Cell Relay Archive

[No Spam <lamouryNoSpam@hotmail.com>]

Meng-Hsi,

For PVC's the network admin assigns the VPI/VCI's by himself so the switch
doesn't make any decision. For SVC's the algorithm is vendor specific
although most vendors would scan from 32 up and pick up the first free VCI.

Yan.

> Meng-Hsi Chiu wrote:
> Becaue the ATM forum recommendations, VCI range from 0 to 31 must reserve
> for
> special usage. So the user's VCI is ranging from 32 to 65535 in theory.
> My question is:
> How the ATM switch will assign the VCI range? Is it assigned from VCI=32,
> then
> VCI=33, then VCI=34, then VCI=35? If the first connection(its VCI=32)
> release
> connection now, what VCI number will be assigned for next call setup,
> whether it is 32 or 36?  It is important to us, please answer me.