05-23-2006 05:25 AM - edited 03-03-2019 12:47 PM
i've the lab environment - FR switch and 3 routers connected to it.
R1-
!
interface Serial0/1/0
no ip address
encapsulation frame-relay
load-interval 30
frame-relay lmi-type ansi
!
interface Serial0/1/0.1 multipoint
ip address 10.10.1.1 255.255.0.0
frame-relay map ip 10.10.1.3 103 broadcast
frame-relay map ip 10.10.1.5 105 broadcast
----
R3
!
interface Serial0/0/1
ip address 10.10.1.3 255.255.0.0
encapsulation frame-relay
load-interval 30
frame-relay class cisco
frame-relay map ip 10.10.1.1 301 broadcast
frame-relay lmi-type ansi
!
!
map-class frame-relay cisco
frame-relay cir 256000
frame-relay mincir 128000
frame-relay adaptive-shaping becn
!
!
-----
R5
!
interface Serial0/1/1
ip address 10.10.1.5 255.255.0.0
encapsulation frame-relay
frame-relay class cisco
frame-relay map ip 10.10.1.1 501 broadcast
frame-relay lmi-type ansi
!
!
map-class frame-relay cisco
frame-relay cir 256000
frame-relay mincir 128000
frame-relay adaptive-shaping becn
!
!
==========================
I tryed to load R5 serial interface from R1 router using ping with big packets. But no one BECN was send.
R5#sh frame-relay pvc
PVC Statistics for interface Serial0/1/1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 501, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/1/1
input pkts 2609 output pkts 304 in bytes 3626188
out bytes 198080 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
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 0 out bcast bytes 0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 00:27:36, last time pvc status changed 00:27:36
R5#
Is't right and how to resolve it?
05-23-2006 10:28 AM
Hi,
BECN's are generated by FR switches configured to send them. If you haven't put any special config on the FR-SW in your network, you shouldn't expect BECNs to come back to you. Please see this link for enabling advanced FR-SW features:
Will
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