RE: Clarification request on rate fields in LMP

["Jonathan Lang" <Jonathan.Lang@rinconnetworks.com>]

Richard,
The Reservable bandwidth fields should correlate with the reservable
bandwidth fields of GMPLS routing/signaling (without the notion of
priority).  I.e., the reservable bandwidth field is defined in gmpls
routing as follows: " Reservable Bandwidth per priority, which specifies
the bandwidth of an LSP that could be supported by the interface at a
given priority number."

Thanks,
Jonathan

> -----Original Message-----
> From: Bradford, Richard [mailto:rbradfor@cisco.com] 
> Sent: Wednesday, August 06, 2003 1:14 PM
> To: jplang@ieee.org
> Cc: ccamp@ops.ietf.org
> Subject: Clarification request on rate fields in LMP
> 
> 
> Some different interpretations for the various rates in LMP 
> messages have come to my attention. These involve the Minimum 
> Reservable Bandwidth and Maximum Reservable Bandwidth in a 
> LinkSummary message. One interpretation is that the 
> Reservable Bandwidths at least should represent only the 
> payload portion of the bandwidth. An alternate interpretation 
> is that all these fields should include all overhead.
> 
> Let's take the case of a STM-4 Interface, which supports 
> signalling of individual VC-4 circuits.
> 
> 
> Position 1: Raw bandwidth should be used so the values should be:
>  Minimum Reservable Bandwidth = OC-3/STM-1   (155.52 Mbps)
>  Maximum Reservable Bandwidth = OC-12/STM-4  (622.08 Mbps)
> 
> Position 2: Since for SDH the TDM circuits will be signalled 
> either as individual VC-4s or as a single VC-4-4c, therefore 
> the values should be:
> 
>  Minimum Reservable Bandwidth = VC-4 (149.760 Mbps)  
>  Maximum Reservable Bandwidth = VC-4-4c (599.040 Mbps)
> 
> Other interpretations?
> 
> The following are the values from generalized-signaling
> 
>         Signal Type   (Bit-rate)              Value (Bytes/Sec)
>                                             (IEEE Floating point)
>       --------------  ---------------       ---------------------
>                  DS0  (0.064 Mbps)              0x45FA0000
>                  DS1  (1.544 Mbps)              0x483C7A00
>                   E1  (2.048 Mbps)              0x487A0000
>                  DS2  (6.312 Mbps)              0x4940A080
>                   E2  (8.448 Mbps)              0x4980E800
>             Ethernet  (10.00 Mbps)              0x49989680
>                   E3  (34.368 Mbps)             0x4A831A80
>                  DS3  (44.736 Mbps)             0x4AAAA780
>                STS-1  (51.84 Mbps)              0x4AC5C100
>                   E4  (139.264 Mbps)            0x4B84D000
>           OC-3/STM-1  (155.52 Mbps)             0x4B9450C0
>          OC-12/STM-4  (622.08 Mbps)             0x4C9450C0
>         OC-48/STM-16  (2488.32 Mbps)            0x4D9450C0
>        OC-192/STM-64  (9953.28 Mbps)            0x4E9450C0
>       OC-768/STM-256  (39813.12 Mbps)           0x4F9450C0
>