3com S7906E 설치 설명서

 

1-12 

Create an IRF port and enter 
IRF port view 

irf-port member-id/port-number 

Required 

By default, no IRF port is 
created on the device. 

If the IRF port is already 
created, this command enters 
IRF port view. 

Bind physical IRF port(s) to an 
IRF port 

port group interface 
interface-type interface-number 
[ mode { enhanced | normal } ] 

Required 

By default, no IRF port is 
created on the device. 

 

z 

An IRF port that is bound with multiple physical IRF ports is an aggregation IRF port, which 

increases the bandwidth and reliability on the IRF port. 

z 

You can bind multiple physical IRF ports to one IRF port by executing the port group interface 

command for multiple times. In addition, the S7900E series allows you to bind multiple physical IRF 

ports on different LPUs to one IRF port. 

z 

Before binding a physical IRF port to an IRF port or canceling such a binding, you must manually 

disable the physical IRF port (that is, execute the shutdown command on the port). After finishing 

your operation, you should manually enable the physical IRF port (that is, execute the undo 

shutdown command on the port). 

z 

The mode keyword in the port group command specifies the working mode of a physical IRF port. 

By default, the working mode of a physical IRF port is normal. An SC interface card does not 

support configuration of the working mode of physical IRF ports as enhanced. 

z 

Physical IRF ports that connect two member devices in an IRF must be configured to work in the 

same mode. 

z 

To use the virtual private LAN service (VPLS) function in an IRF, configure the working mode of 

physical IRF ports as enhanced. 

 

A device uses the bridge MAC address when it communicates with the outside as a network bridge. A 

bridge device on the network has its unique bridge MAC address. Some Layer 2 protocols (like LACP) 

use bridge MAC addresses to identify different devices. During the forwarding of Layer 2 packets, if the 

destination MAC address of a packet is the bridge MAC address of a device, it means that the packet is 

sent to this device. 

In an IRF, the bridge MAC address of a member device is called member bridge MAC address. The IRF 

communicates with the outside as a single device; therefore, it also has a bridge MAC address, which is 

called the IRF bridge MAC address. Typically, an IRF uses the bridge MAC address of the master 

device as the IRF bridge MAC address. 

You are recommended to configure the preservation time of IRF bridge MAC address properly, 

otherwise, network problems will occur: