BSR 2000 Configuration and Management Guide
Release 1.0
6-84
MGBI
526360-001-00 Rev. B
docsis-1.1
enables/disables concatenation for DOCSIS 1.1 cable modems only.
Configuring AntiVirus/AntiWorm Protection
The BSR supports a configurable antivirus/antiworm feature that enables operators to
filter (drop) worm/virus packets on both the upstream and downstream cable
interfaces.
Using the
cable deny ip
CLI command, operators specify the IP protocol used by the
virus or worm and its packet length (in bytes) to enable a filter for a particular threat.
For example, to handle the Nachi worm the CMTS must be able to filter 92-byte
ICMP packets both upstream and downstream.
This feature is disabled by default and must be explicitly enabled by the operator. The
ACCPKT event system keeps track of the number of dropped packets in the upstream
and downstream directions using the ACCPKT.33 and ACCPKT.68 events.
Use the
cable deny ip
command to create and implement a filter that will filter (drop)
the virus or worm from the cable network.
Before creating a filter you must know the following:
■
Number of the IP protocol used by the threat (virus or worm)
■
The size (in bytes) of the virus or worm
Use the
cable deny ip
command from Cable Interface Configuration Mode To create
a filter for a specific threat, as follows:
MOT
(config-if)
#
cable deny ip
<
0-255
> <
20-65535
>
where:
0-255
is a numeric value indicating which IP protocol number to drop.
20-65535
is the length in bytes indicating the size of the IP packet to drop.
Note:
Concatenation must be enabled globally with the
cable upstream
concatenation
command before any setting specified with the
cable
concatenation
command is valid. Once concatenation is enabled globally,
the
cable concatenation
command will enable or disable concatentation for
DOCSIS 1.0 and 1.1 cable modems only and concatenation will always be
enabled for DOCSIS 2.0 cable modems regardless of any setting specified
with this command.
Содержание BSR 2000
Страница 1: ...BSR 2000 Configuration and Management Guide 526360 001 00 Rev B Release 1 0 MGBI ...
Страница 6: ... Motorola Motorola Motorola Motorola Motorola Motorola Motorola Motorola Motorola ...
Страница 50: ......
Страница 130: ......
Страница 164: ......
Страница 458: ......
Страница 490: ......
Страница 580: ......
Страница 632: ......
Страница 648: ......
Страница 649: ......
Страница 650: ...526360 001 00 Rev B 7 06 MGBI Visit our website at www motorola com ...