Does Peering on letter P share fate with other letters?

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

Where is Peering measured first?

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

Peering: handoff in São Paulo (GRU) · P-05

Runbook P-05 for Peering in São Paulo (GRU). Marker xserv-p-c128ae06b932. This page covers handoff for LATAM operators, not a worldwide average.

Peering: How this letter ties to the rest

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

Peering: A note on cost and transit

Rollback for p-06 is a documented command, not a hope. Transit is billed as backup while Peering prefers peering in Santiago. If cost spikes, the runbook cuts overflow to Bogotá before touching customer prefixes.

Peering: Why it matters on this continent

Design for Peering on letter P starts in São Paulo (GRU). Runbook p-01 keeps a single owner, a written rollback, and a traffic split that can be reversed without a global freeze. Neighbors in Santiago only take overflow after the local pool fails a health window.

Peering rollback P-06

Peering peering P-07

Peering for Peering (p-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.

Peering cache P-08

Cache rules for Peering on p-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.

Peering headers P-09

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