Configuration and Usage
Cumulus NetQ
Hardware and Platform Issues
Storage
Administration
- ★ Recovering the Root Password
- Accessing the BIOS on an x86 Switch
- Bringing up Large Networks Using ip --batch
- DHCP on eth0 Does Not Send Vendor Data
- Displaying Kernel Messages in an SSH Session
- Error seen: hostname kernel: nf_conntrack: table full, dropping packet
Automation
- ★ Cumulus Linux Modules for DevOps Tools
- Ansible: Backing up Existing Configurations
- Ansible: Gathering Facts on Cumulus Linux
- Ansible: Setting up a Basic Lab
- Ansible: Simple Playbook Example with a Quagga Template
- Automating VRR Configuration with Mako
Cables, Optics and Transceivers
- ★ Transceiver and Cable Recommendations
- ★ Transceiver and Cable Self-qualification with Cumulus Linux
- 40G Active Optical Cable (AOC) Doesn't Come Up or Pass Traffic on Boot
- 40G Optical QSFP not Recognized on Edge-Core 5600X
- Can't Configure 10G or 40G Port for 10/100M Speed
- Error seen: portwd invalid SFF identifier
Monitoring
- "sensors" Command Returns Unexpected Output
- "vpd r/w failed" Message from linux-kernel-bde
- Booting into U-Boot
- Configuring and Using sFlow Visualization Tools
- Configuring Net-SNMP Event Notification Traps
- Cumulus Linux as a Sensu Client
Network Configuration
- Calculating the Limitation of a Linux Bridge In Traditional Mode
- Changing ARP timers in Cumulus Linux
- Cumulus Linux Derivation of MAC Address for a Bridge
- dhcprelay requires additional IP rule with cl-mgmtvrf
- Ignoring DHCP Default Route Option For eth0
- Voice VLAN on Cumulus Linux
Network Interfaces
- 20G Stacking Ports Not Supported on Some Hardware
- brctl showstp Shows Carrier Down Ports as Blocking
- Comparing ifupdown2 Commands with ifupdown Commands
- Comparing Traditional Bridge Mode to VLAN-aware Bridge Mode
- Configuring /etc/network/interfaces with a bash Script
- Configuring an Interface to Stay Down at Boot Time
Routing
- BGP add-path RX
- Configuring BGP Unnumbered with Cisco IOS
- Floating Static Routes
- Installing the Cumulus Linux Quagga Package on an Ubuntu Server
- OSPF Configuration not Accepted when Providing Instance ID
- OSPF Unnumbered Interfaces: Some OSPF Interfaces Stuck in INIT State