Reported 23 Sept 2026 Compute

China counted the American switches inside its state data centres and found them almost everywhere.

On September 23 the Financial Times reported that SASAC, the commission that owns China's central state enterprises, has spent recent weeks surveying how much Broadcom networking equipment sits inside state-backed data centres, and found Broadcom switches in as much as 90 percent of the data centre equipment at the firms it looked at. The report says the commission may issue informal guidance to cut that use, under the policy Beijing calls domestic chips for domestic use.

Two caveats matter: this is single-origin reporting with no statement from SASAC or Broadcom, and a survey conducted over weeks is not an action taken on a date, so September 23 is when the finding became public rather than when anything was done.

Until now

American export controls on China covered the accelerators and the equipment that makes them. The networking that connects them was American, unrestricted, and nobody had published a number for how much of it was installed.

Now

Treat data centre networking as the next layer to be counted and substituted, and note that Beijing now has that number for its own estate and Washington does not.

The interesting part of this is which layer got counted. Three years of export control argument has been about accelerators, about how many H-series or B-series parts reach Chinese buyers and through which intermediary. The switch layer sat underneath all of it, unrestricted, and it turns out to be the place where the American position is deepest: as much as 90 percent of the networking equipment at the state firms SASAC looked at. That is a higher share than the United States ever held in Chinese accelerators, held in a component nobody wrote a rule about, and Beijing appears to have found out by asking its own companies.

What follows from a survey is not a ban, and nothing has been banned. The reported next step is informal guidance, which in the Chinese state sector is how substitution usually starts: no published rule, no date, a preference communicated to procurement departments that own budgets across dozens of firms. That is slower than a ban and harder to appeal, and it is also harder for anyone outside to verify, which is why this card is Reported and will stay Reported until Broadcom has to say something about Chinese demand in public. The company has never disclosed a China data centre revenue line. Treat data centre networking as the next layer to be counted and substituted, and note that Beijing now has that number for its own estate and Washington does not.

How it got here

Sep 8
American agencies name six Chinese firms over model distillation, and the argument about what crosses the border is about models and chips. Carded in Edition 016.
Sep 20
ChangXin Memory says its newest line runs at a density close to the leading edge, one more domestic substitution claim. Carded in Edition 028.
Sep 22
Alibaba launches the Zhenwu V900 accelerator and specifies clusters to 500,000 cards, which is a networking problem before it is a chip problem. Carded in Edition 030.
Sep 23
The Financial Times reports SASAC has surveyed Broadcom switch use across state data centres and found it at up to 90 percent.
Who has to react
Broadcom, which has never broken out Chinese data centre revenue and will be asked to in December; Huawei and Centec, the named domestic alternatives, whose order books are the observable consequence; Nvidia and AMD, whose accelerator sales into China depend on a fabric they do not control; Alibaba, Tencent and ByteDance, who buy the same switches and are not state-owned, so the guidance may or may not reach them; the American agencies that wrote export controls covering accelerators and not networking; and every hyperscaler outside China that assumed this layer was a settled market.

The evidence

Reported. The survey and the 90 percent figure come from a single origin, the Financial Times, carried onward by Reuters and the wires; SASAC has published nothing, Broadcom has said nothing, and the underlying work is described as taking place over recent weeks rather than on one day, so September 23 is the date the finding became public rather than the date of an act. Verification event: Broadcom's fiscal fourth quarter results and earnings call, expected in the second week of December 2026, at which China data centre demand has to be addressed in public, or a SASAC, MIIT or NDRC procurement notice naming network switches, whichever lands first. We will record the outcome by December 15, 2026.

ObservedWednesday September 23, 2026. The Financial Times reported that China's State-owned Assets Supervision and Administration Commission, the body that owns and supervises the central state-owned enterprises, has spent recent weeks surveying the presence of Broadcom networking equipment inside state-backed data centres.

The whole observation, as recorded

The finding carried in the report: Broadcom switches account for as much as 90 percent of the data centre networking equipment at the firms surveyed. The report states that the commission may issue informal guidance to reduce the use of Broadcom switches in domestic data centres, as part of the campaign Beijing calls domestic chips for domestic use. No figure is given for the number of firms surveyed, the volume or value of equipment involved, or any timetable. Neither SASAC nor Broadcom has published anything about the survey, and no Chinese ministry has issued a notice. Broadcom shares fell in pre-market trading in New York on the report. The layer being counted is worth naming precisely: a data centre switch moves data between servers and between accelerators, it is not an AI accelerator, and it has never been covered by American export controls on China. Broadcom's Tomahawk and Jericho families dominate that layer worldwide, and the domestic alternatives named in Chinese procurement are Huawei, Centec and a small set of others.

Established

The Financial Times reported on September 23, 2026 that SASAC has surveyed Broadcom networking equipment in state-backed data centres over recent weeks.
The figure carried in the report is that Broadcom switches account for as much as 90 percent of data centre networking equipment at the firms surveyed.
The report says SASAC may issue informal guidance to reduce that use, under the domestic chips for domestic use campaign.
Broadcom shares fell in pre-market trading in New York on the report.

Not established

That any guidance exists. The report describes a possibility, and no notice from SASAC, MIIT or the NDRC has been published.
That 90 percent is the national figure. The share is reported for the firms surveyed, and neither the number of firms nor their size is stated.
That anything has been ordered or cancelled. No procurement decision, contract change or revenue effect has been disclosed by anyone.
That domestic switches can replace them. Substitution requires parts that exist at the needed bandwidth, and the report does not address whether they do.

Why it weighs this much

Signal strength

CostLow

CommitmentLow

ReversibilityHigh

PersistenceYears

Scored low, deliberately, because what has been established is a survey and a possibility. Cost is low: asking state enterprises to count their own equipment costs the commission nothing and commits it to nothing. Commitment is low for the same reason, and would only rise if guidance is actually issued. Reversibility is high, since an unissued guidance can be unissued forever and nobody will ever know. Persistence is nevertheless years, and that is the dial carrying this card: once a state owner has a number for foreign dependency in a layer, that number does not go away, it enters five-year plans and procurement catalogues, and every previous time Beijing has counted a dependency the substitution followed. The weight here is in what was measured, not in what was done.

What to watch

strengthens SASAC, MIIT or the NDRC publishes guidance or a procurement catalogue naming data centre network switches, or Broadcom discloses a decline in China data centre revenue, by March 31, 2027.
weakens No guidance appears and Broadcom reports China data centre revenue flat or higher at its fiscal fourth quarter and first quarter results, the later of which falls by March 31, 2027.

The words

Network switch: The equipment that moves data between servers and between AI accelerators inside a data centre. It is not an AI chip, and large training runs are limited by it as often as by the accelerators themselves.
SASAC: The State-owned Assets Supervision and Administration Commission, which holds the state's ownership of China's central state-owned enterprises and can set procurement expectations across all of them at once.
Domestic chips for domestic use: Beijing's standing policy of replacing imported semiconductors with Chinese-made ones in state-controlled infrastructure. It has so far been applied to processors and accelerators rather than networking.
Export controls: American rules restricting which technologies may be sold to China. They cover AI accelerators and chipmaking equipment, and have never covered data centre switches.

Your call

If the survey is confirmed, which explanation do you believe?

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