Saarbrucken, DE

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Local preferences in AS20535
100 customers (default)
70 upstreams
60 use AS20535 as backup only

BGP community list

Control localpref in the AS20535 backbone
20535:60 Set localpref to 60 (use AS20535 as backup)
20535:70 Set localpref to 70

Control route announcement to the upstreams
20535:1NN0 - do not announce to NN
20535:1NNx - prepend AS20535 x times while announcing to NN

Route is learned from peer NN
20535:2NN

x is number of prepends (1, 2, 3) or do not announce (0)
NN is
01 Telia-Sonera (AS1299)
02 Level3 (AS3356)
03 Masterhost (AS25532)
04 ReTN (AS9002)

Route is learned from upstream, do not announce it
to other upstreams.
20535:2000

AS20535 does not accept or announce
prefixes longer than 24 bits
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created murphy@rich.chel.su 19960113
The above information was collected from whois.ripe.net, using
object "AS20535" on September 15, 2019