[c-nsp] 802.11 on 871

Lawrence E. Bakst ml at iridescent.org
Thu Sep 7 23:07:37 EDT 2006


I don't know for sure, but I have a few guesses.

1. Are you sure the 871 is a layer 3 device with respect to wireless? The Cisco 1400 series bridges we purchased a few years ago were layer 2 only. The IOS they came on them (12.2) will accept config like it was layer 3 router, they just don't work. Really messed me up (and the TAC) until the TAC supervisor told me they were layer 2 only. If this is the problem you will need to "bridge irb" and add a BVI interface. Let me know if you need a config.

There was some talk that they might upgrade the IOS for these devices (1400's) to support layer 3. Anyone know if that happened in IOS 12.3 Wireless Lan feature set?

2. BTW, your NAT looks wrong. FastEthernet4 is "nat outside" but you are specifying FastEthernet0 in your ip nat inside source ... command and FastEthernet0 is not configured.

3. Under ssid you might try adding "infrastructure-ssid optional" but I don't think that's the problem.

4. I don't know if the 802.11 radio for the 871 allows you to adjust the power put you could try something like:

power local cck 100
power local ofdm 30

your numbers will be lower and the units may be different.

on the radio interface.

Best,

leb


At 9:43 PM -0400 9/7/06, Andriy A. Yerofyeyev wrote:
>Hi:
>
>    What can be wrong with 871 configuration for *basic* wireless ?
>(below) The same configuration on 1811W works pretty well. In case of
>871 we even cannot see AP wit wireless scanner...
>
>    Any help would be appreciated ....
>
>version 12.4
>no service pad
>service timestamps debug datetime msec
>service timestamps log datetime msec
>no service password-encryption
>!
>hostname Router
>!
>boot-start-marker
>boot-end-marker
>!
>!
>no aaa new-model
>!
>resource policy
>!
>ip subnet-zero
>ip cef
>no ip dhcp use vrf connected
>!
>ip dhcp pool vlan1
>   network 10.0.0.0 255.255.255.0
>   default-router 10.0.0.1
>!
>!
>!
>!
>!
>!
>!
>!
>!
>!
>interface FastEthernet0
>!
>interface FastEthernet1
>!
>interface FastEthernet2
>!
>interface FastEthernet3
>!
>interface FastEthernet4
> ip address dhcp
> ip nat outside
> ip virtual-reassembly
> duplex auto
> speed auto
>!
>interface Dot11Radio0
> no ip address
> !
> ssid csco
>    vlan 1
>    authentication open
>    guest-mode
> !
> speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0
>36.0 48.0 54.0
> station-role root
>!
>interface Dot11Radio0.1
> description Cisco Open
> encapsulation dot1Q 1 native
> ip address 10.0.0.1 255.255.255.0
> ip nat inside
> ip virtual-reassembly
> no snmp trap link-status
> no cdp enable
>!
>ip classless
>!
>no ip http server
>no ip http secure-server
>ip nat inside source list 10 interface FastEthernet0 overload
>!
>access-list 10 permit 10.0.0.0 0.0.0.255
>!
>control-plane
>!
>!
>line con 0
> no modem enable
>line aux 0
>line vty 0 4
>!
>scheduler max-task-time 5000
>end
>
>Cisco IOS Software, C870 Software (C870-ADVSECURITYK9-M), Version
>12.4(2)T1, RELEASE SOFTWARE (fc3)
>Technical Support: http://www.cisco.com/techsupport
>Copyright (c) 1986-2005 by Cisco Systems, Inc.
>Compiled Tue 16-Aug-05 21:13 by ssearch
>
>ROM: System Bootstrap, Version 12.3(8r)YI, RELEASE SOFTWARE
>
>Router uptime is 17 minutes
>System returned to ROM by reload
>System image file is "flash:c870-advsecurityk9-mz.124-2.T1.bin"
>
>        Interface Dot11Radio0 Statistics (Cumulative Total/
>          Last 5 Seconds):
>RECEIVER                               TRANSMITTER
>Host Rx Bytes:          64821 /   0    Host Tx Bytes:            506959
>/5341
>Unicasts Rx:                0 /   0    Unicasts Tx:                   0
>/   0
>Unicasts to host:           0 /   0    Unicasts by host:              0
>/   0
>Broadcasts Rx:           1576 /  12    Broadcasts Tx:              4651
>/  49
>Beacons Rx:               559 /   0    Beacons Tx:                 4651
>/  49
>Prob Req Rx:             1017 /  12    Prob Resp Tx:                  0
>/   0
>Broadcasts to host:       559 /   0    Broadcasts by host:         4651
>/  49
>Multicasts Rx:              0 /   0    Multicasts Tx:                 0
>/   0
>Multicasts to host:         0 /   0    Multicasts by host:            0
>/   0
>Mgmt Packets Rx:         1576 /  12    Mgmt Packets Tx:            4651
>/  49
>RTS received:               0 /   0    RTS transmitted:               0
>/   0
>Duplicate frames:           0 /   0    CTS not received:              0
>/   0
>CRC errors:                63 /   0    Unicast Fragments Tx:          0
>/   0
>WEP errors:                 0 /   0    Retries:                       0
>/   0
>Buffer full:                0 /   0    Packets one retry:             0
>/   0
>Host buffer full:           0 /   0    Packets > 1 retry:             0
>/   0
>Header CRC errors:          0 /   0    Protocol defers:               0
>/   0
>Invalid header:             0 /   0    Energy detect defers:          0
>/   0
>Length invalid:             0 /   0    Jammer detected:               0
>/   0
>Incomplete fragments:       0 /   0    Packets aged:                  0
>/   0
>Rx Concats:                 0 /   0    Tx Concats:                    0
>/   0
>
>
>PHY RX ERROR STATISTICS: total/last 5 sec (    8145/   0)
>Tx underrun:                 0 /   0    Error panic:                   
>0 /   0
>Radar detect:                0 /   0    Abort:                         
>0 /   0
>Tx override Rx:              0 /   0
>OFDM timing:              7763 /   0    OFDM illegal parity:           
>0 /   0
>OFDM illegal rate:           0 /   0    OFDM illegal length:           
>0 /   0
>OFDM power drop:             0 /   0    OFDM illegal service:          
>0 /   0
>OFDM restart:                0 /   0
>CCK timing:                379 /   0    CCK header CRC:                
>0 /   0
>CCK illegal rate:            0 /   0    CCK illegal service:           
>0 /   0
>CCK restart:                 3 /   0    Misc errors:                   
>0 /   0
>
>
>RATE 1.0 Mbps
>Rx Packets:               548 /   0    Tx Packets:                    0
>/   0
>Rx Bytes:               66199 /   0    Tx Bytes:                      0
>/   0
>RTS Retries:                0 /   0    Data Retries:                  0
>/   0
>
>RATE 2.0 Mbps
>Rx Packets:                11 /   0    Tx Packets:                    0
>/   0
>Rx Bytes:                 858 /   0    Tx Bytes:                      0
>/   0
>RTS Retries:                0 /   0    Data Retries:                  0
>/   0
>
>sh dot11 associations
>
>802.11 Client Stations on Dot11Radio0:
>
>SSID [csco] :
>
>
>Others:  (not related to any ssid)
>
>
>sh int dot11Radio 0
>Dot11Radio0 is up, line protocol is up
>  Hardware is 802.11G Radio, address is 0014.a417.d620 (bia 0014.a417.d620)
>  MTU 1500 bytes, BW 54000 Kbit, DLY 1000 usec,
>     reliability 255/255, txload 1/255, rxload 1/255
>  Encapsulation ARPA, loopback not set
>  ARP type: ARPA, ARP Timeout 04:00:00
>  Last input never, output never, output hang never
>  Last clearing of "show interface" counters never
>  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 3
>  Queueing strategy: fifo
>  Output queue: 0/30 (size/max)
>  5 minute input rate 0 bits/sec, 0 packets/sec
>  5 minute output rate 0 bits/sec, 0 packets/sec
>     0 packets input, 0 bytes, 0 no buffer
>     Received 1663 broadcasts, 0 runts, 0 giants, 0 throttles
>     8145 input errors, 65 CRC, 0 frame, 0 overrun, 0 ignored
>     0 input packets with dribble condition detected
>     0 packets output, 0 bytes, 0 underruns
>     0 output errors, 0 collisions, 2 interface resets
>     0 babbles, 0 late collision, 0 deferred
>     0 lost carrier, 0 no carrier
>     0 output buffer failures, 0 output buffers swapped out
>
> sh int dot11Radio 0.1
>Dot11Radio0.1 is up, line protocol is up
>  Hardware is 802.11G Radio, address is 0014.a417.d620 (bia 0014.a417.d620)
>  Description: Cisco Open
>  Internet address is 10.0.0.1/24
>  MTU 1500 bytes, BW 54000 Kbit, DLY 1000 usec,
>     reliability 255/255, txload 1/255, rxload 1/255
>  Encapsulation 802.1Q Virtual LAN, Vlan ID  1.
>  ARP type: ARPA, ARP Timeout 04:00:00
>  Last clearing of "show interface" counters never
>
>
>
>
>
>
>
>--
>
>Best regards,
>
>
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