Multiple interfaces with IP addresses in the same subnet to a single switch cause only a single link to be used

Solution Verified - Updated -

Issue

  • When multiple Ethernet cards are configured to participate within the same subnet, and connected to the same switch, this results in only one of the network interfaces being actively used for that subnet. Checking the switches ARP table shows that the MAC address for the first interface is the next hop for all four IP addresses.

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 7

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content