Does 881W need 3 Antennas to Function (WLAN)?

ciscoman2012

Hey guys I believe I have the right configs done on this router but the wireless isn't functioning at all. I don't see it broadcasting my SSID name.

I have zero physical antennas attached to it as it was given to me and they misplaced them. Do I absolutely need them for the router to perform wireless functions, or do they only extend the signal farther than a few feet? There are three spots for antennas on the rear of the router.

Here is the sh run of the 881W and the AP side:


W881#sh run
Building configuration...

Current configuration : 1699 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname W881
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
service-module wlan-ap 0 bootimage autonomous
!
!
ip source-route
!
!
ip dhcp excluded-address 192.168.1.1 192.168.1.99
ip dhcp excluded-address 192.168.1.201 192.168.1.254
!
ip dhcp pool myDHCPpool
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 209.18.47.61 209.18.47.62
lease 5
!
!
ip cef
no ipv6 cef
!
!
multilink bundle-name authenticated
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
ip address dhcp
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
interface wlan-ap0
description Service module interface to manage the embedded AP
ip address 192.168.5.1 255.255.255.0
arp timeout 0
!
interface Wlan-GigabitEthernet0
description Internal switch interface connecting to the embedded AP
!
interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 24.163.0.1
no ip http server
no ip http secure-server
!
!
ip nat inside source list 23 interface FastEthernet4 overload
!
access-list 23 permit 192.168.1.0 0.0.0.255
!
!
!
!
!
control-plane
!
!
line con 0
exec-timeout 0 0
logging synchronous
no modem enable
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
line vty 0 4
login
!
scheduler max-task-time 5000
end





ap#sh run
Building configuration...

Current configuration : 3074 bytes
!
! Last configuration change at 18:47:08 UTC Thu Apr 20 1905 by cisco
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname ap
!
enable secret 5 $1$WUGQ$aLsDzNn44VA6wLmxZQqNe.
!
no aaa new-model
!
!
!
dot11 ssid CISCO NERD
!
dot11 ssid CISCO NERD vlan 1
authentication open
authentication key-management wpa
guest-mode
wpa-psk ascii 0 givemewifi
!
dot11 network-map
!
!
username cisco privilege 15 secret 5 $1$cA.0$b5p9.yql5i9eyhNiWYmf6/
!
bridge irb
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption vlan 1 mode ciphers tkip
!
ssid CISCO NERD
!
station-role root
!
interface Dot11Radio0.1
encapsulation dot1Q 1 native
no ip route-cache
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface GigabitEthernet0
description the embedded AP GigabitEthernet 0 is an internal interface connecting AP with the host router
no ip address
no ip route-cache
!
interface GigabitEthernet0.1
encapsulation dot1Q 1 native
no ip route-cache
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
!
interface BVI1
ip address 192.168.1.2 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.1.1
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
bridge 1 route ip

ciscoman2012

Any takers?

ciscoman2012

Still having this problem....?

Gaultjerry36

hi all just new here in site.. this is Gaultjerry by the way..

hope you can entertain me..

thanks!!!

lantech

Don't know if you'll need three antennas but you'll probably need at least one to get a signal out.

This question is probably better suited to the wireless section of the forums.

ciscoman2012

lantech wrote: »

Don't know if you'll need three antennas but you'll probably need at least one to get a signal out.

This question is probably better suited to the wireless section of the forums.

Thanks I didn't realize we had a section here for just wireless.

I'll try and post it over there too. If any mods see this feel free to move this thread.

SteveO86

To be honest I am not familiar with the 881w but the wireless antennas are what will actually be directing the RF signal. Without the antennas I could only imagine you getting a signal directly behind the antenna connector, if any.

ciscoman2012

SteveO86 wrote: »

To be honest I am not familiar with the 881w but the wireless antennas are what will actually be directing the RF signal. Without the antennas I could only imagine you getting a signal directly behind the antenna connector, if any.

Does anyone know any good replacement antennas?

Bokeh

If there isn't anything unique to the antenna or connector, I've gotten replacement antennas on EBay pretty cheap.

ciscoman2012

I just ordered this for around $9. Hope it will at-least broadcast the SSID with one and then I'll buy two more.

Amazon.com: Cisco Aironet 2.2dBi 2.4GHz Dipole Antenna (Standard Rubber Duck) with RP-TNC Connector ( AIR-ANT4941 ) (Black): Electronics