not without the config

 

[scruff64]

the config for the two interfaces are as follows
interface Serial1
ip address 201.100.11.1 255.255.255.0
encapsulation ppp
clockrate 56000
!
interface Lex1
ip address 201.11.11.1 255.255.255.0
no fair-queue
lex burned-in-address 0000.0c33.6636
!
and the serial interface is as follows
Serial1 is up, line protocol is up
Hardware is HD64570
Internet address is 201.100.11.1 255.255.255.0
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation PPP, loopback not set, keepalive set (10 sec)
LCP Open
Closed: ipcp
Listen: cdp
Open: lex
Last input 0:00:00, output 0:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Output queue: 0/64/0 (size/threshold/drops)
Conversations 0/1 (active/max active)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 1 packets/sec
5 minute output rate 0 bits/sec, 1 packets/sec
2767 packets input, 115814 bytes, 0 no buffer
Received 24 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1884 packets output, 30450 bytes, 0 underruns
0 output errors, 0 collisions, 11 interface resets, 0 restarts
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

I know that I can controle the lan extender but I cannot ping the interface?