[spb-isis] SPB Interop - some clarifications related to some private emails I've received

[Peter Ashwood-Smith <[e-mail]>]

 

Just wanted to confirm the proper SPB code points for the interop. There was
a bit of confusion because the latest -05 draft has values different than
those just allocated by IANA. We want of course to use the proper IANA
values. The proper IANA allocations are of course here:
<http://www.iana.org/assignments/isis-tlv-codepoints/isis-tlv-codepoints.xml
>
http://www.iana.org/assignments/isis-tlv-codepoints/isis-tlv-codepoints.xml
.

 

Below is a more concise form. Note that I recommend initially ignoring an
MCID mismatch on receipt and not even sending the optional Digest since
we'll likely all screw it up the first time ;) and its not the most
important or interesting part of the Interop.

 

For those of you doing viewing tools a good strategy would be to simply look
at the MCID and B-VID that you receive and reflect it back in your own IIH.
You could take that strategy with other attributes like the area id etc. and
'reflect' would likely make a nice default behavior for some of those
attributes to allow fast plug and play behavior ... IMHO.

 

Peter

 

 

 


 

BPDUs (native)

 

-


IIH

 

 

 


 

NLPID

 

129


 

MT-Port-Cap

 

143


 

 

SPB-MCID

4


 

 

SPB-Digest

5


 

 

SPB-B-VID

6


LSP

 

 

 


 

MT-Capability

 

144


 

 

SPB-Inst

1


 

 

SPB-I-OALG

2


 

 

SPBM-SI

3


 

Extended-IS-Reachability/MT-Intermediate-System

 

22/222


 

 

SPB-Metric

29


 

 

SPB-A-OALG

30