most often used to restrict traffic coming from LAN, through
BandwidthManager
, and on to the router/Layer 3 device.
The six modes are as follows:
General Modes:
•
All Protocols
— Forwards ALL traffic. Can use this mode as a
generic mode for incoming traffic to be forwarded on to the LAN.
•
IP/ARP Only
— Forwards all IP/ARP traffic; blocks all other proto-
cols. Because this mode allows all IP/ARP traffic to pass through,
this is the recommended mode for traffic coming from the Internet
to the LAN.
Inclusionary Modes:
•
Non-IIP/ARP, Plus IP/ARP Range
— Allows all non-IP traffic to pass;
forwards only IP/ARP packets that fall into a specified range, dis-
carding all other IP/ARP traffic.
•
IP/ARP Range Only
— Like previous mode, but blocks all non-IP
traffic as well.
Exclusionary Modes:
•
All Protocols, Minus IP/ARP Range
— Forwards everything except
what is specified in IP address range, including non-IP traffic.
•
IP/ARP Only, Minus IP/ARP Range
— Forwards all IP/ARP packets
except what is specified in IP address range; discards non-IP traffic.
Because this is the most efficient mode for blocking unnecessary
traffic from reaching the router (unless using a non-IP protocol), this
is the recommended mode for traffic coming from the LAN to the
WAN/Internet.
Set the packet filtering mode based on the FIRST
BandwidthManager
port (Port A or Port B) the traffic will come in contact with.
A
D D I T I O N A L
C
O N F I G U R A T I O N F O R
P
A C K E T
F
I L T E R I N G
M
O D E S
When using an inclusionary or exclusionary mode, you will also need
to enter values for the following:
Required
(
all inclusionary/exclusionary modes
):
•
Base IP
— A four-byte address that tells
BandwidthManager
the
common portion of the IP addresses for whose packets should be
discarded (excluded) or forwarded (included), depending on mode.
To specify the Base IP, place a “0” in each byte of the address
which is NOT common to all packets. For example, if you want
BandwidthManager
to block traffic for IP addresses 192.168.193.1
About iView
Once
BandwidthManager
is assigned an IP address, you can use
iView
or another SNMP-based Network Management System (NMS) application
to configure and remotely manage
BandwidthManager
.
iView
is a cross-platform network management application for
Black Box intelligent networking devices. It gives network managers the
ability to monitor and control Black Box’ products from virtually any 32-
bit Windows platform.
iView
can also function as a snap-in module for
many SNMP applications. Please consult the
iView
installation guide or
iView
CD for assistance in installing and launching
iView
.
About Bandwidth Control
BandwidthManager
has the ability to forward data in each direction (A
to B and B to A) at up to 10 Mbps. You can set either or both directions
to pass less than that (i.e., bandwidth control).
The bandwidth speed may be set independently for each port. As the
actual Ethernet bit rate is always 10 Mbps, the bandwidth speed limitation
for each port operates by extending the time between Ethernet packets so
that the aggregate data rate matches the bandwidth setting. The algo-
rithm used is intelligent enough to adjust “on-the-fly” to the length of
each packet, resulting in a high degree of precision (within 5%).
To set the bandwidth via
iView
, simply input the desired bandwidth for
this port in the
Bandwidth Control
section of the
Port
window (min: 64
bits/sec, max: 10,000,000 bits/sec). To set bandwidth via Serial
Configuration, see the
Setting Bandwidth
on page 4.
Packet Filtering Modes
BandwidthManager
provides six modes for forwarding/discarding frames
that come in contact with the device which can be configured from the
Advanced
Window in
iView for BandwidthManager
. These packet filtering
modes should be configured individually for each data port (A and B).
The first two modes, All Protocols (default) and IP/ARP Only, allow all
or almost all network traffic to pass through
BandwidthManager
. These
modes are used most often for traffic coming from the WAN or Internet,
through the router and
BandwidthManager
, and on to the LAN. The other
four modes use specific IP address ranges, defined by the user, to tell
BandwidthManager
to either pass on or discard traffic based upon its des-
tination IP. These modes are either inclusionary or exclusionary, and are
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