vRouter Interfaces Overview

The vRouter interfaces command mode allows you to show and set multiple interfaces on the active vRouter with a single command by using the wildcard symbol. For example, if you set the maximum transmission unit (MTU) for interfaces ip.* within this context, the MTU value is changed on all IP interfaces associated with the vRouter. If you then configure one of the individual interfaces within a separate command mode, the new values are applied to that interface. For example, if you then enter the IP command mode and set the MTU for a specific interface, the MTU is reconfigured, but all the other settings from the vrouter interfaces command remain. You can also use this command to configure multiple interface types without having to move between command modes. For example, you could first change the IP MTU by specifying vSwitch name vRouter name interfaces ip.* MTU 5000, and then change the trap level for link aggregation groups (LAGs) by specifying vSwitch name vRouter name interfaces lag.* eventFilter warning. This method is faster than entering and exiting the IP and LAG command modes to make changes.

Interface types

Interface types	Description
`sock`	Socket. Represents the socket layer that resides above IP. Traffic originates from a socket passes through this layer. The socket layer is created and stacked as a side effect of issuing other commands.
`ip`	IP instance.The interface output in the command displays either just the instance number (assigned by the system and based on the virtual router) or the instance number and an interface index.
`eth`	Ethernet interface. The interface name indicates which Ethernet port is assigned to an interface.
`vlan`	Virtual LAN. Composed of Ethernet ports and/or LAGs, VLANs are groups of segments that appear to be on the same Layer 2 network.
`lag`	Link aggregation group. Multiple Ethernet interfaces configured to aggregate bandwidth and appear as a single logical interface to higher layer interfaces
`loopback`	Loopback layer. IP interfaces to this layer can be created when it is necessary to configure reachable IP addresses on interfaces that are not tied to physical interfaces, and therefore never go down.

Tracing the stack through the system

Protocols are implemented in the system as layer objects, and are stacked or interconnected by layer interfaces. These interfaces pass control and status messages between layers, while the network processors forward traffic. By viewing the output display of the vRouter show interfaces or show interfaces verbose commands, you can trace a connection from the Ethernet port layer to the layers above the port layer. The information provided to you includes the vSwitch and vRouter, the Ethernet port assignments (when applicable), any intervening LAGs or VLANs, the IP instance, and the IP interface.

Note:The ports assigned to a LAG and individual Ethernet ports do not appear in the show interfaces display that you execute from an operated-defined vSwitch. Because Ethernet ports and LAGs are a global system resource, the CLI only displays these components from the system:management context.