TIPS Meraki Router question, losing SIP connection

[cityguru]

I am having an issue with my Polycom phones, they are losing there registeration after some time. Keep in mind that my keep alive is set short enough to 30. After rebooting my phones everything is fine, but having to reboot frequently to keep the phone alive is kind of annoying.

When i replaced the router i had no issues which makes me think its something to do with my Meraki router

any ideas?

 

[Porch]

Post up some logs and/or packet captures.

 

[cityguru]

Ugh, dont have any and since then client switch to the other router, I wont likely be able to get them. I would be open to some ideas and i will certainly of course understand to take any advice with caution considering its not based on logs and packet captures.


The one thing which i thought really odd about Meraki, is that you essentially define acceptable inbound traffic through the outbound traffic section. Weird. And if you do set inbound Layer 7 filters its only for DENY.

 

[Porch]

Normally, that problem is related to NAT timeouts for UDP, but without a packet capture or log from the server, I can't say for sure.

 

[cityguru]

So assuming it was due to NAT timeouts, what would one do to resolve the situation. Keep in mind the Keep Alive settings (or register expiration) are set to 30, which is already pretty frequent.

 

[Porch]

Can you change the phone to TCP? I just had a Mitel do something screwy and would mess up the NAT table in the router. Switching it to TCP fixed the issue.
Also, set the Keep Alive to 10 seconds and see if that works.

Without the Asterisk logs, this is really a shot in the dark.

 

[cityguru]

Nah these are Polycom so no TCP option

 

[rjaiswal]

If you have Meraki, then you have support. What does support say?

 

[magna.vis]

If you have Meraki, then you have support. What does support say?

I was going to say the same thing. Meraki support is awesome. You should at least have them check it out.