Cisco Cisco Packet Data Gateway (PDG) Ratgeber Für Administratoren

System Interfaces and Ports

Ethernet Interfaces and Ports ▀

Cisco ASR 5000 System Administration Guide ▄

Ethernet Interfaces and Ports

Regardless of the type of application interface, the procedure to create and configure it consists of the following:

Step 1

Create an interface and assign an IP address and subnet mask to it by applying the example configuration in

Creating an

Interface.

Step 2

Assign a physical port for use by the interface and bind the port to the interface by applying the example configuration
in

Configuring a Port and Binding It to an Interface.

Step 3

Optionally configure a static route for the interface by applying the example configuration in

Configuring a Static Route

for an Interface.

Step 4

Repeat the above steps for each interface to be configured.

Important:

This section provides the minimum instructions for configuring interfaces and ports to allow the

system to communicate on the network. Commands that configure additional interface or port properties are described
in the Ethernet Port Configuration Mode Commands and Ethernet Interface Configuration Mode Commands chapters
of the Command Line Interface Reference.

Caution:

To ensure that system line card and port-level redundancy mechanisms function properly, the

Spanning Tree protocol must be disabled on devices connected directly to any system port. Failure to turn off the
Spanning Tree protocol may result in failures in the redundancy mechanisms or service outage.

Creating an Interface

Use the following example to create a new interface in a context:

configure

context context_name

interface name

{ ip | ipv6 } address address subnetmask [ secondary ]

end

Notes:



Optional: Add the loopback keyword option to the interface name command, to set the interface type as

“loopback” which is always UP and not bound to any physical port.



Optional: Add the secondary keyword to the { ip | ipv6 } address command, to assign multiple IP addresses to

the interface. IP addresses can be entered using IPv4 dotted-decimal or IPv6 colon-separated-hexadecimal
notation.



Optional: In the interface config mode, add the port-switch-on-L3-fail address command, to configure the

interface for switchover to the port on the redundant line card if connectivity to a specified IP address is lost.
This IP address can be entered using IPv4 dotted-decimal or IPv6 colon-separated-hexadecimal notation.