"frame-relay fragment" and packet size

From: Arifur Rahman (arahman@cisco.com)
Date: Mon Sep 29 2003 - 00:23:05 GMT-3


Hi Group
Did you ever face following issue. I have configured "frame-relay fragment
150". Now I can not ping if packet size is over 148. Here is my
configuration and ping result.

interface Serial4/2
  ip address 150.50.24.4 255.255.255.0
  encapsulation frame-relay
  frame-relay traffic-shaping
  frame-relay map ip 150.50.24.2 401 broadcast
  frame-relay interface-dlci 401
   class voip
!
map-class frame-relay voip
  frame-relay cir 64000
  frame-relay bc 1000
  frame-relay be 0
  no frame-relay adaptive-shaping
  frame-relay fair-queue
  frame-relay fragment 150
  frame-relay ip rtp priority 16384 16383 64

r4#ping
Target IP address: 200.0.0.7
Repeat count [5]: 1
Datagram size [100]: 200
<snip>
Sending 1, 149-byte ICMP Echos to 200.0.0.7, timeout is 2 seconds:
03:00:11: Serial4/2(o): dlci 401, tx-seq-num 125, B bit set, frag_hdr 03 B1
80 7D
03:00:11: Serial4/2(o): dlci 401, tx-seq-num 126, E bit set, frag_hdr 03 B1
40 7E .
Success rate is 0 percent (0/1)

r4#ping
Target IP address: 200.0.0.7
Repeat count [5]:1
Datagram size [100]:
<snip>
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 60/60/64 ms
r4#

thank you - Arif

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