Bridging problem with multiple vlans

Hello Everyone, I am using two 1310 bridges in a root / non-root setup. The switches on both sides of the wireless bridge were setup to trunk native vlan 253. Each wireless bridge also had vlan 253 setup as a Radio and Ethernet Interface. In this config, the wireless bridges could associate and ping each other, but the switches on each side could not ping each other?s management vlan interface (Vlan 25). The only way to get traffic to pass to the corresponding switches on each side of the wireless bridge was to use vlan 253 for everything. We also see this problem with some of our other 1310 bridge connections at other plants. Has anyone seen this problem or a similar problem before?

Hi Craig,
Er, dunno if you have any insight on my issue. I'm trying to get 2 AP1231s (12.3-8) in bridge mode (root/non-root, antennas transmit/receive right) that have 4 VLANs going across the airwaves. Now, the bridges are associated, they can see each other's IP address, but will they ping? Absolutely not! VLAN20 is the native assigned to bridge-group 1, I've tried IP addresses on the BVI1, dot11Radio 0.20 and fa0.20 interfaces with no luck. There's no other fancy configuration options applied, just 4 VLANs going across two associated bridges. Any ideas? Appreciate any assistance you can offer.
I'd already found the document that Rob recommended beforehand and that proved useful in getting the units to associate. Now I just need a ping! A PC connected to the non-root bridge's Ethernet port via a Xover cable is able to ping the non-root bridge but that's as far as it goes.
Root bridge config attached. No IP assigned on this copy but as advised, tried a few scenarios!
Thanks, Paul

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Onplus with multiple VLAN

Hi,
i am trying to set the network agent N100 on a trunk port on a switch (2960) without success regarding dhcp???
The problem is that the agent is not getting any ip address from a dhcp pool from a Cisco 1841 router acting as DHCP server. The topology is like this:
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Thanks

Delo,
Take a look at the document link below. Beginning on page 3 contains a sample configuration. I would recommend reading the entire document to get your arms around the VLAN discovery functionality. I can appreciate that when reading some of the documentation it can be confusing and lead you to believe that it can discover additional networks using Layer 3 routing. That said, the one thing to keep in consideration is that OnPlus/ON100, other than the Network Scanning functionality, will not traverse Layer 3 boundaries to do additional discovery/monitoring. You can manually add devices that are only accessible via Layer 3 and select to do some monitoring on those devices however they must be added manually and it will not attempt to access those devices via SSH/Telnet or SNMP. As such, it won't do functions like backing up configurations.
OnPlus autodiscovery will only use Layer 2 and that is why you would need the VLAN Trunking with DHCP in each VLAN or to SPAN a switch port. With VLAN trunking the ON100 will have an IP in the other VLAN and be able to discover devices on that now "local LAN". With port spanning, the ON100 would discover based on packets it receives. It can appear a little confusing but as long as you keep in mind that the ON100 won't discover over a Layer 3, that will help to clarify some of the confusion.
http://www.cisco.com/en/US/docs/net_mgmt/other_net_mgmt/onplus/application_notes/multivlan/onplus_on100_vlan_discovery_782079601.pdfhttp://www.cisco.com/en/US/docs/net_mgmt/other_net_mgmt/onplus/application_notes/multivlan/onplus_on100_vlan_discovery_782079601.pdf

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Configuring a VLAN
Configuring your bridge to support VLANs is a five-step process:
1. Create subinterfaces on the radio and Ethernet interfaces.
2. Enable 802.1q encapsulation on the subinterfaces and assign one subinterface as the native VLAN.
3. Assign a bridge group to each VLAN.
4. (Optional) Enable WEP on the native VLAN. <-- Use WPA-PSK
5. Assign the bridge's SSID to the native VLAN.
http://www.cisco.com/en/US/docs/wireless/bridge/1400/12.2_15_JA/configuration/guide/p15vlan.html
Here is an example of vlan 1 (native) will be your management and your wireless link. vlan 10 & 20 will pass through the link.
BR# configure terminal
BR(config)# interface dot11radio0.1
BR(config-subif)# encapsulation dot1q 1 native
BR(config-subif)# bridge group 1
BR(config-subif)# exit
BR(config)# interface fastEthernet0.1
BR(config-subif)# encapsulation dot1q 1 native
BR(config-subif)# bridge group 1
BR(config)# interface fastEthernet0.10
BR(config-subif)# encapsulation dot1q 10
BR(config-subif)# bridge group 10
BR(config)# interface fastEthernet0.20
BR(config-subif)# encapsulation dot1q 20
BR(config-subif)# bridge group 20
BR(config-subif)# exit
BR(config)# interface dot11radio0
BR(config-if)# ssid batman
BR(config-ssid)# vlan 1
BR(config-ssid)# infrastructure-ssid
BR(config-ssid)# end

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duplicate of {thread:id=2286814}

Multiple SSID With Multiple VLANs configuration on Cisco Aironet APs: Assotiated clients cannot obtain IP addresses

Hi Surendra,
I was just given this task to see how i can configure a second ssid for guest access in our environment.
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I will greatly appreciate your urgent response.
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Hi,
As far as i know we dont set the ip helper address on the radio interface. It should be on the L3 interface of corresposding VLANs i.e.
int vlan 20
ip helper-address 192.168.33.xxx
int vlan 60
ip helper-address 130.20.1.xxx
I'm assuming that your using SVI's (int Vlan 20 and int Vlan 60) rahter than physical interfaces. Also hope you have configured switch port as trunk where this AP is connected.
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interface Dot11Radio0.20
encapsulation dot1Q 20 native
interface FastEthernet0.20
encapsulation dot1Q 20 native
Ideally your AP fastethernet configuration should looks like below and not sure how you missed this as this comes by default when you have multiple vlans for multiple ssids.
interface FastEthernet0.20
encapsulation dot1Q 20 native
no ip route-cache
bridge-group 20
no bridge-group 20 source-learning
bridge-group 20 spanning-disabled
interface FastEthernet0.60
encapsulation dot1Q 60
no ip route-cache
bridge-group 60
no bridge-group 60 source-learning
bridge-group 60 spanning-disabled
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Regards
Najaf

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=====================================
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mattperrott wrote:
Each blog entry has a iweb photo gallery attached to it. I create these by duplicating a previous blog entry, and changing the details as well as the photos contained inside.
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becker800 wrote:
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Regards,
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Hi,
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