Enabling Forwarding Of Directed Broadcasts To A Directly Connected Network; Configuration Example - 3Com S7906E Configuration Manual

To do...
Enter system view
Enable the device to receive
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...
Enter system view
Enter interface view
Enable the interface to forward
directed broadcasts
Currently, the ip forward-broadcast [ acl acl-number ] command is not supported by the S7900E
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
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 1-1 Network diagram for receiving and forwarding directed broadcasts
Configuration procedure
Configure Switch A
# Enable Switch A to receive directed broadcasts.
Use the command...
system-view
ip forward-broadcast
Use the command...
system-view
interface interface-type
interface-number
ip forward-broadcast [ acl
acl-number ]
1-1, the host's interface and VLAN-interface 3 of Switch A are on the same network
—
Required
By default, the switch is disabled
from receiving directed broadcasts.
—
—
Optional
1-2
Remarks
Remarks