Chapter 15: Ethernet Services and Interfaces (CLI) Configuring Ethernet Interfaces (CLI)phn-3963_008v000Page 15-29Configuring the C-VLAN Ethertype (CLI)The system C-VLAN Ethertype is set by the system as 0x8100.To display the system C-VLAN ethertype, enter the following command in root view:root> ethernet generalcfg ethertype show cvlanConfiguring the MRU (CLI)To define the global size (in bytes) of the Maximum Receive Unit (MRU), enter the following command in rootview:root> ethernet generalcfg mru set size To display the system MRU, enter the following command in root view:root> ethernet generalcfg mru showTable 106 Configure MRU CLI ParametersParameter Input Type Permitted Values Descriptionsize Number 64 to 9612 Defines the global size (in bytes) of theMaximum Receive Unit (MRU). Framesthat are larger than the global MRU will bediscarded.ExampleFor example, the following command sets the system MRU to 9612:root> ethernet generalcfg mru set size 9612Configuring Ethernet Interfaces (CLI)Related Topics:• Enabling the Interfaces (CLI)• Performing Ethernet Loopback (CLI)• Configuring Ethernet Services (CLI)• Quality of Service (QoS) (CLI)P-20's switching fabric distinguishes between physical interfaces and logical interfaces. Physical and logicalinterfaces serve different purposes in the switching fabric. In some cases, a physical interface corresponds to alogical interface on a one-to-one basis. For some features, such as LAG, a group of physical interfaces can be joinedinto a single logical interface.The basic interface characteristics, such as media type, port speed, duplex, and auto-negotiation, are configuredon the physical interface level. Ethernet services, QoS, and OAM characteristics are configured on the logicalinterface level.
