Difference in input/output rates on point serial interfaces

[Kaushik Ray]

Hello

I am trying to setup a p-p serial interface link and see the following:

Config on side A

interface Serial0/2/3
 bandwidth 512
 ip address 192.168.241.1 255.255.255.252
 ip virtual-reassembly in
 encapsulation frame-relay
 load-interval 30
 serial restart-delay 0
 frame-relay interface-dlci 100
  load-interval 30
 frame-relay ip rtp header-compression periodic-refresh
 frame-relay intf-type dce
 service-policy output WAN-LLQ
end

Config on side B

interface Serial0/0/0
 bandwidth 512
 ip address 192.168.241.2 255.255.255.252
 ip virtual-reassembly in
 encapsulation frame-relay
 load-interval 30
 serial restart-delay 0
 frame-relay interface-dlci 100
 frame-relay lmi-type cisco
 frame-relay ip rtp header-compression periodic-refresh
end

Show int on side A

 30 second input rate 384000 bits/sec, 119 packets/sec
  30 second output rate 23000 bits/sec, 97 packets/sec

at the same time show int on side B

 30 second input rate 475000 bits/sec, 96 packets/sec
  30 second output rate 389000 bits/sec, 115 packets/sec

the output on side B seems to match input on side A but the output on side A does not seem to match input on side B

any reason why this may be happening?

Side A has recently been moved from a cisco 2811 router with WIC2T to a 39xx series router with HWIC-4T and the only command that was not accepted that was existing in the previous serial interface was max reserved bandwidth 100.

Any advise on this discrepancy will be much appreciated.

Many thanks in advance

[Joseph W. Doherty]

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Posting

Could the difference be that the two routers are measuring their own 30 second average?