Cisco Wireless :: Backup Port Of WLC 5508 MGMT Interface
Sep 8, 2012
Since WLC5508 MGMT interface is configured a AP-Mgr at the same time, can I set a Backup Port to WLC5508 MGMT interface? Refer to WLC configuration Guide:
In the Backup Port text box, enter the number of the backup port assigned to the management interface. If the primary port for the management interface fails, the interface automatically moves to the backup port.
Note Do not define a backup port for an AP-manager interface. Port redundancy is not supported for AP-manager interfaces. If the AP-manager interface fails, all of the access points connected to the controller through that interface are evenly distributed among the other configured AP-manager interfaces
if I need to configure the backup port for MGMT interface, i need to remove the AP-manager on MGMT interface and create a network dynamic interface for AP-Manager ?
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Apr 25, 2012
On a WLC 5508 it lists an option to specify a "Backup Port" under the physical information section on an interface. We have two central switched SSID's which are connected to an internal firewall. We are looking at installing a backup/standby firewall and running a virtual firewall between them. Each SSID would have an additional patch from the WLC to the standby firewall.
Does the backup interface port function on the WLC allow traffic to be failed over from a centrally switched SSID via backup interfaces to an alternative device? If this does work will only physical link failure to the primary firewall cause the backup port to be activated or is there configuration parameters which can be specified for load, packet loss or latency which can be used as criteria to cause the backup port to be utilized?
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May 6, 2013
I have 2 x 5508 Wireless Controllers, 1 mgmt port on each as standard. I noticied something different between these controllers running the same code.I can bound a physical port to the mgmt interface on one controller but not the other (both interfaces are untagged)see below, this config appears on one controller but not the other? Is this something to do with the initial setup? How can I add Phyiscal information to the other controller mgmt interface, I cannot delete the mgmt interface. Physical InformationPort Number Backup Port Active Port Enable Dynamic AP Management?
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Jan 20, 2013
Here's my problem. I'm going to be using Cisco 1941 routers at a bunch of remote sites. All of these sites have 2 comm paths out. Some of them have 2 IP/VHF radios and some have 1 IP/VHF radio and a copper link using Patton ethernet extenders. From the VHF radios the data hit our MPLS network back to our HQ and the sites with copper go directly back to our HQ. Everything ends up at a Cisco 4948 switch. The problem I'm having is that I want the routers at the remote site to use one ethernet port (G0/0) as the primary and the other (G0/1) as the backup interface. I've tried the backup interface command but the problem is that depending on where an outage occurs the ethernet link to either the radio or Patton stays up so it never switches over. We're using OSPF as our routing protocol and I'm sure there's something that can be done with it but I'm not sure what.
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Feb 5, 2013
how to backup a Cisco Wireless Access Point Controller 5508.
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Jun 12, 2012
My customer has a 4402-25-K9 and need a backup (failover) controller to avoid data transmision break when primary controller goes down.4402 are end of sale so I have a question can I use 5508 to get Controller Failover Protection with 4402 ?
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Jun 20, 2012
I have a facility, where all the access points almost 250 of them are connected to two WisM's (One in each core switch ) . They are running in 6.0.199 firmware . These two WisM's are managed by WCS , which is running 6.0.188.
As i need to add more access points and to make fully redundant , 5500 controller was ordered and it has with firmware 7.0 installed. Couple of queries related with it .
1. Can 5500 be added in the WLC group, so that existing Access Points can be configured to use primary controller as 5500 and secondary / tertiary controller as WISM ?
2. Will 5500 be able to be detected by WCS , as the version of 5500 is 7.0 and WCS version is 6.0.188 ?
3. As WCS was already deployed and live, is it possible to upgrade, if the client has support contract like SUSA ?
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Oct 23, 2012
I just turned on 2 Wirelless LAN Controllers 5508 and I am getting this message on both of them:
Loading primary image (Image not found)
** Unable to read "linux.pri.img" from ide 0:2 **
Loading backup image (Image not found)
** Unable to read "linux.bak.img" from ide 0:2 **
And it is taking me to the BootMenu. I selected option 4 to Clear Configuration and the controller seems to restart the system but I still get the same error. I checked the LEDs status and Sys is Amber and Alarm is OFF which according to the documentation is a System Crash.
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Dec 9, 2012
I have two 5508 WLC's setup to run about 200 AP's as the moment. This is a hospital with patient care now running over wireless. I am looking for the best scenario to minimize down time. Currently both controllers are in the same mobility group and I will be setting the primary / secondary controller in the High Availability tab for each AP. Most setting are all default still.
My question:
Would it better to setup the primary/secondary from the global configuration?
Can I leave them in the same mobility group if I use the global configuration?
My only problem so far is having AP's on different controllers caused some response delay as clients move from one controller to the other. I need to find the best possible response time with the lowest possible fail-over time. Any recommondeations or links to a good article on this subject?
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Jan 10, 2012
I recently tested the process for a customer of defaulting a Cisco WLC to factory configuration and then restoring the configuration from Cisco NCS. It was not seamless to say the least and I wonder if I have just gone about it the wrong way.
Have have set the NCS platform to configuration sync with the 5508 controllers at 04:00 every day and prior to the controller defaulting I ensured that NCS also reported that the config was in sync. I have also set NCS to complete a tftp backup of the controller every night 23:00 - interestingly though I have no idea where this is stored on the NCS platform ( a VM appliance ) or what it's file name is.
Anyway my experiences where as follows:-
1. defaulted WLC and via serial CLI ended up at the configuration wizard.
2. Set the correct LAG, management IP, host name that NCS knew this controller by.
3. To test things just created a dummy WLAN ( SSID ) as I assumed this would be overwritten ( big mistake ! ).
At this point I connected the controller to the network and tried to restore the configuration from the config sync version.
First problem - you have to remember to set up the SNMP community string you were using as it is needed by the configuration sync process. After adding this to the controller I could push the configuration to the controller.
Second problem - failed to add the first WLAN from the backup as I have added the temporary dummy W LAN via the wizard and NCS reported a conflict. So had to delete WLAN ID 1 from the WLC GUI directly and then the config push no longer reported this error.
Third problem - for some reason did not add the TACACS server details - reported the error that it could not added them. I manually added these via a template via NCS and all was well.
Fourth problem - all but the first WLAN was in the disabled state - had to re-enable all of the WLANs.
Fifth problem - any default items I had disabled or removed have not been saved - therefore I have removed the public and private SNMP communities - but these were still on the WLC after the restore. I have disabled unused ports not in the LAG as they show an error in NCS - these where not disabled after the restore.
So all in all not a very satisfactory restore process from NCS to an defaulted WLC ( meant to simulate to the customer what would be needed if they had to replace a controller due to hardware failure ).
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Dec 9, 2012
I have an ASA 5510 running 8.4 with dual ISPs setup on 2 different interfaces: outside(primary),backup(backup). I also have a site to site VPN to another ASA in another city. The VPN is now setup on the outside interface and works fine. What I wanted to do is to make the VPN run over the backup interface only.
So, I modified the the crypto map on the remote side to use the backup interface IP and created a tunnel-group for it. I then created a crypto map for the backup interface and enabled ikev1 on it. The default route is set to use the outside interface so I created a static route that routes traffic bound for the outside interface on the remote side to the backup interface default gateway. I can get the tunnels to establish but no traffic is passing through them. I though then that I need a NAT for the tunnel traffic to I created a NAT as well but still no traffic passed. I tried the packet-tracer and it said the traffic was allowed and from the show crypto ipsec sa command I can see the tunnel setup but no traffic will go across it.
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Jun 20, 2011
Does backup interface is supported on ASR?
interface GigabitEthernet0/2/1
description 3750_Stack_1
backup interface GigabitEthernet0/2/2
ip address 100.50.50.242 255.255.255.248
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Nov 21, 2011
I have setup ASA 5505 with 2 ISP, named outside (primary) and backup, the scenario is if outside down, then backup will take over, it works now. But it is not working when the primary connection cannot reach the gateway with the interface still up.
Is it possible when the primary connection cannot reach the gateway then backup automatically take over?
My configuration is:
ASA Version 8.2(1)
!
hostname cisco
[Code].....
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Mar 13, 2012
I am in the process of upgrading our wireless infrastructure from a series of APs centrally managing the infrastructure centrally with the WLC 5508 and new APs (1142). All seems to be going well, the APs see the controller and are downloading the latest information/changes and I can connect to a test network. The current issue I am having is that I cannot connect to the AP via the web interface.
The config for the management interface of the 5508 is:
interface GigabitEthernet4/0/20
description ** Connection to WLC-5508-01 **
[Code].....
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Nov 12, 2012
We have a 5510 and I have a second ISP setup for a backup link. We have 4 ports connected to 4 different internal subnets. I want to force one of the ports to use the backup ISP link at all times. I'm having a little problem with where I need to make the changes in my ASA.
Interface "outside" is my main ISP
Interface "building3" is my backup ISP.
I want to force the "Guest" network to use the "building3" link for all traffic. Here's a snippet of my config
global (outside) 10 interface
global (building3) 10 interface
nat (inside) 0 access-list nonat
nat (inside) 10 0.0.0.0 0.0.0.0
nat (Guest) 10 0.0.0.0 0.0.0.0
[URL]
Do I need to change the global pool or create a new one? I have a couple free public IP addresess on the building3 subnet I can use for a pool.
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Sep 2, 2010
I have a problem in configuring two pair of backup interface on my customer's router (3845). It's ok when I configure just one of them. If I configure both pairs of interfaces into backup interface, one of them will be in disabled mode, as shown below :
WANR01#sh ip int bri
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 172.16.199.106 YES NVRAM up up
GigabitEthernet0/1 172.16.3.5 YES NVRAM up up
Serial0/0/0 unassigned YES NVRAM administratively down down
Serial0/0/1 unassigned YES NVRAM administratively down down
FastEthernet0/1/0 125.213.133.186 YES NVRAM standby mode down
FastEthernet0/2/0 172.112.22.6 YES NVRAM standby mode/disabled down
FastEthernet0/2/1 123.231.177.238 YES NVRAM up up
Loopback0 172.16.199.12 YES NVRAM up up
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Aug 26, 2012
Is there any limitations of network size for an interface in a WLC 5508? Any recomendations of netmask size? Maximum /24, maximun /21?
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Aug 9, 2012
Yesterday I was in one of our client premises configuring a WLC 5508 with software 7.2, went through the initial configuration wizard with no problem whatsoever, my issue began when trying to configure a ap-manager interface.In many WLC configuration guides cisco states that for 5508 it is not required to configure an ap-manager interface because the management will suffice, but then they put a side note recommending it's configuration for best practices and better performance. OK so I saw that in an earlier version document and now they do not make the recommendation but the still use the word required and for me that's still is not a limitation. I can't create the ap manager interface because when I put the VLAN ID it says the it is being used by another interface.
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Aug 1, 2010
I'm setting up a new 5508. I've used the config from a 4402, have successfully connected to the Service port to manage the device, but for some reason cannot connect to the Management interface. In this case, port 1.
The service port is connected to a Catalyst switch and grabbed an ip address (10.2.x.x subnet) no problem. I can access the 5508 via https using the SP. However, port 1 is connected to the same Catalyst switch, but on a different vlan (subnet 10.20.x.x). Both ends show that the interfaces are up, I can ping the interface from any other host on the network, but when I try to manage the device via https I cannot connect. We are using WCS and I cannot add the device from the WCS. About all I can do is ping that interface.
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Aug 25, 2011
at the moment we are using as default the manager interface as ap-manager interface.
Now I have to change the IP. I would like to change that very smooth with all our locations. My question, is it possible to add a ap-manager interface with a new vlan and IP Range, so that I can move the AP's to the second interface as as soon as it is planed with the location. Sometimes in special cases we have hard coded the WLC IP oder we just need to change the DHCP option but this needs to be planed and I see problem to do that in a hard cut.
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Jan 16, 2013
After I've upgraded software to the v7.3 and applied AP-SSO it made imposible to access the controller's gui via Service-port. So we tried to access it by management-port, but there is some problem too. It is not working from another subnets. But default gateway on management vlan is set correctly and I even tried to turn of all acl's on switch. WLC is only accessible from the same network. But at the same time wlc is replying on ping fine.All other protocols cannot connect to the controller.
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Jan 18, 2011
I have two 3750 switch.switch A(main) and switch B is connected by OFC but i have another wireless link for backup.Now if OFC goes down then i manually connect wireless link with switch B for this reasons i am faceing a lot of problem. I want without any changing of cable if my primary link goes down then my backup link automaticaly goes up and vice versa .
Switch-A port gi1/0/9 and Switch-B port gi1/0/9 is connect by OFC Switch-A port gi1/0/8 and Switch-B port gi1/0/8 is connect by Wireless link (backup) i attach my network diagram kindly find the attachment file.
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May 31, 2013
I am wondering if anyone has seen this before. We have about 50 AIR-LAP1242AG-E-K9 access points connected to a WLC5508 running 7.4.100.0. These were all being used as autonomous APs previously and were converted when the controller was installed. About 12 of these have a lovely feature where their radio interface goes down at random. The radio is still in enable mode but the opertational status is DOWN. It seems to happen particularly when there has been a power outage and the AP rejoins the controller. All of the other 1242s are fine and never sees this problem. The APs are all on power injectors.
Once the radio is down, the only way I can get the to come back online is by doing the following:
1. Set the radio admin status to "disable" and apply
2. Turn off CDP
3. Reboot the AP Wait until the AP is back online and registered on the controller
4. Enable the radio admin status and CDP.
If I do not remove the CDP setting I cannot bring the radio back to "UP". I know we had previous issues with autonomous 1242 APs that did not like CDP being enabled. Have I perhaps got a bunch that are like that? Despite these having operated as autonomous APs they are AIR-LAP1242 from the factory.
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Aug 12, 2012
I have got a wireless project with WLC main office and have 10 sites where ap's are there and ap's getting registerd .we need 4 ssid in all branches same .
ssid guest
ssid scanner
ssid user
vlan 600 main office for scanner 192.168.1.0
in branch
vlan 600 for scanner but ip is 172.16.1.0
and bgp is running . And customer is asking me not to edit the ip range or vlan or create new vlan . but in wlc am not able to create branch network 172.16.1.0 range interface and vlan 600 as vlan 600 i already created for scanner main office 192.168.1.0 So is there a way to do that .
Temprarly one site i did like created vlan 610 in branch no ip . And in main office interface vlan 610 given another ip range . and i created interface in wlc . from branch i can connect the ssid and getting ip . But they dont want to create any aditional vlan or another network . Customer dont have a smartnet contract . They recently baught 2 wlc 5508 and 40 ap 1142.
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Apr 27, 2011
i will going to buy a router 2911 but i want know if support a interface ADSL modulo like backup in case that my primary link WAN Ethernet down and up the adsl link with a module HWIC ADSL pots.
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Apr 5, 2013
So I've got an odd issue here, have an older 4948 that I'm trying to setup on our management vlan so i can manage it from another host connect to the switch. I can't figure out why its not working. Below is the config
vlan is 64 and all the trunk and access ports that are on vlan 64 are working just fine. Just can't hit the switch from a machine on the 64 vlan.
!
interface Vlan1
no ip address
[Code].....
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Oct 16, 2011
I have a asa 5520 with an outside and backup interface. I am trying to configure two static nat statements from the inside to the outside and backup interface. Here is what I have configured so far.
object network obj-10.1.1.254
host 10.1.1.254
object network obj-10.1.1.254
nat (inside,outside) static 172.25.10.3
I want to also use nat (inside,backup) static 172.25.10.3
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Jan 13, 2013
Im receving this error on my syslog server: capwap_ac_sm.c:1443 Ignoring Primary discovery request received on non-management interface (2) from APalready checked the configuration and everything seems ok. They are registered and with clients associated.What could be the cause?
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Oct 9, 2012
I have an ASA 5520 new. I am trying to migrate from a PIX 515E. I can connect via the CLI and ASDM on the management port (IP 192.168.1.1 the default) What I am having an issue with though is when I change the management port to 10.0.1.1 via the CLI or ASDM I can no longer use ASDM. I issue the show IP command in the CLI and I see that the IP has indeed changed but I still can not get into it. I must be missing something really simple, but this is driving me insane. I want to change the IP because I need the a different interface to be 192.168.1.1.
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Jun 19, 2012
I have ASA-SM failover pair in two Catalyst 6500 switches. I send from switch to ASA-SM management VLAN 1234 to admin context for management purposes. I have another 3 contexts on ASA-SM. Can I have same managemenet VLAN1234 on each ASA-SM context? Can it work?
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Mar 14, 2012
My company uses Cisco 891's in replacement of the 1811 where we would have DBU used via an external modem and a triggered time of 3 minutes after a primary connection failure was identified. In testing the 891 in a Layer 2 failure environment, it is within milliseconds that the v.92 port is engaging after the layer 2 failure. Has anyone been able to get it to attempt at a more than millisecond rate?
Redacted config from router:
ip sla 1
icmp-echo <%= probeIP1 %> source-interface GigabitEthernet0
[Code].....
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Apr 24, 2012
I have a question about 2504 deployment.Two WLC's , one will be acting as primary controller, second as secondary controller.
There will be two firewalls with High Availability between them. Ok, if primary controller will go down, we would need to wait about 2minutes, and AP's would join secondary controller.
But if there is a problem with firewall? Etc. FW 1 goes down. Is it possible with WLC 2504 to use it's second port as backup port ? And use the same IP address between them?
Because if we configure the second port with different IP address, we would need to wait about 2minutes, because AP's is in "rejoining" mode )(To use second port as backup, but have the same IP address on it ( like put these two interfaces into the same "vlan") , because this would be really great, if one Firewall goes down, we would still will be using the same wireless controller.)
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Jul 5, 2012
We are getting the HIGH CPU process due to Cat4k Mgmt Lopri with both core Switches installed at the Customer site. [code]
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