Hello
I have customer connected to my network via ATM OC3 card. Interface
configuration on my Cisco:
!
interface ATM0/0/1
no ip address
no shutdown
!
interface ATM0/0/1.1
description 4mbit/s to CUSTOMER
bandwidth 4000
ip address 10.10.10.1 255.255.255.252
no shutdown
pvc 1 30/100
ubr 4000
oam-pvc manage
encapsulation aal5snap
!
!
The network diagram:
[ MY CISCO ] OC3 [ ]
[ ATM0/0/1 ] <---------> [ CUSTOMER ]
[ 10.10.10.1 ] [ 10.10.10.2 ]
And now I have few questions according this configuration:
1) Is any diffrence in using CBR instead of UBR
in PVC configuration ? I think that 155mbps OC3 link can guarante
in 100% 4mbit/s traffic. But CBR looks better...
2) Is any _good_ method to calculate Cell Rate for IP
Mbit/s ? For example I'd like to calculate what Cell Rate is
"true" 4mbit/s of IP packets for ATM PVC circut with
aal5snap encapsulation ?
3) The cell rate set by CBR/UBR command on my PVC is only responsable
for outbound traffic (packets transmitted to Customer) ? If
yes, Can I traffic-shape inbound traffic (packtes transmitted from
Customer) on this PVC ? Maybe some QOS rate-limit command ?
4) If between My router and Customer's router will
be added ATM Switch. Where traffic-shaping must be done ? Still on
Routers or only on ATM switch ? Or maybe on Routers and ATM Switch ?
best regards, Tom
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