Cisco SGE2000 - Cisco - Gigabit Switch Administration Guide

Configuring Device Security
Defining DoS Prevention
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4
STEP 3 Click Apply. The DoS prevention global settings are defined, and the device is
updated.
Defining Martian Addresses
Martian Address Filtering enables discarding IP packets from invalid IP addresses.
Martian addresses include packets from a source IP addresses outside or not
used within the configured network. Martian addresses include any address
within the following ranges:
• 0.0.0.0/8 (Except 0.0.0.0/32 as a Source Address) — Addresses in this
block refer to source hosts on this network.
• 127.0.0.0/8 — Used as the Internet host loopback address.
• 192.0.2.0/24 — Used as the TEST-NET in documentation and example
codes.
• 224.0.0.0/4 (As a Source IP Address) — Used in IPv4 Multicast address
assignments, and This formerly known as Class D Address Space.
• 240.0.0.0/4 (Except 255.255.255.255/32 as a Destination Address) —
Reserved address range, and is formerly known as Class E Address Space.
To define Martian Addresses:

Cisco SGE2000 - Cisco - Gigabit Switch Specifications

General

Form Factor	Rack-mountable
Switching Capacity	48 Gbps
Forwarding Rate	35.7 Mpps
Layer	Layer 2
Power Supply	Internal
Management	Web-based, SNMP, CLI
MAC Address Table Size	8000 entries
VLANs	256
Features	Quality of Service (QoS), IGMP snooping, Port mirroring
Dimensions (W x D x H)	440 x 257 x 44 mm (17.3 x 10.1 x 1.73 in)
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20 to 70°C (-4 to 158°F)
Relative Humidity	10% to 90% non-condensing
Standards Compliance	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x