Cisco 2911 Configuration Guide

286
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Configuring Radio Settings
Enabling and Disabling Public Secure Packet Forwarding
DETAILED STEPS
Enabling and Disabling Public Secure Packet Forwarding
Public Secure Packet Forwarding (PSPF) prevents client devices that are associated to an access point
from inadvertently sharing files or communicating with other client devices that are associated to the
access point. PSPF provides Internet access to client devices without providing other capabilities of a
LAN. This feature is useful for public wireless networks like those installed in airports or on college
campuses.
Note To prevent communication between clients associated to different access points, you must set up
protected ports on the switch to which the wireless devices are connected. See the “Configuring
Protected Ports” section on page 287 for instructions on setting up protected ports.
To enable and disable PSPF using command-line interface (CLI) commands on the wireless device, you
use bridge groups. You can find a detailed explanation of bridge groups and instructions for
implementing them in this document:
• Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.2. Click this link to
browse to the Configuring Transparent Bridging chapter:
http://www.cisco.com/en/US/docs/ios/12_2/ibm/configuration/guide/
bcftb_ps1835_TSD_Products_Configuration_Guide_Chapter.html
PSPF is disabled by default. To enable PSPF, follow these steps, beginning in privileged EXEC mode.
SUMMARY STEPS
1. configure terminal
2. interface dot11radio {0| 1}
3. bridge-group group port-protected
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
payload-encapsulation
{snap | dot1h}
Sets the encapsulation transformation method to RFC 1042
(snap) or 802.1h (dot1h, the default setting).
Step 4
end Returns to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Saves your entries in the configuration file.

Cisco 2911 Specifications

General

Ethernet LAN	Yes
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
USB ports quantity	2
Ethernet LAN (RJ-45) ports	3
Firewall security	Cisco IOS
Input current	2.2 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	50 W
Product color	Black
Rack capacity	2U
Operating altitude	0 - 4000 m
Non-operating altitude	0 - 4570 m
Storage temperature (T-T)	-40 - 80 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	5 - 85 %
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	304.8 mm
Width	438.2 mm
Height	88.9 mm
Weight	8200 g