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Key Concepts
213
Key Concepts
Before you use packet filters, review the following key concepts and
terms:
■
Standard Filters
— Packet filters that are supplied with the
CoreBuilder 3500 that the hardware executes at wire speed. You can
load them from the Administration Console, or select them from the
set of predefined filters with the Filter Builder application. (Filter
Builder is part of the Web Management suite of applications. See
Table 30 later in this chapter.)
One standard hardware filter is supported: the portGroup (rejdiffportgrp)
filter.
■
Custom Filters
— Packet filters that are executed in software. You
create custom filters in any of these ways:
■
By writing a filter definition using the filter definition language.
■
By selecting from among the predefined custom filters provided by
the Filter Builder application.
■
By using the Filter Builder’s wizards to construct a new filter. (See
Table 30 later in this chapter.)
■
Predefined filters
— Hardware and software filters that are supplied
with the Filter Builder application. Filter Builder provides one standard
filter that is executed by the hardware; the others are custom filters
that are executed in software. (See Table 30 later in this chapter.)
■
Port Groups
— A collection of ports that you can reference in a
packet filter. You create port groups from the Administration Console.
You can specify different filtering rules between various port groups.
Standard Packet
Filters
The CoreBuilder 3500 hardware supports standard packet filters.
Standard filters are implemented in the ASIC hardware to achieve the
wirespeed performance. To load them, use the Administration Console’s
bridge packetfilter create
command.
At present, one standard hardware filter is supported: the portGroup
(rejdiffportgrp) filter.
Standard packet filter support in the hardware is limited to the
receive all
and
transmit all
paths. Hardware filtering on the
receive multicast,
transmit multicast,
and
receive internal
paths is not available; therefore, if
you assign a standard filter to one of these paths, the system implements
the filter in the software, which can affect performance.
Summary of Contents for CoreBuilder 3500
Page 44: ...44 CHAPTER 2 MANAGEMENT ACCESS ...
Page 58: ...58 CHAPTER 3 SYSTEM PARAMETERS ...
Page 86: ...86 CHAPTER 5 ETHERNET ...
Page 112: ...112 CHAPTER 6 FIBER DISTRIBUTED DATA INTERFACE FDDI ...
Page 208: ...208 CHAPTER 9 VIRTUAL LANS ...
Page 256: ...256 CHAPTER 10 PACKET FILTERING ...
Page 330: ...330 CHAPTER 12 VIRTUAL ROUTER REDUNDANCY PROTOCOL VRRP ...
Page 356: ...356 CHAPTER 13 IP MULTICAST ROUTING ...
Page 418: ...418 CHAPTER 14 OPEN SHORTEST PATH FIRST OSPF ...
Page 519: ...RSVP 519 Figure 94 Sample RSVP Configuration Source station End stations Routers ...
Page 566: ...566 CHAPTER 18 DEVICE MONITORING ...
Page 572: ...572 APPENDIX A TECHNICAL SUPPORT ...
Page 592: ...592 INDEX ...