Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

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Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

Default Management Ethernet interface settings

Updated: July 31, 2026

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This topic lists the default Management Ethernet interface settings that affect configuration and verification.

This table lists the default Management Ethernet interface settings that you can change with manual configuration. The router does not display the default settings in the show running-config output.

Table 1. Management Ethernet interface default settings
Parameter	Default value	Configuration file entry
Speed in Mbps	Default speed is 1G with autonegotiation enabled.	Speed is not configurable.
Duplex mode	Default duplex mode is full-duplex with autonegotiation enabled.	Duplex mode is not configurable.
MAC address	MAC address comes from the hardware burned-in address (BIA).	MAC address is not configurable.

Use these defaults as a baseline when you compare manual changes with the values that the system applies automatically.

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