Cisco Wireless :: Catalyst 3850 - CAPWAP Transit In MA / MC Mode?
Mar 10, 2013
I understand that Cisco *wants* the APs to be directly connected to the new 3850.I have a few questions. Unfortunately, I think I know the answers. I just want to confirm.
a. When MA/MC is enabled on the 3850, does the 3850 start intercepting *all* CAPWAP packets it sees (much like CDP)? Even non-Cisco CAPWAP packets?
b. If I have a WLC 5500 upstream from the 3850, would APs hanging off a downstream 2960 be able to register to the 5500 through the 3850 when the 3850 is NOT in MA/MC mode?
c. If I have a WLC 5500 upstream from the 3850, would APs hanging off a downstream 2960 be able to register to the 5500 through the 3850 when the 3850 IS in MA/MC mode?
What I'm afraid of is:
a. yes, yes
b. yes
c. no
From the Q&A page:Q. Does the Cisco Catalyst 3850 support indirectly connected access points?A. No. The Cisco Catalyst 3850 switch will always terminate the CAPWAP tunnel locally. Pass-through mode or indirectly connected access point is not supported at this time.
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May 23, 2013
I'm trying to do password recovery on a Catalyst 3850 switch..I've read the section in this: url...where it says that I need to have physical access to the switch (I do), and that I reset the password if I issue a break command and interrupt the boot procedure. I've tried to do that... it gives me the "switch:" prompt, so I think I've interrupted the boot procedure successfully, but, what do I do next?I've successfully done recoveries on Catalyst 2950s, 3550s & 3560s, but the procedure for this one, if I'm reading the link above right, sounds like it's completely different.
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Apr 18, 2013
We have a new stack of two Catalyst 3850-48T's running IOS XE 3.02.00 (we are upgrading to 3.02.01 this weekend.)We noticed the CPU usage is around 30% even when there is almost no traffic going through the switch. We haven't seen any indication that it is causing a problem, but is this considered a normal baseline?I attached my config (with passwords sanitized,) show ver, show controllers utilization, and show process cpu history.
I noticed this behavior is normal on 2900XL/3500XL switches, but I didn't find anything relating it to 3850 switches. Does the same thing apply to the 3850 switches? [code] url...
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Feb 10, 2013
Based on what i am reading on the Catalyst 3850 datasheet, the controller functionality comes by default if i have a IP Base of IP Services license on the switch. Is this correct or do i need additional license to enable the controller functionality?What capabilities does below license provide ?
LIC-CT3850-UPG (Primary upgrade license SKU for Cisco 3850 wireless controller)
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Mar 7, 2012
I have been having some issues trying to stand up an older WiSM that has been incorrectly configured by my predecesssor and has a bad Mgt IP so I am unable to telnet or SSH into it, nor can I console or session into it.
What I would like to do is to change the Mgt address for the WiSM controllers (1 and 2) by way of the Sup (not sure that is possible) because as it stands they are set to 169.254.1.1 and are unreachable even when directly consoled into them.
Core-A#sh wism status
Service Vlan : 52, Service IP Subnet : 10.104.52.2/255.255.255.0
WLAN
Slot Controller Service IP Management IP SW Version Status
-------------------------------------------------------------------------------------------------------
3 1 10.104.52.3 169.254.1.1 4.0.217.0 Oper-Up
3 2 10.104.52.4 169.254.1.1 4.0.217.0 Oper-Up
Core-B#sh wism status
Service Vlan : 52, Service IP Subnet : 10.104.52.1/255.255.255.0
WLAN
Slot Controller Service IP Management IP SW Version Status
-------------------------------------------------------------------------------------------------------
3 1 10.104.52.50 10.104.30.254 7.0.116.0 Oper-Up
3 2 10.104.52.51 10.104.30.250 7.0.116.0 Oper-Up
I hope to get this WiSM setup on Core A and get it configured like I have my Core B and then run them in a dual failover design with load balancing between the two.
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Feb 26, 2013
How to trust the transit CoS value on ASR1013?
Tried so:
Router# configure terminal
Router(config)# interface gigabitethernet 0/0/0.1
Router(config-subif)# encapsulation dot1Q 1 native
Router(config-subif)# plim qos input map cos enable
But not worked.
Traffic path without ASR:
Server --> DLink 3526_1 --> Cisco 3750 --> Cisco 7606 vrf VoIP --> DLnk 3526_2 --> Client
DLink 3526_1 sets the CoS = 5
Client receives CoS = 5
If we add ASR1013:
Server --> DLink 3526_1 --> Cisco 3750 --> Cisco 7606 vrf VoIP --> Cisco ASR1013 --> Cisco 7600 global --> DLink 3526_2 - Client
DLink 3526_1 sets the CoS = 5
Client receives CoS = 0
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May 29, 2013
We are small transit ISP for other downlinks. And currently have such setup 7201 and 7206NPE-G1, as core and edge routers also we have connected to IXP. Downlinks usually BGP connected to one of border router which is terminated via VLAN, thus sub interface. IXP are also connected via VLAN on router.
What I don't like about this is when one borderd goes down downlink will lose connectivty, also recently we start growing and getting more downlinks, so balancing between borders become problem. So my question is, how to make setup less fragile and more redudant.
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Mar 3, 2013
We setup some new CAPWAP AP 3602E in the network and configure the DHCP server option 43 , but the WLCs still cannot detect the APs , Do you know if there any new way to troubleshooting?
WLC: 5508 version: 7.2.103.0
SW:3750E
AP: AIR-CAP3602E-C-K9
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Feb 1, 2011
I´m looking to a project where we want to start using Autonomous AP with possibility to change to controller based on near future.
Will Cisco Aironet 1040 Series Access Points allow us to change from IOS to CAPWAP when needed? I read some posts about the oposite process (CAPWAP to IOS) so I think it´s possible on both way. Can some one confirm this to me?
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Feb 9, 2012
We have had several APs disassociating from our controllers. The alerts say, Message: Access Point 'AP-xxxxx' associated to controller '10.x.x.x' on port number '0'. Reason for association 'Dot11g Mode Change. I have read several posts that point out that you should have QoS implemented to prioritize the CAPWAP traffic. I'd like to know if someone has implemented QoS and whether it has been successful in stopping the APs from disassociating. And if it has been successful do you have any configuration examples for the ports attached to the AP and controller as well as the QoS configuration?
We have several sites with AP1142's and 3500's. We have 2 5508 controllers. We are broadcasting 2 SSIDs of which one is in HREAP mode and the other is in local mode. Each of our sites have MPLS circuits.
Here is an example I found on Cisco which I believe can be used for CAPWAP as long as you change the ports to 5246 & 5247 instead of 12222 & 12223.
Example Router Configurations #
This section contains router configuration examples to be used as guides when addressing CS6 remarking or LWAPP control traffic load.
#
This example uses LWAPP APs on the 192.168.101.0/24 subnet, and two WLCs with ap-managers at 192.168.60.11, and 192.168.62.11. (code)
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Jun 8, 2010
I am looking to uplink an HP Blade Chassis to a Cisco 3750-X with SFP+ for 10Gig on each end.I would like to use Direct Attached SFP+ cables if possible.I already know that the HP Virtual Connect module will not accept a Cisco Direct Attached cable at the current firmware.Cisco Nexus 5000 has a feature allowing connectivity with the HP Direct Attached cable using "unsupported" mode.
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Aug 16, 2012
In case customers buy IP transit(there is a BGP session between ISP and customer), they often ask for default route and for example prefixes from local internet-exchanges. What is the advantage to have default route + certain smaller(for example /17, /18 and /24) prefixes?
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Jul 11, 2012
We have two 7609 routers at different city . Our both 7609 routers make MTU 1800 bytes and when I ping the other router with packet (1500 bytes) ,it can get thought .But when I ping with 15000 even 1506 bytes ,it didn.t work .As I didn't disable the DF field .
Internet address is 202.112.38.54/30
MTU 1800 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 96/255, rxload 81/255
[Code].....
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Feb 13, 2013
APs must be directly connected to the 3850 for it to work in MA or MC mode. But if we add some switches and configure it to work transparently (without CDP/ VLAN tagging /LDP ) ? Do you think this is really not possible to make it? What impact CAPWAP tunnel gets from this transparent switch ?
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May 2, 2013
I am read this cisco document Cisco Catalyst 3850 Switch Services Guide
[URL]...
which describe that
L2 roam occurs when the user roams from an access point connected to its controller to a different access point connected to another controller, where the two controllers are L2 adjacent to each other.
L3 roam occurs when the user roams from an access point connected to its controller to a different access point connected to another controller, where the two controllers are L3 adjacent to each other.
so what exactly this mean the two controllers are L2/L3 adjacent to each other , what is the different between them.
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Mar 28, 2012
I have an 1142 running capwap c1140-k9w8-tar.124-23c.JA4 that I am wanting to convert to an Autonomous AP.However, the AP does not seem to have an archive exec command to tftp downoad an new IOS.Is there another procedure that should be used ?
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Dec 15, 2012
I'm looking at the spec sheet comparing Cisco WLCs and I see that the 2504 has a bandwidth max of 500mbps. Just to be clear, not all of the traffic from the APs goes through the WLC does it? In this setup, the APs would be plugged into a PoE switch as well as the WLC. The only traffic to WLC would be the CAPWAP tunnel, CleanAir info, etc right? All other traffic should just be handeld at the switch right?Also, does the 2504 licencing include CleanAir in the price?
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Nov 12, 2012
I have to prepare an 3600 Capwap AP for autonomous functionality!
The following image was downloaded: ap3g2-k9w7-tar.152-2.JA
The release notes say: Site-Survey Only Mode for 3600, 3500, and 1550 Access Points You can install Cisco IOS Release 15.2(2)JA on Cisco Aironet 3600 and 3500 Series access points and on 1550 series outdoor access points to perform site surveys. This release runs on these access points with limited functionality. You can manually adjust these settings on the site-survey access points:
• Channel on each radio
• Transmit power on each radio
• Enable and disable the radios
• Manually set basic and supported transmit rates
• Enable advertised cell power in beacons to client to enable DTPC for doing active surveys
• Enable and disable SSID broadcast in beacons
• Enable open authentication
My Question is: Where can i find a instruction for downgrading an AIR-CAP3602i to Autonomous 3600 AP? Is it complicate to get the AP running, or what do i need for "downgrading"?
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May 9, 2012
I am trying to configure two AP-management interfaces to accept CAPWAP on different ports using the option "Enable Dynamic AP Management". One of them uses public ip address. However, I getting the message "Ignoring discovery request received on non-management interface ..." on this.
The controller is 5508.
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Apr 10, 2013
I have a wireless network running with Controller WISM2 and I also have a NCS.I want to know if there is any way to look of individual log of CAPWAP and LAPWAP Access Points. It is better if I can see it through NCS.
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Jul 10, 2011
I am facing this particular issue while providing Cisco unified Wireless solution to the customer. We are having CAPWAP 1252 APs controlled by WLC.
Scenario: 50 persons sitting in a hall with closely packed chairs using wireless simultaneously. Wireless access provided by patch antenna at a height of 11m from the user. As one AP can server 25 users, 2 APs are placed with antenna directions facing the compact users. Each users gets very good signal from these two APs.
Whether there will be serious interference and client association issues in this scenario? once one AP associates 25 clients, whether other 25 clients associate completely to other AP?
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Jan 6, 2011
I would like to confirm if it is possible to downgrade AP 1042 from CAPWAP to autonomous? I want to buy the AP model AIR-LAP1042N-A-K9. But i don't sure if in the future it could support this feature.
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Jul 10, 2012
Clarify some points with capwap implementation, does all data and control traffic tunneled back to the controller and switching packets to the specific vlan will be done by the controller? so if i have 5508 controller, its maximum throughput will be 8 gbps (local mode AP), provided i have done LAG on all its ports to the LAN switch?
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Apr 21, 2008
Is there a way to prevent resetting catalyst config by pressing and holding in the MODE button after powerup? I had entered in a basic config into my switch including passwords, etc. and was checking out different uses of the MODE button including setting the switch into express mode and I somehow managed to wipe the config and send the switch back into a default state by holding the mode button in for too long.
I want to prevent this from happening once the switch it is in production.
Not sure if it matters, but this is the 24 S model using the LAN lite image..
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Nov 8, 2011
The following messages are filling up my syslog.
*spamApTask0: Nov 09 15:59:29.071: %LOG-3-Q_IND: capwap_ac_reassembly.c:652 Unable to store capwap fragment from 88:f0:77:b6:fd:00.
*spamApTask3: Nov 09 15:59:27.616: %CAPWAP-3-REASSEM_SPACE: capwap_ac_reassembly.c:652 Unable to store capwap fragment from 88:f0:77:b6:fd:00.
What could be causing it? I am using 1524 APs in a Mesh environment with a WLC 5508 (7.0.116.0) which is connected to a H3C switched network.
The MAC addresses above are from my MAPs and I don't think I am getting it from the RAPs.
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Aug 30, 2011
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Dec 12, 2012
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Jun 4, 2013
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May 6, 2010
I am experiencing a problem on a Catalyst 4510 (cat4500-ipbasek9-mz.122-53.SG.bin) with 802.1x configured. Client PCs are connected via a mini desktop switch to a Cat 4510 switched port in multi-auth mode. The configuration of the port follows:
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Sep 3, 2012
I want to know the CAPWAP protocol.
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