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About StevenRandolph
StevenRandolph
Just browsing
Member since Jan 16, 2018
Jan 18 2018
Royse City
20+ years preforming Network engineering and border security
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Jan 16 2018
6:09 PM
Well as a blind hail Mary pass, while I have been on this form I have had my hands on tech in Cali perform a factory restore on the primary US hub, and low and behold all of my US site can now call with no problem. Spoke to Spoke, Hub to spoke. Looks like I will leave my EU hub alone until I can get a Meraki engineer online to see this s**t.
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Jan 16 2018
5:58 PM
The problem is it is present when the MX is in hub mode, however when i change it back to spoke the only thing that isn't there is the MGCP packets. so if isn't a meraki issue what is it. because it isn't a VOIP switch issue. Keep in mind all other traffic works just fine.
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Jan 16 2018
5:27 PM
My voice guys has been battling this over the 2 weeks, initaily it was 2 or three sites and now it is network wide. Initially we thought is was a Shoretel issue. it wasn't until Thursday last week they brought me in and this is what i have found when performing packet captures. Captures from Hub to Spoke or Spoke to Hub depending on the who initiates the call 1. Captures show the initial MGCP packets and all following UDP packets 2. calls complete as normal Captures of spoke to spoke 1. it dose not matter who initiates the call we never see the initail MGCP traffic its like it is getting dropped before it leaves the LAN of the initiator. However we see the UDP packet from the initiator but the call fails due to the fact the intial MGCP are dropped. well that sounds like a VOIP switch issue but if you go for hub to spoke or spoke to hub it works. Well i thought let configure 2 spokes that would not work, as hubs. If it is being block at the primary hub the call should not work right, well here is the confusing part. after i configured the 2 spoke site as hubs the call went through between them. Keep in mind that all MGCP packets still have to transverse the primary hub in order to set up the call. So i stepped back and took a capture of the calls and low and behold i see the MGCP packets transverse the whole network. Once i place them back into spoke mode we don't even see the MGCP packets on the LAN all over again.
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Jan 16 2018
5:02 PM
Only one hub servers for the primary server location so there is no possible way to have asymmetric routing. Presently i have 2 hubs one located in the US and one in EU. i have a third Hub that stays offline unless we need to turn up the US DR site.
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Jan 16 2018
4:24 PM
Has any one experienced Meraki MX devices that decide to stop sending MGCP packets. I have a network of 65+ devices setup in a Hub spoke design with multiply VPN concetrators that has operated for over 2 years. Now in the last 3 weeks all of a sudden spoke branches can not make calls to other spokes. However a hub to spoke works and a hub to hub works. Packet captures show the MGCP packets between hub and spokes, but when trying the spoke to spoke capture we never see the MGCP packets transmit. Of course the Meraki support wants to say its the border switch or ASA, However we have not made any changes to those devices in the last 2 or 3 months. The only real changes that have been made was the Firmware update of the Meraki MXs back in October.
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