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Configuring chromecast on SSID?

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Configuring chromecast on SSID?

Has anyone had any success configuring a chromecast device?

22 REPLIES
Kind of a big deal

Re: Configuring chromecast on SSID?

Yes. I didn't have to do anything special. It just worked.
Head in the Cloud

Re: Configuring chromecast on SSID?

We've had a few issues with Chromecasts on our SSID; What firmware version are you running? I've updated to 25.6 and now things to appear to be working fine.  However, I'm assuming it could be related  to the known bug "investigation causes 2.4GHz radios to become unresponsive" as per the firmware release notes. 

Eliot F | Simplifying IT with Cloud Solutions
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Kind of a big deal

Re: Configuring chromecast on SSID?

I am running 24.8.
Head in the Cloud

Re: Configuring chromecast on SSID?

We still seem to have ongoing issues now on 25.6. We are running MR32's - Probably time to engage support however I'm assuming it's related to the 2.4ghz Radio issue reported in the caveats 

Eliot F | Simplifying IT with Cloud Solutions
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Getting noticed

Re: Configuring chromecast on SSID?

I have similar issue and couldn't find fix yet. I have first gen. of Chromecast.

Kind of a big deal

Re: Configuring chromecast on SSID?

One tip I can give is don't use a domain of ".local" in your DHCP scope. If you are using Meraki you might now have a domain defined at all, but using ".local" makes it unreliable (".local" is a reserved domain for when there are no DNS servers).
Comes here often

Re: Configuring chromecast on SSID?

We've had similar problems, regardless of whether the Chromecast is generation 1 or 2 (have not tried the Ultra).

 

It's a bit hit or miss which is making it weird.  ~140 classrooms are now outfitted with Chromecasts.  Our high density schools have MR53's, while our lower density schools have MR33's.  The schools with MR53's report no issues with the Chromecasts, however we are increasingly (last 1 month or so) getting reports that the Chromecasts attached to MR33's are unable to cast properly.  They will display the screen cast, but then when you go to play dynamic content like LucidPress, youtube, WeVideo etc, nothing happens.  Rebooting the AP does not make a difference, though we did find that hard wiring the Chromecasts to a VLAN within the same layer 3 segment resolves the problem.  I do not suspect it is related to the AP being overwhelmed, nothing indicates that and we get similar results even if I go to the school when no one else is in it.

 

So the problem seems specific to the AP model #, not the Chromecast generation.

pjc
Getting noticed

Re: Configuring chromecast on SSID?

Hi Philip, can you elaborate a bit on the issues you have seen using .local domain ?  Does it cause a problem with the AP or clients or both ?  Not heard or can find anything, so would be interested in your findings - Thanks

Kind of a big deal

Re: Configuring chromecast on SSID?

RFC6767 reserves ".local" for multicast devices (jump to number 3, "Multicast DNS Names").

https://tools.ietf.org/html/rfc6762

 

Chromecast uses this to register itself on your local domain.  When a device wants to find a chromecast it sends a multicast DNS query looking for chromecasts in the domain ".local".

https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-mobility/119017-config-chromec...

 

If you use ".local" for unicast services (AKA "normal" IP address), and you have a DNS server defined then you screw this mechanism up,  Now the queries will get sent to your defined DNS server, which will know nothing about the multicast DNS service, and fail.

 

 

So the moral of the story is never used reserved DNS domains on your network, especially ".local".

Here to help

Re: Configuring chromecast on SSID?

Also make sure that your SSID is not isolating clients.
New here

Re: Configuring chromecast on SSID?

What model access points are you using?

Conversationalist

Re: Configuring chromecast on SSID?

Hi 

I found a solution for this you need to change the DHCP leasing from in the SSID Settings from NAT DHCP to NAT Bridge Mode DHCP it works, we spend the whole day resolving this but got to the bottom of it.

 

The chrome cast does not like going on the internet via NAT DHCP.

 

A

Comes here often

Re: Configuring chromecast on SSID?

Correct.  This is because NAT DHCP networks inherently enable client isolation.

 

 

Conversationalist

Re: Configuring chromecast on SSID?

Hi 

I found a solution for this you need to change the DHCP leasing from in the SSID Settings from NAT DHCP to NAT Bridge Mode DHCP it works, we spend the whole day resolving this but got to the bottom of it.

 

The chrome cast does not like going on the internet via NAT DHCP.

 

A


@JPena wrote:
Also make sure that your SSID is not isolating clients.

 

Conversationalist

Re: Configuring chromecast on SSID?

Hi 
I found a solution for this you need to change the DHCP leasing from in the SSID Settings from NAT DHCP to NAT Bridge Mode DHCP it works, we spend the whole day resolving this but got to the bottom of it.
 
The chrome cast does not like going on the internet via NAT DHCP.
 
A
New here

Re: Configuring chromecast on SSID?

Yes.. Under wireless account control changed Client IP assignment to bridge mode. Started working.

Head in the Cloud

Re: Configuring chromecast on SSID?

I have chromecast capable wired AV equipment on a VLAN that is also used by wired workstations and securely attached wireless devices. I do not use bridge mode. An unsought benefit is that once the wireless device has connected to the AV device and the correct stream is playing, the phone can be turned off and the stream continues to play.

 

The SSID is in Layer 3 roaming mode.

 

From a security point of view, it is preferable to keep AV hardware on a different VLAN to corporate networks. One can either get clever with CIDR super/sub netting or make creative use of DMZ-style configurations.

 

Robin St.Clair | Principal, Caithness Analytics | @uberseehandel
Kind of a big deal

Re: Configuring chromecast on SSID?

Layer 3 roaming mode does use bridging unless you roam to a different AP...
Head in the Cloud

Re: Configuring chromecast on SSID?


@PhilipDAth wrote:
Layer 3 roaming mode does use bridging unless you roam to a different AP...

I understand that, ;-()

 

However, I am led to believe that the Meraki way suggests that Bridge mode be used for typically static devices, whilst Layer 3 roaming be used for mobile devices. There is a certain logic in this. My rule of thumb is to wire anything that doesn't move, so largely unlikely to use the former option. Habitually I reserve a portion of the available IP addresses for any given (V)LAN for those devices that require a fixed IP address, but can't remember when I last had to make use of this. All my AV kit is wired and gets an IP address from a DHCP server.

 

 

Robin St.Clair | Principal, Caithness Analytics | @uberseehandel
New here

Re: Configuring chromecast on SSID?

I've found that a lot of "smart" devices do simply not work reliably using layer 3 and concentrator.

Bridge mode however works perfectly, but activating the concentrator only allows reliable discovery and control of devices on the same AP as the management device.

 

Even hardwired devices become either noticably slower and more clunky or simply do not reliably work.

 

My guess is that most of these devices are a little bit too "clever" for their own good in trying to do transparent discovery and management.

 

Someone smarter than me can probably expand on this.

Head in the Cloud

Re: Configuring chromecast on SSID?

The problem with most smart devices is that many of them are truly dumb as far as communicating is concerned. Mostly because they have been designed by snowflakes for snowflakes. WiFi chipsets usually selected on the grounds of price alone, no awareness of security, or worse they flagrantly lie about the need for security and the risks involved.

 

Keep this K-R-*-P on a network of its own.  (Everybody's favorite radio station)

Robin St.Clair | Principal, Caithness Analytics | @uberseehandel
GT
Here to help

Re: Configuring chromecast on SSID?

Thank you this worked very well


@ASJ2018 wrote:

Hi 

I found a solution for this you need to change the DHCP leasing from in the SSID Settings from NAT DHCP to NAT Bridge Mode DHCP it works, we spend the whole day resolving this but got to the bottom of it.

 

The chrome cast does not like going on the internet via NAT DHCP.

 

A


@JPenawrote:
Also make sure that your SSID is not isolating clients.