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rare-users - Re: [RARE-users] [freertr] [gn4-3-wp6-t1-wb-RARE] SRv6 path tracing (as an alternative to INT/IOAM, for SR networks)

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Re: [RARE-users] [freertr] [gn4-3-wp6-t1-wb-RARE] SRv6 path tracing (as an alternative to INT/IOAM, for SR networks)


Chronological Thread 
  • From: mc36 <>
  • To: Simon Leinen <>
  • Cc: , Tim Chown <>, ,
  • Subject: Re: [RARE-users] [freertr] [gn4-3-wp6-t1-wb-RARE] SRv6 path tracing (as an alternative to INT/IOAM, for SR networks)
  • Date: Mon, 22 Aug 2022 14:32:19 +0200



On 8/22/22 14:06, mc36 wrote:

can i ask if you mean rsvp under the connection management?
if yess, then imho running sr (not sr-te) is what worth a try:

it's a single label index (plus the label base), binded to a /32, distributed
in the igp...
to have it mapped to the lfib, you populate all the labels starting from the
local label base up to the configured domain max...
once a box enters the sr domain, it advertises the /32 and the index... and
that's it, everybody in the domain knows everything
for the end2end.... no rsvp nor ldp is needed at all...

regarding the interop, freerouter uses random srgb by default, that is,
there is no cheating, and both cisco and junos interworks for years now,
so one can arbitrary mix anything in a given domain...
imho i missed the point: in the dataplane, it's a single label much like rsvp
or ldp, but without them...

if the srgb is the same (configured or by using the same vendor) then no
label swapping, the packet traverses with the same label...

br,
cs



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