AWS AWSEC2 documentation change

Service: AWSEC2 · 2025-09-10 · Documentation low

File: AWSEC2/latest/UserGuide/efa-acc-inst-types.md

Summary

Added documentation for P6-B200 instances EFA configurations including network bandwidth details and use case examples

Security assessment

The changes describe technical specifications and configuration options for new instance types without any security-related content or vulnerability mitigation mentioned.

Diff

diff --git a/AWSEC2/latest/UserGuide/efa-acc-inst-types.md b/AWSEC2/latest/UserGuide/efa-acc-inst-types.md
index 1232d855e..8e408455d 100644
--- a//AWSEC2/latest/UserGuide/efa-acc-inst-types.md
+++ b//AWSEC2/latest/UserGuide/efa-acc-inst-types.md
@@ -5 +5 @@
-EFA configuration for a P5 instancesEFA configuration for a P6e-GB200 instances
+EFA configuration for a P5 instancesEFA configuration for a P6-B200 instancesEFA configuration for a P6e-GB200 instances
@@ -236,0 +237,24 @@ The following example illustrates this configuration:
+## EFA configuration for a P6-B200 instances
+
+P6-B200 instances have a total network bandwidth capacity of 3,200 Gbps, of which up to 1600 Gbps can be utilized for ENA. They have 8 GPUs and 8 network cards, where each network card supports up to 400 Gbps EFA bandwidth and 200 Gbps ENA bandwidth. Since EFA and ENA traffic share the same underlying resources, bandwidth used by one will reduce the bandwidth that is available to the other.
+
+###### Use case 1: Save IP addresses
+
+This configuration consumes at least one private IP address per instance and supports up to 3200 Gbps of EFA bandwidth and 200 Gbps of ENA bandwidth.
+
+  * For the primary network interface (network card index 0, device index 0), use an EFA (EFA with ENA) network interface.
+
+  * For the remaining 7 network cards (network card indexes 1-7, device index 1), use EFA-only network interfaces.
+
+
+
+
+###### Use case 2: Maximum EFA and ENA bandwidth
+
+This configuration consumes at least 8 private IP address per instance and supports up to 3200 Gbps of EFA bandwidth and 1600 Gbps of ENA bandwidth.
+
+  * For the primary network interface (network card index 0, device index 0) and the remaining 7 network cards (network card indexes 1-7, device index 1), use EFA (EFA with ENA) network interfaces.
+
+
+
+