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

[David Freedman]

Can you paste the interface configs of both sides?



gben wrote:
> 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
> 
> 
>