Cisco and NVIDIA are developing a new optical form factor for AI data-centre networks, designed to support 1.6Tbps links. Cisco also outlined new switch silicon and a software approach to applying vulnerability protection without waiting for a conventional patch and reboot.
Cisco Watch analysis
What happened
Ahead of the OCP Global Summit, Cisco briefed analysts on announcements spanning optics, switches and software, according to ServeTheHome. The centrepiece is USFP, a pluggable optical module Cisco developed with NVIDIA for 400G SerDes lanes. Cisco says four lanes can deliver 1.6Tbps, with the design intended to support higher-density fabrics. The companies are drafting a multi-source specification so other vendors can build compatible modules.
Cisco also outlined its Silicon One G300, which is already in its first systems, and the G302 top-of-rack switch, expected in the fourth quarter of 2026. The G302 is described as a 51.2T front-end switch using 200G SerDes. The A100L targets lower-cost 1G/10G out-of-band management switching. ServeTheHome says Cisco linked the A100L to hyperscale customers wanting to run SONiC across their infrastructure.
On the software side, Cisco’s Live Protect for SONiC is intended to add runtime vulnerability shielding to N9000 switches, applying policy before an operator can schedule a conventional patch and reboot. Cisco lists availability for Q2 2027 in Cisco-validated SONiC environments. The report says customers will also be able to choose between community or custom SONiC and a Cisco-validated distribution.
Why it matters
AI infrastructure is not just accelerators: data has to move quickly between them, and operators need switches they can manage and protect. A jointly developed module specification could widen the supplier pool for faster optical links, if other vendors adopt it. The switching announcements also span high-capacity fabrics and the less glamorous management network, where Cisco is making a case for custom silicon too.
Live Protect’s pitch is practical: reduce the time a vulnerability sits exposed while teams arrange a patch. But this is a promised capability, not evidence of a particular security outcome, and the stated availability is still in the future.
Our read
There is enough here for more than a chip-speed headline: Cisco is pairing a faster networking path with switches and an operating model for SONiC. USFP’s multi-source specification will be the real test of whether “open” means a broader ecosystem, rather than a joint design with a welcoming sign on the door. Cisco’s licensing model for the A100L remains unclear in ServeTheHome’s account.
What to watch
- Whether Cisco and NVIDIA publish the USFP specification and other vendors build compatible modules.
- What systems ship with the G300 and whether the G302 arrives on its stated Q4 2026 schedule.
- How the A100L will be licensed and priced.
- Whether Live Protect reaches Cisco-validated SONiC environments in Q2 2027, and what its security scope covers.
Discussion spark: Should AI data-centre networking standards be built jointly by chip and network giants such as Cisco and NVIDIA, or should operators demand a broader open process before betting on them?
Sources and evidence
- Source update (13 October 2026, 13:00 UTC)
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