Subnet Management - c4isl (Application)

Proposal 137677 Review | Lorimer :infinity: :dog_face: - CO.DELTA △

VOTE: NO

TLDR: Replaces 4 nodes (2 unnecessarily), even though the failure domain is 5. This means the subnet will be in a precarious position during the node sync process (1 additional node failure and the subnet stalls).

2 nodes are offline, and this proposal swaps them for online nodes, however it also swaps 2 other nodes with no explanation (most likely in an attempt to optimise decentralisation coefficients). In total 4 nodes would be removed, and replaced with nodes that will not be productive immediately (it takes time for new nodes to assimilate with the subnet).

@DRE-Team, can you confirm if you accounted for this risk, and provide some additional commentary. Without this I will plan to reject within the next 2 days. Thanks.

Country Discrepancies (1)
Node Data Center Claimed Country According to ipinfo.io
dh4nc Toronto 2 Canada United States of America (the)

Despite what ipinfo.io says, ping testing supports the claimed location

Decentralisation Stats

Subnet node distance stats (distance between any 2 nodes in the subnet) →

Smallest Distance Average Distance Largest Distance
EXISTING 224.22 km 6626.101 km 16395.058 km
PROPOSED 447.373 km (+99.5%) 7228.489 km (+9.1%) 16379.519 km (-0.1%)

This proposal slightly increases decentralisation, considered purely in terms of geographic distance (and therefore there’s a slight theoretical increase in localised disaster resilience). :+1:

Subnet characteristic counts →

Continents Countries Data Centers Owners Node Providers Node Operator
EXISTING 4 11 13 13 13 13
PROPOSED 4 13 (+15.4%) 13 13 13 13

This proposal slightly improves decentralisation in terms of jurisdiction diversity. :+1:

Largest number of nodes with the same characteristic (e.g. continent, country, data center, etc.) →

Continent Country Data Center Owner Node Provider Node Operator
EXISTING 7 2 1 1 1 1
PROPOSED 6 (-14.29%) 1 (-50%) 1 1 1 1

See here for acceptable limits → Motion 137147

The above subnet information is illustrated below, followed by a node reference table:

Map Description
  • Red marker represents a removed node (transparent center for overlap visibility)

  • Green marker represents an added node

  • Blue marker represents an unchanged node

  • Highlighted patches represent the country the above nodes sit within (red if the country is removed, green if added, otherwise grey)

  • Light grey markers with yellow borders are examples of unassigned nodes that would be viable candidates for joining the subnet according to formal decentralisation coefficients (so this proposal can be viewed in the context of alternative solutions that are not being used)

  • Black dotted line connects to a small black marker that shows where the IP address indicates the node is located (according to ipinfo.io). This is only displayed if it conflicts with where IC records indicate the node is located. See Country Discrepancies section above for more info.

Node Changes
Action Node Status Continent Country Data Center Owner Node Provider Node Operator
Remove e5xk3 UP :bar_chart: Europe Switzerland Zurich 6 (zh6) Green.ch Sygnum Bank ciprs
Remove mwrqx DOWN :bar_chart: Asia Hong Kong HongKong 1 (hk1) Unicom Pindar Technology Limited vzsx4
Remove 62qwz UP :bar_chart: North America United States of America (the) Atlanta 2 (at2) Datasite Giant Leaf, LLC spsu4
Remove iqnlc DOWN :bar_chart: Africa South Africa Gauteng 1 (jb1) Teraco Karel Frank 2rzvs
Add 2katp UP :bar_chart: Asia India Panvel 2 (pl2) Yotta Krishna Enterprises 7rw6b
Add f3t2w UP :bar_chart: Asia Korea (the Republic of) Seoul 3 (kr1) KT Pindar Technology Limited iubpe
Add pgjz5 UP :bar_chart: Asia Singapore Singapore 3 (sg3) Racks Central Protocol16 vicvb
Add u7xea UP :bar_chart: Africa South Africa Gauteng 3 (jb3) Xneelo Wolkboer (Pty) Ltd ymenq
Other Nodes
Node Status Continent Country Data Center Owner Node Provider Node Operator
ofdd3 UP :bar_chart: Europe Belgium Antwerp (an1) Datacenter United DeNoDe z4wll
dh4nc UP :bar_chart: North America Canada Toronto 2 (to2) Cyxtera Blockchain Development Labs 4lp6i
6dmez UP :bar_chart: Europe Switzerland Geneva (ge1) HighDC Decentralized Entities Foundation xdara
4lg7u UP :bar_chart: Europe Isle of Man Douglas 2 (im2) Continent8 Zarety LLC ylbc3
ng56n UP :bar_chart: Asia Japan Tokyo (ty1) Equinix Starbase z2o65
3beeq UP :bar_chart: Europe Latvia Riga 3 (rg3) Nano Bohatyrov Volodymyr 6igux
izs3i UP :bar_chart: Europe Sweden Stockholm 1 (sh1) Digital Realty DFINITY Stiftung lgp6d
z5jll UP :bar_chart: Europe Slovenia Maribor (mb1) Posita.si BlockFinance ozfkj
gp2km UP :bar_chart: North America United States of America (the) Las Vegas (lv1) Flexential 87m Neuron, LLC gsps3


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Note that this analysis involved data provided by the IC-API, which is not open source. I’m in the process of switching over to more verifiable sources of this sort of information for future proposal reviews. See here for related discussion.

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