[c-nsp] E3 Link between 12000 & 72000 VXR

[gben]

Hello All,

We try to connect a 7200VXR with a GSR through E3 circuit (Back-to-Back).
The E3 Serial interface is UP – UP but we can not ping each other.
The 2 routers establish CDP neighborship and if we enable ISIS the 
routers can exchange LSAs and from routing view everything is OK.
It seems that for some strange reason the IP traffic can not pass over 
the E3 interface.

http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps1829/products_feature_guide09186a0080209dfd.html

According cisco: Enable scrambling before the data has gone through 
subrate processing by using the before subrate processing option with 
the scramble command. This configuration is necessary when connecting to 
Cisco 7200 Router E3 port adapters.

athgsr04(config)#interface Serial 1/1
athgsr04(config-if)#scr
athgsr04(config-if)#scramble ?
<cr>
The command “scramble before subrate” is missing.
athgsr04#ping 192.168.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

athgsr04#show interfaces ser 1/1
Serial1/1 is up, line protocol is up
Hardware is Packet over E3
Internet address is 192.168.1.1/30
MTU 4470 bytes, BW 34010 Kbit, DLY 200 usec, rely 255/255, load 1/255
Encapsulation HDLC, crc 16, loopback not set
Keepalive set (10 sec)
Last input 00:00:05, output 00:00:09, output hang never
Last clearing of "show interface" counters 01:03:12
Queueing strategy: fifo
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
442 packets input, 31020 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 parity
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
442 packets output, 30768 bytes, 0 underruns
0 output errors, 0 applique, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
athgsr04#sh cdp neighbors serial 1/1
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater

Device ID Local Intrfce Holdtme Capability Platform Port ID
7200-FR_switch Ser 1/1 128 R 7206VXR Ser 3/0
athgsr04#

Any ideas? IOS issue ?

Best Regards,
George



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