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- About Mohammad Ali
06-13-2019
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Member since
06-30-2010
1047
Posts
209
Helpful
45
Solutions
06-06-2019
06:31 AM
It does sound weird 4 Cores and 2 Distribution switches. It is possible that they have multiple buildings, so something like this: (Scroll down to multiple buildings) https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/campover.html#wp708831 But that scenario should require more than just 2 Distribution switches at least 4 2 for each location at minimum. Have you discussed this with the customer and gathered any information such as review their existing design and what they are trying to accomplish etc?
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06-06-2019
05:39 AM
Check out some of these links they have lots of information: https://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/Campus/CVD-Campus-LAN-WLAN-Design-Guide-2018JAN.pdf https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/HA_campus_DG/hacampusdg.html https://www.cisco.com/c/en/us/solutions/design-zone/networking-design-guides/campus-wired-wireless.html https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/campover.pdf Something like this will most likely require meetings with different departments and what their requirements are. What you are trying to achieve in the end. Hope this helps for starters.
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05-31-2019
07:33 AM
So I think separator between the two IP's would be a "," HEX = 2C 06 <length may be 0x20 for 32-bit IP><Your IP Address for 0x6> 2C 15 <length for 32-bit IP><Your IP Address for 0x15> Also not sure if the 00 is needed at the end either. wouldn't that be like just inserting a "0" in between two IP's and a "0" towards the end something like: 10.10.10.10020.20.20.200 It will totally change the IP address.
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05-30-2019
02:37 PM
Thanks so if you look at the screen shot I have already tried that. I noticed after the first IP you have "00" and then "15" instead of "2c which is a comma". Any specific reason you are adding a "0" in Hex in between two IP's?
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05-30-2019
08:24 AM
Thank you I tried that with the 2C = , but same results. Did that in Meraki as well as Cisco IOS with same results. When I look at the packet capture and expand DHCP Option 43 I do not see any sub option in there instead both IP's show up under 43 only.
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05-29-2019
11:21 AM
I have a Cisco ME switch and I am trying to figure out the Option 43 with Suboption 21 configuration. I need to point the AP to two different servers so first one requires sub option 06 (HEX) and second one requires sub option 15(HEX). I have done that but it isn't working. So far I have tried: 06....IP15...IP Is there any other format that is needed perhaps I am missing some thing here. Thank you.
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Labels:
Created by
Mohammad Ali
in Wireless and Mobility
in Wireless and Mobility
04-16-2019
05:51 AM
04-16-2019
05:51 AM
Hey Scott, I know this post is old but wanted to verify this SSID in called station ID did you face any issues with the newer versions? I'm wondering if 7.4 had an issue but got fixed perhaps? Looks like 8.x is fine. Thank you in advance for confirming.
... View more
Created by
Mohammad Ali
in Cisco Bug Discussions
in Cisco Bug Discussions
03-15-2019
06:16 AM
03-15-2019
06:16 AM
So looking at the debug below. Every time Radio 1 and 0 show, "send OFFCHAN req" they are going off channel per this bug?
Mar 15 12:59:58 kernel: [*03/15/2019 12:59:58.0914] DOT11_DRV[1]: Rad: 1 chan: 60 | nf: 97
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9078] DOT11_DRV[1]: send OFFCHAN req: inprog = 0, type = 5 channel 56 width 3
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9079] DOT11_DRV[1]: map_off_channel_type(3665): input: 4 return 4
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9079] DOT11_DRV[1]: wcp/RadDrv1 :: Dot11BaseDriver vendor_set_80211_param op:86 commit:0 radio_param:1 vap_id:0
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9143] DOT11_DRV[1]: Ignoring the channel change notification
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9770] DOT11_DRV[1]: process_off_channel_done(3819): chan: 56 nf: 89 status: NDP DFS Tx Cancelled
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9771] DOT11_DRV[1]: wcp/RadDrv1 :: Dot11BaseDriver off_chnl_complete: NDP DFS Tx Cancelled status 9 inprog = 0, type = 0 channel 56 req->id 104334777
Mar 15 13:03:25 kernel: [*03/15/2019 13:03:25.9771] DOT11_DRV[1]: Rad: 1 chan: 56 | nf: 89
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6032] DOT11_DRV[0]: send OFFCHAN req: inprog = 0, type = 4 channel 56 width 3
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6057] DOT11_DRV[0]: map_off_channel_type(3665): input: 3 return 0
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6057] DOT11_DRV[0]: wcp/RadDrv0 :: Dot11BaseDriver vendor_set_80211_param op:86 commit:0 radio_param:1 vap_id:0
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6122] DOT11_DRV[0]: Ignoring the channel change notification
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6764] DOT11_DRV[0]: process_off_channel_done(3819): chan: 56 nf: 86 status: Success
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6765] DOT11_DRV[0]: wcp/RadDrv0 :: Dot11BaseDriver off_chnl_complete: Success status 1 inprog = 0, type = 0 channel 56 req->id 33555898
Mar 15 13:03:31 kernel: [*03/15/2019 13:03:31.6765] DOT11_DRV[0]: Rad: 0 chan: 56 | nf: 86
Mar 15 13:03:33 kernel: [*03/15/2019 13:03:33.0580] DOT11_DRV[1]: send OFFCHAN req: inprog = 0, type = 5 channel 120 width 3
Mar 15 13:03:33 kernel: [*03/15/2019 13:03:33.0581] DOT11_DRV[1]: map_off_channel_type(3665): input: 4 return 4
Mar 15 13:03:33 kernel: [*03/15/2019 13:03:33.0581] DOT11_DRV[1]: wcp/RadDrv1 :: Dot11BaseDriver vendor_set_80211_param op:86 commit:0 radio_param:1 vap_id:0
Mar 15 13:03:33 kernel: [*03/15/2019 13:03:33.0645] DOT11_DRV[1]: Ignoring the channel change notification
Mar 15 13:03:33 kernel: [*03/15/2019 13:03:33.1272] DOT11_DRV[1]: process_off_channel_done(3819): chan: 120 nf: 89 status: NDP DFS Tx Cancelled
Mar 15 13:03:33 kernel: [*03/15/2019 13:03:33.1273] DOT11_DRV[1]: wcp/RadDrv1 :: Dot11BaseDriver off_chnl_complete: NDP DFS Tx Cancelled status 9 inprog = 0, type = 0 channel 120 req->id 108531132
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Labels:
Created by
Mohammad Ali
in Wireless and Mobility
in Wireless and Mobility
01-30-2019
10:10 AM
01-30-2019
10:10 AM
I'm pretty sure there is no RF Profile or any custom settings just a global setting and its 1, 6, 11. Country is US 802.11bg:-A 802.11a:-A
Now one thing I'm noticing that AP's with a part number -B in them does not have this error message.
I can understand that for 5 GHz but why for 2.4 GHz?
Update: Found other AP's with 802.11bg:-A 802.11a:-A and not throwing that message.
... View more
01-30-2019
08:29 AM
I'm trying to figure out what exactly is this telling me?
20028,AP: The assigned channel is not in the DCA list. AP slot: 802.11b
I checked the RF Profiles and all areas and for 2.4 GHz only channels 1, 6, 11 are checked. So why this message?
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Created by
Mohammad Ali
in Wireless and Mobility
in Wireless and Mobility
01-11-2019
05:44 PM
01-11-2019
05:44 PM
I understand the client limitations and using only channels that are supported by the clients. Already know that part and have verified all that using pcaps and vendor tech specs. Back to the main question. I still need to know why Cisco document says that WLC will not use those channels in US and Canada. Because that statement is not true.
1- Cisco 2602 is 802.11n and I was not able to assign 116 or 140 manually with 40MHz width. Makes sense on 140 as 40MHz because 144 was allowed when ac came out
2- Cisco 3800 which is ac wave 2, allows manual configuration of both 116/120 and 140/144 at 40MHz.
3- Cisco’s statement in that doc states that WLC will not use those channels however I have seen RRM utilize those channels especially on IW3700s so technically that statement is wrong and/or doesn’t make sense because those channels do get assigned.
So is it possible that the document needs updating ? Hope this makes more sense. It’s critical to verify this statement from Cisco due to multiple reasons hence I’m trying to find something solid on that.
Thank you.
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Created by
Mohammad Ali
in Wireless and Mobility
in Wireless and Mobility
01-11-2019
03:31 PM
01-11-2019
03:31 PM
Cisco doc says,
Note
Channels 116, 120, 124, and 128 are not available in the U.S. and Canada for 40-MHz channel bonding.
However I can assign them on a 3800 AP. NOTE: I can not on my "n" AP's so does this apply to "n" AP's only and document just needs an update?
Also RRM does choose 116/120 and 140/144 on 3700's so the statement in the document is confusing. Can anyone especially Cisco verify what does that statement mean?
https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/radio_resource_management.html
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Labels:
Created by
Mohammad Ali
in Wireless and Mobility
in Wireless and Mobility
01-11-2019
07:06 AM
01-11-2019
07:06 AM
Got it thank you for confirming. Hopefully with some heavy fine tuning RRM will make better decisions now. I don't know why Cisco won't add that feature.
... View more
Created by
Mohammad Ali
in Wireless and Mobility
in Wireless and Mobility
01-11-2019
05:48 AM
01-11-2019
05:48 AM
Thank you Leo, I should have explained better. I know how to do all that but what I am looking for a way so that I can prevent OBSS issue. I want to be able to specify to only bond up or down. So if one AP is 36,44 I don't want another to do 44,36.
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Created by
Mohammad Ali
in Routing
06-06-2019
06-06-2019
It does sound weird 4 Cores and 2 Distribution switches. It is possible
that they have multiple buil...
Created by
Mohammad Ali
in Routing
06-06-2019
06-06-2019
Check out some of these links they have lots of
information:https://www.cisco.com/c/dam/en/us/td/doc...
05-31-2019
So I think separator between the two IP's would be a "," HEX = 2C06
2C 15
Also not sure if the 00
i...
05-30-2019
Thanks so if you look at the screen shot I have already tried that. I
noticed after the first IP you...
05-30-2019
Thank you I tried that with the 2C = , but same results. Did that in
Meraki as well as Cisco IOS wit...
05-29-2019
I have a Cisco ME switch and I am trying to figure out the Option 43
with Suboption 21 configuration...
Created by
Mohammad Ali
in Wireless and Mobility
04-16-2019
04-16-2019
Hey Scott, I know this post is old but wanted to verify this SSID in
called station ID did you face ...
03-15-2019
So looking at the debug below. Every time Radio 1 and 0 show, "send
OFFCHAN req" they are going off ...
01-30-2019
I'm pretty sure there is no RF Profile or any custom settings just a
global setting and its 1, 6, 11...
01-30-2019
I'm trying to figure out what exactly is this telling me? 20028,AP: The
assigned channel is not in t...
01-11-2019
I understand the client limitations and using only channels that are
supported by the clients. Alrea...
01-11-2019
Cisco doc says, Note Channels 116, 120, 124, and 128 are not available
in the U.S. and Canada for 40...
01-11-2019
Got it thank you for confirming. Hopefully with some heavy fine tuning
RRM will make better decision...
Public Statistics
| Date Registered | 06-30-2010 08:52 AM |
| Date Last Visited | 06-13-2019 05:46 AM |
| Total Messages Posted | 1,047 |
| Total Helpful Votes Received | 209 |
Helpful Votes Given To
| User | Helpful Count |
|---|---|
| 20 | |
| 10 | |
| 5 | |
| 20 | |
| 10 |
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