How To Configure Abc - HP J3100B Installation And Configuration Manual

Advanced Concepts
Automatic Broadcast Control (ABC)
Reducing RIP and SAP Broadcast Traffic. You can also configure ABC to
limit IP RIP and IPX RIP and SAP broadcasts, which can further reduce
broadcast traffic on your network. RIP and SAP broadcasts are normally
forwarded on all ports. However, with ABC enabled and additional RIP and
SAP parameters configured, the switch will forward IP RIP and IPX RIP and
SAP broadcasts only to the ports on which these types of broadcasts have
been received earlier. This means that other ports are relieved of some
unnecessary traffic because the RIP and SAP broadcasts will be forwarded
only to ports where there are routers or servers that would use the broadcast
information.

How To Configure ABC

In the factory default configuration, ABC is disabled. If multiple VLANs are
configured, you can configure ABC on a per-VLAN basis. Otherwise, the
configuration is on the switch level. You can enable ABC for IP only, IPX only,
or for both. When ABC is disabled (the default), all broadcasts are sent out
either all ports in the switch or, if VLANs are configured, out all ports in VLANs
where ABC is disabled. ABC can be enabled with the options described below.
Enabling IP Only
Enabling ABC for IP causes the switch to send a proxy ARP reply for hosts
whose addresses the switch has learned. Enabling for IP also:
Enabling IPX Only
Enabling ABC for IPX causes the switch to send a proxy NSQ (nearest server
query) reply for services the switch has learned. Enabling for IPX also:
7-32
Allows you to choose whether to enable ABC for IP RIP Control. If
enabled, IP RIP Control causes IP RIP broadcasts to be forwarded only
to ports where IP RIPs have been previously received. This avoids sending
IP RIP broadcasts to ports where there is no indication of devices that
would use them.
Activates a broadcast limit for either all ports in the switch or, if VLANs
are configured, for all ports in the selected VLAN. (You can accept the
default broadcast limit setting, change it, or turn it off.)
Allows you to choose whether to enable ABC for IPX RIP/SAP control. If
enabled, IPX RIP/SAP control causes IPX RIP and SAP broadcasts to be
forwarded only to ports where IPX RIPs and SAPs have previously been
received. This avoids sending IPX RIP and SAP broadcasts to ports where
there is no indication of devices that would use them.