Cumulus Linux vs Cisco NX-OS: Out of Box Experience

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This article explains the default behavior and configuration of Cumulus Linux on a white box switch and similar default behavior and configuration of NX-OS on a Cisco Nexus 3000.

Network OS

Cumulus Linux Cisco Nexus 3000 Series

No network OS is pre-installed on white box hardware

  • Boot up in ONIE
  • ONIE discovery looks for and executes onie-installer

Cisco NX-OS network OS installed before arrival

Default Console Port Setting

Cumulus Linux Cisco Nexus 3000 Series

Connects to serial console port at 115200 baud

Connects to serial console port at 9600 baud

Default Management Configuration

Cumulus Linux Cisco Nexus 3000 Series
  • hostname = <manufacturer name/device SKU> (for example, dni7448)
  • Configure eth0 in /etc/network/interfaces (default is DHCP)
  • Loopback (lo) preconfigured in /etc/network/interfaces
  • Set hostname, DNS, NTP, DCHP relay agent
  • Syslog enabled by default and messages are sent to /var/log/
  • hostname = "switch"
  • eth0 preconfigured
  • loopback preconfigured
  • DNS, NTP, DCHP relay agent enabled
  • Syslog enabled and messages appear on console

Default Switch Port Configuration

Cumulus Linux Cisco Nexus 3000 Series
  • All data plane switch ports are disabled
  • MTU set to 1500
  • Flow control disabled
  • LLDP enabled
  • STP disabled
  • All switch ports in same bridge domain
  • All ports configured in VLAN 1
  • MTU set to 1500
  • Flow control disabled
  • CDP (LLDP) enabled
  • STP enabled on all VLANs

Get started with Cumulus Linux by reading the quick start guide.

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