Has been a while since I checked the status of root servers which are hosted at NIXI. The list as per their official member list stays the same i.e i root in Mumbai, K root in Noida and F root in Chennai. i root seems to be up! show ip bgp neighbors 218.100.48.75 received-routes There are 5 received routes from neighbor 218.100.48.75 Searching for matching routes, use ^C to quit... Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH m:NOT-INSTALLED-MULTIPATH S:SUPPRESSED F:FILTERED s:STALE Prefix Next Hop MED LocPrf Weight Status 1 192.
Last week I noticed that F root was showing poor connectivity with Indian RIPE Atlas probes for F-root. The graph looked really terrible.
Telekom Germany I traced to it from one of RIPE Atlas probes and saw this trace:
Probe #6107 1 2401:7500:fff0:1::1 0.838 ms 0.747 ms 0.632 ms 2 2400:5200:1c00:d::1 1.755 ms 1.745 ms 1.726 ms 3 2403:0:100::2be 2.089 ms 2.054 ms 2.049 ms 4 2404:a800:2a00::13d 45.589 ms 26.274 ms 33.
Enjoyed ISC’s presentation about their analysis of F root server (one 13 root DNS servers which power the Internet) about anycast performance gloablly for 192.5.5.0/24 announced (and anycasted) by AS3557 (ISC). This was presentation at UKNOF 32.
Embedded presentation below (or click here to watch on YouTube directly)
And finally ACN i.e “Advanced Computer Networks” exam next. Hopefully less to cram in this one and syllabus is pretty interesting. Talking about networks - I am very happy to post this update. Finally F root server’s node in Chennai is back up! Though ISC did not updated me about this development but anyways I can always assume they were busy in hitting head with India bureaucratic bodies. :)
If you are following my blog, you might have seen my past blog post about “Broken connectivity of F root server” due to NIXI’s routing policies.
Time for a quick followup blog post. On 26th April of this year I blogged about broken connectivity of F root server which was hosted in NIXI Chennai. Apart from that blog post, I did informed ISC which operates F root (NIXI was host on behalf of them in India). In my open email on APNIC mailing list, I got a reply from Network Operations Center of ISC that they will verify and will take necessary action.