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Mobility Express - Enable P2P comms across bands

InteraX2
Community Member

Hi all,

I have a 2800 AP running Mobility Express with 3 x 2700 APs.

I have a device connected to my single WLAN using 2.4Ghz and I need to access it from devices connected to the WLAN using 5Ghz.

In the WLAN settings, the 'Peer to Peer Block' option is disabled.

How can I enable this access/comms?

Thanks.

2 Accepted Solutions

Accepted Solutions

Rich R
VIP
VIP

As @Mark Elsen says this should just work because they're all in the same broadcast domain, but there might be more to the setup that you have not disclosed which could be relevant.

For example are you using static IPs which might require the passive client feature (often needed for things like printers), or are you relying on multicast (bonjour/mDNS) which might require some tweaks on your wireless or switches?

What version of software are you using?  Make sure it's up to date as per the TAC recommended link below.  AireOS is end of life now so final release 8.10.196.0 should be used.

------------------------------
Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390

View solution in original post

InteraX2
Community Member

Hi both,

As mentioned, this is a single WLAN/SSID/VLAN, so my understanding was that it should just work. I am running version 8.10.196.0.

@Rich R You are correct in that this is a device behind a WiFi to Ethernet adapter with a static IP address. I didn't think this would be relevant, but obviously it was. I had to make 3 changes in total:

1. Set a Multicast IP address in the WLAN advanced settings (requried for 2)

2. Enable 'Global Multicast' in 'Services > Media Stream> (required for 3)

3. Enable 'Passive Client' in WLAN advanced settings.

I can now access the devices over the WLAN successfully.

Thanks for your help.

View solution in original post

4 Replies 4

Mark Elsen
Hall of Fame
Hall of Fame

 

- If both bands (2.4 GHz and 5 GHz) are configured under the same SSID and mapped to the same VLAN/subnet, clients on either band will reside in the same Layer 2/Layer 3 domain. Traffic between them is routed internally by the wireless infrastructure (access point or controller).  Under these conditions it will work,

 M.



-- Let everything happen to you  
       Beauty and terror
      Just keep going    
       No feeling is final
Reiner Maria Rilke (1899)

Rich R
VIP
VIP

As @Mark Elsen says this should just work because they're all in the same broadcast domain, but there might be more to the setup that you have not disclosed which could be relevant.

For example are you using static IPs which might require the passive client feature (often needed for things like printers), or are you relying on multicast (bonjour/mDNS) which might require some tweaks on your wireless or switches?

What version of software are you using?  Make sure it's up to date as per the TAC recommended link below.  AireOS is end of life now so final release 8.10.196.0 should be used.

------------------------------
Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390

InteraX2
Community Member

Hi both,

As mentioned, this is a single WLAN/SSID/VLAN, so my understanding was that it should just work. I am running version 8.10.196.0.

@Rich R You are correct in that this is a device behind a WiFi to Ethernet adapter with a static IP address. I didn't think this would be relevant, but obviously it was. I had to make 3 changes in total:

1. Set a Multicast IP address in the WLAN advanced settings (requried for 2)

2. Enable 'Global Multicast' in 'Services > Media Stream> (required for 3)

3. Enable 'Passive Client' in WLAN advanced settings.

I can now access the devices over the WLAN successfully.

Thanks for your help.

Cool - thanks for confirming the changes that were needed - handy for anybody else with a similar issue.

------------------------------
Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's   and   TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's,   Best Practices for 9800 WLC's   and   Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
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