Configuring A Network Port; Enabling Periodic Gateway Probe; Specifying The Ip Addresses Of Servers - HP 5920 Series Configuration Manual

Configuring a network port

Step
1. Enter system view.
Enter Layer 2 Ethernet
2.
interface view or Layer 2
aggregate interface view.
3. Configure the port as a
network port.

Enabling periodic gateway probe

You can configure the MFF device to detect gateways periodically for the change of MAC addresses by
sending forged ARP packets with 0.0.0.0 as the source IP address and bridge MAC address as the
source MAC address.
The time interval for sending gateway probes is 30 seconds.
This feature is supported by MFF manual mode.
To enable periodic gateway probe:
Step
1. Enter system view.
2. Enter VLAN view.
3. Enable periodic gateway
probe.

Specifying the IP addresses of servers

You need to maintain a server list on the MFF device. The list contains the IP addresses of servers in the
network to ensure communication between the servers and clients.
The server IP address can be the address of a server providing some other service, or the address of an
interface on a router in a VRRP group. After you specify a server's IP address and then an ARP request
from the server is received, the MFF device searches IP-to-MAC address entries, and reply with the
corresponding MAC address to the server. As a result, packets from a host to a server are forwarded by
the gateway, but packets from a server to a host are not forwarded by the gateway.
MFF does not check whether the IP address of a server is on the same network segment as that of a
gateway. Instead, it checks whether the IP address of a server is all-zero or all-one. An all-zero or all-one
server IP address is invalid.
You can specify a server's IP address in manual MFF mode.
Command
system-view
•
Layer 2 Ethernet interface
view:
interface interface-type
interface-number
•
Layer 2 aggregate interface
view:
interface bridge-aggregation
interface-number
mac-forced-forwarding
network-port
Command
system-view
vlan vlan-id
mac-forced-forwarding gateway
probe
348
Remarks
N/A
Use either command.
By default, the port is a user port.
Remarks
N/A
N/A
By default, this feature is
disabled.