cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
667
Views
0
Helpful
1
Replies

Cannot ping an STM-16 with MTU bigger than 120 bytes

natamen
Level 1
Level 1

Hi,

I have a Cisco 12006 and two STM-16 / OC-48 interface cards. One of them is a one port ISE card and the other is a one port SPA (inserted in a SIP 401). IOS version is 12.0(32)SY recommended for this kind of hardware. I connected both ports back to back and they seem to be working OK. The thing is that if I send ICMP packets bigger than 120 bytes, they fail. Interface configs are:

interface POS0/1/0

ip address 10.10.10.2 255.255.255.252

no ip directed-broadcast

encapsulation ppp

no ip mroute-cache

load-interval 30

crc 32

clock source internal

pos framing sdh

pos flag s1s0 2

interface POS5/0

ip address 10.10.10.1 255.255.255.252

no ip directed-broadcast

encapsulation ppp

no ip mroute-cache

load-interval 30

crc 32

clock source internal

pos framing sdh

pos scramble-atm

pos flag s1s0 2

ANY IDEA WHY THIS IS HAPPENING AND HOW CAN I SOLVE IT?

My final goal is to perform some BER testing in these interfaces.

Thanks a lot for any help!!!

Nataniel

1 Reply 1

natamen
Level 1
Level 1

Hello, maybe I came to the wrong forum. Should I post this issue in a different Topic/Conversation? Any guidance will be appreciated.

Thanks in advance,

Nataniel