06-16-2009 06:43 AM - edited 03-04-2019 05:08 AM
hello ALL
We have some branches connected with frame relay with 256kbps bandwidth.
sometime we need to use all these bandwidth for file transferring or other purposes. It seems that connection could not be use 100% this can be viewed by monitoring software or router interface (please see below).
does have on frame relay any restriction (knowing that is packet switching) to be like this, or on provider side must be any congestion or configuration that is not permitting to use full bandwidth
thanks in advance
Serial0:1 is up, line protocol is up
Hardware is DSX1
Description: **conn to XXXX**
Internet address is 10.10.12.10/24
MTU 1500 bytes, BW 256 Kbit, DLY 20000 usec,
reliability 255/255, txload 100/255, rxload 120/255
Encapsulation FRAME-RELAY, loopback not set
Keepalive set (10 sec)
Solved! Go to Solution.
06-16-2009 07:51 AM
Your FRTS configuration is limiting the circuit to 200kbps.
If you want to use the full 256kbps, you need to modify your FRTS config.
HTH,
__
Edison.
06-16-2009 07:26 AM
First thing, what is the Committed Information Rate ?. Its not always the case that B/W = CIR.
next get comfortable with some of the show commands and start looking to see if anything is being discarded (FECNs &BECNS)
or marked discard elegible.
last but not least. examine the tcp workstation settings. Tht is more often than naught the culprit.
06-16-2009 07:42 AM
hello,
nothing is discarding
In our case CIR is 256Kbps.
PVC Statistics for interface Serial0:1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 53, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0:1
input pkts 17549400 output pkts 16789498 in bytes 1988967189
out bytes 1216136232 pkts dropped in 0
pkts dropped out 9346 dropped bytes out 3560646
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 47 out bcast bytes 1598
5 minute input rate 0 bits/sec, 2 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
Shaping adapts to BECN
pvc create time 5w0d, last time pvc status changed 5d20
06-16-2009 07:29 AM
Can you provide us with the whole config?
Are you using any type of QoS (GTS or FRTS)?
On Frame-Relay, you get 2 numbers; 1:Port Speed, 2: CIR.
The CIR is the maximum the provider will allow you to burst to. This amount isn't guaranteed.
The Port speed reflects the guaranteed speed you've purchased and usually is half of the CIR.
So if you have a 256kbps FR circuit, the guaranteed speed is usually half of that - 128kbps.
If you check your show frame pvc and notice a lot of DE packets (Discard Eligible) and BECN packets (Backward explicit congestion notification) then you have an oversubscribed network.
HTH,
__
Edison.
06-16-2009 07:48 AM
Please see below:
interface Serial0:1
description **conn to XXXX**
bandwidth 256
ip address 10.10.12.10 255.255.255.0
encapsulation frame-relay
no fair-queue
frame-relay class map1
frame-relay traffic-shaping
frame-relay interface-dlci 53
map-class frame-relay map1
frame-relay cir 200000
frame-relay bc 2000
frame-relay adaptive-shaping becn
06-16-2009 07:51 AM
Your FRTS configuration is limiting the circuit to 200kbps.
If you want to use the full 256kbps, you need to modify your FRTS config.
HTH,
__
Edison.
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