H3C Technologies H3C S7500E Series Switches - Manual (Page 111)

11-2
Follow these steps to enable the device to receive directed broadcasts:
To do… Use the command… Remarks
Enter system view system-view —
Enable the device to receive
directed broadcasts
ip forward-broadcast
Required
By default, the switch is disabled from
receiving directed broadcasts.
Enabling Forwarding of Directed Broadcasts to a Directly Connected Network
Follow these steps to enable the device to forward directed broadcasts:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Enable the interface to forward
directed broadcasts
ip forward-broadcast [ acl
acl-number ]
Optional
Currently, the ip forward-broadcast [ acl acl-number ] command is not supported by the S7500E
series Ethernet switches. By default, the devices allow forwarding of directed broadcasts to a directly
connected network.
Configuration Example
Network requirements
As shown in Figure 11-1 , the host’s interface and VLAN-interface 3 of Switch A are on the same
network segment (1.1.1.0/24). VLAN-interface 2 of Switch A and VLAN-interface 2 of Switch B are on
another network segment (2.2.2.0/24). The default gateway of the host is VLAN-interface 3 (IP address
1.1.1.2/24) of Switch A. Configure a static route on Switch B to enable the reachability between host
and Switch B.
It is required that directed broadcasts from the host to IP address 2.2.2.255 be received by Switch B.
Figure 11-1 Network diagram for receiving and forwarding directed broadcasts