User`s guide

Filters
5-27
Note: In order for this trap to work, you must have
ConfigAlarmDynamic set and your NMS must be able to
process traps from the ATX.
Example 5 — Configuring a firewall filter to control
multicasts
To optimize network performance, you can configure filters to
reduce multicasts (packets broadcast to multiple destinations).
Furthermore, you can prevent multicasts of packets of a particular
protocol type. In this example, four LANs are interconnected by an
ATX (Figure 5-4). The objective is to prevent LAN 1 from sending
AppleTalk I multicasts to LANs 2 and 3, yet allow AppleTalk I
multicasts from LAN 1 to LAN 4. The filter described below is a
firewall filter; it acts as a barrier to protect the network from a
condition that may degrade network performance.
Figure 5-4. Using Firewall Filters To Reduce Multicasts
POWER STATUS ENGINE STATUS TURBO STATUS SUPPLY A SUPPLY B 1.6 Gbps
RESET
PACKET PROCESSING ENGINE
NMS PORT
POWER
FastNET ATX
TM
OFFLINE
PROC
PWR
OCTAL IEEE 802.3 / ETHERNET 10BASE-T
3X 4X 5X 6X 7X 8X2X1X
SEGMENT
LINK
ACT
COL
12345678
OFFLINE
RING 1
RX ST
RING 2
RX ST
RING 3
RX ST
RING 4
RX ST PROC
TX 16 TX 16 TX 16 TX 16 PWR
QUAD IEEE 802.5 TOKEN RING (UTP)
OFFLINE
RX
LK
TX
QUAD FAST ETHERNET / 802.3 100BASE-FX
TX RX
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
LK
TX
RX
LK
TX
RX
LK
TX
PROC
PWR
TX RX TX RX TX RX
OFFLINE
TX PWR
INTELLIGENT FDDI
RING A
RING B
THRU
WRAP RX
PROC
FDDI MIC A FDDI MIC BOPTICAL BYPASS
MULTI-MODE MULTI-MODE
OFFLINE
PROCRX
TX
PWR
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
TX
RX
TX
RX
TX
OFFLINE
PROCRX
TX
PWR
QUAD IEEE 802.3 / ETHERNET 10BASE2
SEGMENT 4SEGMENT 3SEGMENT 2 SEGMENT 1
RX
TX
RX
TX
RX
TX
LAN 1 LAN 2
LAN 3
LAN 4
ATX