Does Interconnect on letter I share fate with other letters?

The control plane is shared. Data-plane queues for Interconnect stay isolated, so incident i-01 cannot drain neighbor letters.

Where is Interconnect measured first?

From Santiago (SCL) toward Bogotá. A global average is not an SLO for letter I.

Interconnect: headers in São Paulo (GRU) · I-21

Runbook I-21 for Interconnect in São Paulo (GRU). Marker xserv-i-df9731ddd017. This page covers headers for LATAM operators, not a worldwide average.

Interconnect: What operators should measure

Policy for Interconnect is versioned as i-03. Operators measure error rate, p95 from Bogotá, and time-to-rollback — not a worldwide average. Changes land in Bogotá first, then Miami, with a hold if either region regresses.

Interconnect: Failure modes we actually see

Capacity notes for i-04 assume rainy-season power in Miami and festival peaks toward São Paulo. The failure we actually see is a single uplink, not a cartoon partition of the whole continent. Spare ports and a second provider sit on the same runbook.

Interconnect: How this letter ties to the rest

Handoff from letter I Interconnect into the rest of the platform uses the same request IDs as the gateway. Runbook i-05 names who accepts the ticket after São Paulo pages out. Santiago does not silently inherit the incident.

Interconnect peering I-07

Peering for Interconnect (i-07) prefers the IX fabric that already carries last-mile ISPs in Bogotá. Session counts and prefix limits are on the same page as the Miami backup path.

Interconnect cache I-08

Cache rules for Interconnect on i-08 keep language-correct objects near Miami. São Paulo is a sibling cache, not an origin. TTLs are short enough that a bad asset does not live through a weekend.

Interconnect headers I-09

Headers for i-09 carry the letter, the region (GRU) and a request id. Interconnect debugging in São Paulo should not require a packet capture in Santiago first.

Interconnect timeouts I-10

Timeouts on i-10 are tighter than the WAN RTT to Bogotá. Interconnect in Santiago fails fast and retries once; a third try needs a human because it is no longer a blip.