Cisco 3945 User Manual

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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Configuring Radio Settings
Configuring the Ethernet Encapsulation Transformation Method
DETAILED STEPS
Use the dot11 extension aironet command to enable Aironet extensions if they are disabled.
Configuring the Ethernet Encapsulation Transformation Method
When the wireless device receives data packets that are not 802.3 packets, the wireless device must
format the packets to 802.3 by using an encapsulation transformation method. These are the two
transformation methods:
• 802.1H—This method provides optimum performance for Cisco wireless products.
• RFC 1042—Use this setting to ensure interoperability with non-Cisco wireless equipment.
RFC1042 does not provide the interoperability advantages of 802.1H but is used by other
manufacturers of wireless equipment.
To configure the encapsulation transformation method, follow these steps, beginning in privileged EXEC
mode.
SUMMARY STEPS
1. configure terminal
2. interface dot11radio {0| 1}
3. payload-encapsulation {snap | dot1h}
4. end
5. copy running-config startup-config
Command Purpose
Step 1
configure terminal Enters global configuration mode.
Step 2
interface dot11radio {0| 1} Enters interface configuration mode for the radio interface.
The 802.11g/n 2.4-GHz radio is radio 0.
The 802.11n 5-GHz radio is radio 1.
Step 3
no dot11 extension aironet Disables Aironet extensions.
Step 4
end Returns to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Saves your entries in the configuration file.

Cisco 3945 Specifications

General

Form Factor	Rack-mountable
Maximum Throughput	75 Mbps
Product Type	Router
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Operating System	Cisco IOS
Flash Memory	256 MB
Network/Transport Protocol	IPSec
Remote Management Protocol	SNMP
Encryption Algorithm	DES, AES
Features	Firewall, VPN, Quality of Service (QoS), VLAN support
Interfaces	2 x USB
Security Features	Intrusion Prevention System (IPS)
Operating Temperature	32 °F to 104 °F (0 °C to 40 °C)
Storage Temperature	-4 °F to 149 °F (-20 °C to 65 °C)
Humidity	10 - 85% (non-condensing)
Memory	2 GB
Expansion Slots	4 (free) x EHWIC ¦ 2 x service module ¦ 1 x ISM ¦ 1 x CompactFlash Card