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7
Replies

No DHCP Address on 5Ghz Radio

woodjl16501
Level 1
Level 1

I just setup a Cisco Air 1142 in autonomous mode.  Seems to be working just fine, but if I try to join the 5Ghz WiFi is does not give out an IP address. 2.4Ghz is working as it should. Below is the current config, any advise would be greatly appreciated.

Office_WiFi#show run

Building configuration...

Current configuration : 2577 bytes

!

! Last configuration change at 01:11:21 UTC Fri Mar 1 2002 by Cisco

version 15.3

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname Office_WiFi

!

!

logging rate-limit console 9

enable secret 5 $1$hdg4$vkcOcC/EPbRj2ClnIevpe1

!

no aaa new-model

no ip source-route

no ip cef

ip domain name woodchipstudios.com

!

!

!

!         

dot11 syslog

!

dot11 ssid It Burns When IP

   authentication open 

   authentication key-management wpa version 2

   guest-mode

   wpa-psk ascii 7 122D121E1C00050109242B233A30754257

!

dot11 ssid It Really Burns When IP

   vlan 30

   authentication open 

   authentication key-management wpa version 2

   guest-mode

   wpa-psk ascii 7 08155B4707120C123104030F232E737963

!

!

!

no ipv6 cef

!

!

username Cisco password 7 05280F1C2243

!

!         

bridge irb

!

!

!

interface Dot11Radio0

 no ip address

 !

 encryption mode ciphers aes-ccm 

 !

 ssid It Burns When IP

 !

 antenna gain 0

 station-role root

 bridge-group 1

 bridge-group 1 subscriber-loop-control

 bridge-group 1 spanning-disabled

 bridge-group 1 block-unknown-source

 no bridge-group 1 source-learning

 no bridge-group 1 unicast-flooding

!

interface Dot11Radio1

 no ip address

 !        

 encryption mode ciphers aes-ccm 

 !

 encryption vlan 30 mode ciphers aes-ccm 

 !

 ssid It Really Burns When IP

 !

 antenna gain 0

 peakdetect

 dfs band 3 block

 channel dfs

 station-role root

 bridge-group 1

 bridge-group 1 subscriber-loop-control

 bridge-group 1 spanning-disabled

 bridge-group 1 block-unknown-source

 no bridge-group 1 source-learning

 no bridge-group 1 unicast-flooding

!

interface Dot11Radio1.30

 encapsulation dot1Q 30

 bridge-group 30

 bridge-group 30 subscriber-loop-control

 bridge-group 30 spanning-disabled

 bridge-group 30 block-unknown-source

 no bridge-group 30 source-learning

 no bridge-group 30 unicast-flooding

!

interface GigabitEthernet0

 ip address 192.168.1.28 255.255.255.0

 duplex auto

 speed auto

 bridge-group 1

 bridge-group 1 spanning-disabled

 no bridge-group 1 source-learning

!

interface GigabitEthernet0.30

 encapsulation dot1Q 30

 bridge-group 30

 bridge-group 30 spanning-disabled

 no bridge-group 30 source-learning

!

interface BVI1

 mac-address 0022.bd18.3f23

 ip address 192.168.1.27 255.255.255.0

!

ip default-gateway 192.168.1.1

ip forward-protocol nd

ip http server

no ip http secure-server

ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag

!

!

snmp-server community WiFi RW

bridge 1 route ip

!

!

!

line con 0

line vty 0 4

 login local

 transport input all

!

end

7 Replies 7

Richard Burts
Hall of Fame
Hall of Fame

You are associating 5Ghz with vlan 30 and bridge group 30. But I do not see anything that associates any IP with them. I would have thought that there would be something like BVI30 to do this.

HTH

Rick

HTH

Rick

So would this work:

no BVI1

BVI30

ip address 192.168.1.27 255.255.255.0

 no bridge-group 1

 no bridge-group 1 subscriber-loop-control

 no bridge-group 1 spanning-disabled

 no bridge-group 1 block-unknown-source

Sorry a little new to Access points.

Access points are not a particular area of strength for me either. But it seems to me that if you remove BVI1 and replace it with BVI30 that you will impact the 2.4Ghz. Perhaps we should start by clarifying what you are trying to achieve. Do you want the 2.4 and the 5 Ghz to use different IP subnets? Or do you want them both in the same subnet? If you want two subnets then I believe that you will need two bridge groups and two BVIs. If you want them in the same subnet then there would be one bridge group used on both and one BVI.

HTH

Rick

HTH

Rick

Ok, so I have this now (after some Googling), but when I join the 5Ghz it doesn't give me an IP.  Am I missing something here?

Office_WiFi#show run

Building configuration...

Current configuration : 3268 bytes

!

! Last configuration change at 04:43:46 UTC Fri Mar 1 2002 by Cisco

version 15.3

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname Office_WiFi

!

!

logging rate-limit console 9

enable secret 5 $1$hdg4$vkcOcC/EPbRj2ClnIevpe1

!

no aaa new-model

no ip source-route

no ip cef

ip domain name woodchipstudios.com

!

!

!

!

dot11 syslog

dot11 vlan-name 2.5Ghz vlan 1

dot11 vlan-name 5Ghz vlan 10

!

dot11 ssid It Burns When IP

   vlan 1

   authentication open 

   authentication key-management wpa version 2

   mbssid guest-mode

   wpa-psk ascii 7 0030040F0A5002032C2E4345001C524642

!

dot11 ssid It Really Burns When IP

   vlan 10

   authentication open 

   authentication key-management wpa version 2

   mbssid guest-mode

   wpa-psk ascii 7 02321352050D06246F4106120C12455A5C

!

!

!

no ipv6 cef

!

!

username Cisco password 7 05280F1C2243

!

!

bridge irb

!

!

!

interface Dot11Radio0

 no ip address

 !

 encryption mode ciphers aes-ccm 

 !

 encryption vlan 1 mode ciphers aes-ccm 

 !

 encryption vlan 10 mode ciphers aes-ccm 

 !

 ssid It Burns When IP

 !

 antenna gain 0

 beamform ofdm

 mbssid

 station-role root

!

interface Dot11Radio0.1

 encapsulation dot1Q 1 native

 bridge-group 1

 bridge-group 1 subscriber-loop-control

 bridge-group 1 spanning-disabled

 bridge-group 1 block-unknown-source

 no bridge-group 1 source-learning

 no bridge-group 1 unicast-flooding

!

interface Dot11Radio0.10

 encapsulation dot1Q 10

 bridge-group 10

 bridge-group 10 subscriber-loop-control

 bridge-group 10 spanning-disabled

 bridge-group 10 block-unknown-source

 no bridge-group 10 source-learning

 no bridge-group 10 unicast-flooding

!

interface Dot11Radio1

 no ip address

 !

 encryption mode ciphers aes-ccm 

 !

 encryption vlan 1 mode ciphers aes-ccm 

 !

 encryption vlan 10 mode ciphers aes-ccm 

 !

 ssid It Really Burns When IP

 !

 antenna gain 0

 peakdetect

 no dfs band block

 beamform ofdm

 mbssid

 channel dfs

 station-role root

!

interface Dot11Radio1.1

 encapsulation dot1Q 1 native

 bridge-group 1

 bridge-group 1 subscriber-loop-control

 bridge-group 1 spanning-disabled

 bridge-group 1 block-unknown-source

 no bridge-group 1 source-learning

 no bridge-group 1 unicast-flooding

!

interface Dot11Radio1.10

 encapsulation dot1Q 10

 bridge-group 10

 bridge-group 10 subscriber-loop-control

 bridge-group 10 spanning-disabled

 bridge-group 10 block-unknown-source

 no bridge-group 10 source-learning

 no bridge-group 10 unicast-flooding

!

interface GigabitEthernet0

 ip address 192.168.1.28 255.255.255.0

 duplex auto

 speed auto

!

interface GigabitEthernet0.1

 encapsulation dot1Q 1 native

 bridge-group 1

 bridge-group 1 spanning-disabled

 no bridge-group 1 source-learning

!

interface GigabitEthernet0.10

 encapsulation dot1Q 10

 bridge-group 10

 bridge-group 10 spanning-disabled

 no bridge-group 10 source-learning

!

interface BVI1

 mac-address 0022.bd18.3f23

 ip address 192.168.1.27 255.255.255.0

!

ip default-gateway 192.168.1.1

ip forward-protocol nd

ip http server

no ip http secure-server

ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag

!

!         

snmp-server community WiFi RW

bridge 1 route ip

!

!

!

line con 0

line vty 0 4

 login local

 transport input all

!

end

 

When you have configured bridge irb and have bridge group 1 then it expects to communicate using BVI 1. And when you have bridge group 10 then it expects to communicate using BVI 10. So let me repeat my question from an earlier response: "Perhaps we should start by clarifying what you are trying to achieve. Do you want the 2.4 and the 5 Ghz to use different IP subnets? Or do you want them both in the same subnet?" The answer to that question should indicate whether you want one bridge group or two bridge groups. Until that is clarified we will not be able to determine which is the correct configuration.

HTH

Rick

HTH

Rick

Sorry my bad for not answering that.  Same subnet, just different freq for the same network.

Thank you for the clarification. In this case you need only a single bridge group and a single BVI. Both radios use the same bridge group and the same BVI.

HTH

Rick

HTH

Rick