This article describes best practices for configuring DNS servers on the WAN interfaces of all Cisco Meraki products. One of the most common DNS configurations when assigning a static IP address to the MX is to use one ISP-provided DNS server and one well-known public DNS service such as Google (126.96.36.199). Many ISPs use their own hosted DNS server and may not have all records or have lookups to many publicly-accessible servers.
QoS allows for prioritization of traffic within the network. The Differentiated Services Code Point (DSCP) bits in the packet header are set to inform the switches which Class-of-Service (CoS) queue should be used.
All models of the Cisco Meraki MS access switches have either SFP / SFP+ interfaces for use with fiber, copper, or Twinax cables. The MS22 and MS220 series support 1GbE SFP, while the MS42, MS320, and MS420 series support up to 10GbE SFP+. Cisco Meraki offers branded SFP modules, and while we do not prevent third-party accessories from functioning, users should conduct their own tests to ensure proper compatibility.
There are circumstances where a switch will fail, and the only option is to replace the device. However, many common symptoms that may appear as device failure can be resolved with some simple troubleshooting steps. This article outlines common symptoms and troubleshooting steps for Cisco Meraki MS switches, as well as information about how to request an RMA.
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