NetWorker: Unable to bind socket to port 0 from connection port range 0-0: Cannot assign requested address.

Summary: High activity on the NetWorker server is consuming ports.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

NetWorker protection operations (backups, clones, so forth) are failing.
The NetWorker daemon.raw log file reports the following error for various NetWorker operations and processes:

Unable to bind socket to port 0 from connection port range 0-0: Cannot assign requested address.

Cause

This issue can appear on large NetWorker environments with a lot of jobs running. NetWorker ports are consumed, and additional processes are unable to start.

NetWorker Processes and Ports

Resolution

See the NetWorker Performance Optimization and Planning Guide. https://www.dell.com/support/product-details/product/networker/docs

Follow the recommendations outlined in the following sections:

  • Operating system TCP stack optimization
  • System components (CPU and Memory configuration requirements)
  • NetWorker kernel parameter requirements

The Performance Optimization guides are NetWorker version specific. See the guide specific to your NetWorker server version for any specific or new optimizations for your NetWorker server version.

Affected Products

NetWorker

Products

NetWorker
Article Properties
Article Number: 000170370
Article Type: Solution
Last Modified: 17 Jun 2025
Version:  3
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.