Does Virtual IP on letter V share fate with other letters?

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

Where is Virtual IP measured first?

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

How fast is rollback for v-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.

Virtual IPs that move with the healthy pool

A VIP is a promise: the address stays, the backend may change. Gratuitous ARP and BGP anycast are both first-class.

Virtual IP: Why it matters on this continent

Design for Virtual IP on letter V starts in São Paulo (GRU). Runbook v-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.

Virtual IP: How XServ runs it day to day

Probes for Virtual IP (v-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.

Virtual IP: What operators should measure

Policy for Virtual IP is versioned as v-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.

Virtual IP: Failure modes we actually see

Capacity notes for v-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.

Virtual IP: How this letter ties to the rest

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

Virtual IP: A note on cost and transit

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

Virtual IP design V-01

Virtual IP probe V-02

Virtual IP policy V-03

Virtual IP capacity V-04

Virtual IP handoff V-05

Virtual IP rollback V-06

Virtual IP peering V-07

Peering for Virtual IP (v-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.

Virtual IP cache V-08

Cache rules for Virtual IP on v-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.

Virtual IP headers V-09

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

Virtual IP timeouts V-10

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

Virtual IP regions V-11

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

Virtual IP docs V-12

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