# Can't connect to mixed-mode network with RCM6650W

**URL:** <https://forums.digi.com/t/cant-connect-to-mixed-mode-network-with-rcm6650w/18830>\
**Category:** Rabbit Software\
**Tags:** wifi, security, rcm6650w\
**Created:** [October 21, 2017, 7:17pm UTC](https://forums.digi.com/t/cant-connect-to-mixed-mode-network-with-rcm6650w/18830 "2017-10-21T19:17:21Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dilbertgod](https://avatars.discourse-cdn.com/v4/letter/d/7993a0/32.png) [@dilbertgod](https://forums.digi.com/u/dilbertgod)\
**Post date:** [October 21, 2017, 7:17pm UTC](https://forums.digi.com/t/cant-connect-to-mixed-mode-network-with-rcm6650w/18830/1 "2017-10-21T19:17:21Z")

</div>

I’m currently experiencing this issue right now using a NETGEAR R7000 running in mixed mode(WPA-PSK [TKIP] + WPA2-PSK [AES])

RCM6650W is unable to connect using TKIP or AES.. nothing seems to work. I have no problem connecting when the router network is set exclusively to AES, or no security (open).

There were issues with this last year with a hotfix implemented:

> <https://github.com/digidotcom/DCRabbit_10/commit/8b736d61833b1bcbcca9a133e49244f9ce464dd9>
>
> On a mixed mode network, it's possible to use CCMP (pairwise cipher) for all enc…ryption, CCMP for decryption of unicast frames, and TKIP (group cipher) for decryption of broadcast frames. Due to a bug, the stack wasn't able to find the pairwise cipher for sending its initial frames (typically DHCP or ARP discovery) and would use the group cipher instead. On an all-CCMP (WPA2) or all-TKIP (WPA) network, the pairwise and group ciphers are the same, and were therefore unaffected by the bug.
> 
> Resolution is to make use of the pending pairwise cipher in \_\_wifig\_sendpacket(), but only if we aren't sending an EAPOL handshake frame.
> 
> Resolves issue RCM-109.

I am running DynC 10.72C, and the hotfix does exist in my version.

Update:

I have had a little bit of success connecting to my mixed mode network since creating this topic, here’s the results:

## What works:

Auth: WPA\_PSK  
Encr: TKIP

Auth: WPA\_PSK  
Encr: ANY

Auth: ANY  
Encr: TKIP

Auth: ANY  
Encr: CCMP

## What doesn’t work:

Auth: WPA\_PSK  
Encr: CCMP

If I’m going for a WPA2 [AES] connection, then using ANY + CCMP should get me there..

but it does seem a bit odd that I can’t just specify WPA\_PSK + CCMP to achieve the same result

Thanks

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<div class="post-metadata">

**Author:** ![TomCollins](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/tomcollins/32/37_2.png) [@TomCollins](https://forums.digi.com/u/TomCollins)\
**Post date:** [October 23, 2017, 3:27pm UTC](https://forums.digi.com/t/cant-connect-to-mixed-mode-network-with-rcm6650w/18830/2 "2017-10-23T15:27:27Z")

</div>

Are you following this warning from ifconfig() documentation?

```auto

     If connecting to an access point configured for "WPA mixed mode", you must
     enable TKIP and CCMP (IFPARAM_WIFI_ENCR_TKIP | IFPARAM_WIFI_ENCR_CCMP) in
     order to use CCMP encryption. This is because mixed mode networks use
     TKIP for broadcast messages, and either TKIP or CCMP (depending on the
     client's settings) for unicast messages.

```