Introducing Cumulus RMP
Cumulus RMP is a network operating system in a ready-to-deploy solution that enables out-of-band management for web-scale networks. It provides an open platform for customers and system integrators to use as is or on which to build rack management applications.
Cumulus RMP shares the same architecture, foundation, and user experience with Cumulus Linux. However, the feature set is customized to the needs of out-of-band management. For a comparison of the features supported in Cumulus RMP, see below.
You can also find more information about Cumulus RMP here.
What’s New in Cumulus RMP
Starting with Cumulus Linux 4.0.0, the Cumulus RMP uses the same binary image as Cumulus Linux.
Cumulus RMP 3.7.0 contains several bug fixes and the following new features:
- RADIUS Change of Authorization (CoA) requests
- RADIUS AAA local fallback authentication
- TACACS+ local fallback authentication
- New NCLU commands:
For further information regarding bug fixes and known issues present in the 3.7 release, refer to the product release notes.
What’s New in Cumulus RMP 3.6.2
Cumulus RMP 3.6.2 contains several bug fixes and the following new feature:
- NCLU commands available for configuring traditional mode bridges
For further information regarding bug fixes and known issues present in the 3.6.2 release, refer to the product release notes.
What’s New in Cumulus RMP 3.6.0
Cumulus RMP 3.6.0 contains several bug fixes and the following new feature:
- Support for a combination of
For further information regarding bug fixes and known issues present in the 3.6.0 release, refer to the product release notes.
Cumulus RMP Features
Cumulus RMP shares much of the same functionality as Cumulus Linux and comes preinstalled on your choice of 1G switches. For more information about each feature, follow the links below to the Cumulus Linux user guide:
|Layer 2 Support||Cumulus RMP||Cumulus Linux|
|Spanning tree protocol/RST||✓||✓|
|802.1Q VLAN tagging||✓||✓|
|IGMP and MLD snooping||✓|
|Unicast/broadcast storm control||✓|
|Layer 3 Support||Cumulus RMP||Cumulus Linux|
|ECMP resilient hashing||✓|
|Virtual routing and forwarding (VRF)||✓|
|Additional Functionality||Cumulus RMP||Cumulus Linux|
|Network command line utility||✓||✓|
|Interface configuration & management||✓||✓|
|Zero-touch OS install & upgrade||✓||✓|
|Installation and package management||✓||✓|
|Full Linux extensibility||✓||✓|
|Network virtualization (VXLAN, EVPN, etc.)||✓|
|Monitoring & troubleshooting||✓||✓|
|ACLs / Netfilter||✓||✓|
Setting up a Cumulus RMP Switch
The quick start guide walks you through the steps necessary for getting your Cumulus RMP switch up and running after you remove it from the box.
Caveats and Errata
Dynamic MAC Address Learning Delays
On Cumulus RMP switches, during an STP topology change or an interface flap, the following symptoms could be observed:
- A dynamic MAC address learned on the switch can take a long time to get populated back into the kernel, even though the MAC address has already been updated in hardware.
- The update of MAC learning can take a much longer time than expected, causing the MAC address to point to the wrong interface in hardware and not show up in the kernel, which leads to traffic disruption.
These symptoms have only been observed on Cumulus RMP switches; Cumulus RMP is meant to be used for out-of-band management purposes. Other platforms do not exhibit this issue.