ACL rules for the core switch are not working

Industry
May 18, 2026

Configuring Access Control Lists

IP ACLs have implicit rules, which means that although these rules do not appear in the running configuration, the switch applies them to traffic when no other rules in an ACL match.

Read More 6,643
Industry
Aug 08, 2025

A workaround for ACL troubleshooting on a Nexus 9K

During the weekend I came with a very simple workaround. When a user reports he cannot reach something he could before the ACL was in place, I put a small (inbound) ACL on his client vLan

Read More 7,870
Industry
Dec 17, 2025

Troubleshooting ACL Resource Insufficiency on S Series Switches

When ACL resources are insufficient, ACLs will fail to be applied or an ACL resource insufficiency alarm will be generated. This document describes the fundamentals of ACL resources, the causes of ACL

Read More 7,660
Industry
May 12, 2026

ACLs rules not working as expected | NETGEAR Communities

I am facing an issue with my ACLs configuration across the board, and I need some assistance to resolve it. I have set up several rules under IP extended...

Read More 427
Industry
Jun 17, 2026

IPv4 ACL configuration and operating rules

For a summary of IPv4 and IPv6 ACL resource limits, see the appendix covering scalability in the latest management and configuration guide for your switch.

Read More 5,238
Industry
Mar 18, 2026

Fixing Common Issues in ACL Access Control

From misconfigured rules to inconsistent setups, even small errors in an ACL can open up security gaps or slow down performance. Let''s break down a few common issues and what can

Read More 2,265
Industry
Apr 12, 2026

Configuring ACLs

Access Control Lists (ACLs) are an ordered set of rules that you can use to filter traffic. Each rule specifies a set of conditions that a packet must satisfy to match the rule. When the switch determines

Read More 402
Industry
Oct 21, 2025

Dell Networking SmartFabric OS10 S5200 series Egress ACL applied

This KB describes the points to note when applying Egress ACL on the S5200 series platform.

Read More 6,274
Industry
Feb 08, 2026

Switch ACL Rules don''t appear to work

Switch ACL does not support stateful ACL. When you block one side to another, it, of course, Switch ACL is stateless and it blocks the one direction access/ping to the other, the reply

Read More 3,080
Industry
Feb 21, 2026

Apply ACL on HP Core Switch 5400

I need to apply some ACLs to block the users'' subnet (192.168.77.0) from reaching out to the server''s network (192.168.1.0) but allow them to access some Ports on the Servers and able to

Read More 4,635

High-Density Fiber & AI Interconnect Insights

Need High-Density Fiber Solutions?

Contact us today for product inquiries, custom assemblies, or technical support