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.

How fast is rollback for p-03?

The runbook is a command plus a named owner. There is no wait for a weekly change freeze.

Is transit the default path?

No. Peering in Miami is default; transit to São Paulo is overflow and is billed that way.

Peering with the networks your customers already use

Settlement-free peering at local IXPs keeps last-mile ISPs one hop away instead of hairpinning through transit.

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: How XServ runs it day to day

Probes for Peering (p-02) leave Santiago every 15s toward Bogotá. XServ pages the named owner if loss or RTT crosses the letter budget. A probe never shares a queue with bulk transfers, so a saturated WAN does not hide a dead PoP.

Peering: What operators should measure

Policy for Peering is versioned as p-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.

Peering: Failure modes we actually see

Capacity notes for p-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.

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 design P-01

Peering probe P-02

Peering policy P-03

Peering capacity P-04

Peering handoff P-05

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.

Peering timeouts P-10

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

Peering regions P-11

Region names on p-11 match DNS and tickets: Bogotá / BOG, with Miami as the documented pair. Peering dashboards never say “LATAM” as if it were one RTT.

Peering docs P-12

Public docs for letter P stay aligned with identifier xserv-p-pack. Page p-12 is the Peering slice operators search before the homepage. Edits in Miami show up in São Paulo on the next publish.