MR 27.4 released, plenty of fixes

[cmr]

But as @PawelG noted, authentication errors still not fixed...

Wireless firmware versions MR 27.4 changelog

Bug fixes

• ‘Run Dark’ mode did not disable Ethernet LED (802.11ax MRs)
• Increased the number of MPDU’s allowed in an A-MPDU frame, improving UDP performance (802.11ax MRs)
• Enabled RTS/CTS operation (MR36/MR46/MR46E/MR56/MR76/MR86)
• Additional checks added to avoid stale connection entries for clients (All MRs)
• Bit rate listed in the client capabilities did not always match the maximum data rate described in the Data Rates graph of the client (All MRs)
• Windows clients connected to MR30H wired LAN port could inadvertently detect an IP address conflict (MR30H)
• Interoperability issue with Dynamic SMPS on certain Intel clients would result in poor performance (802.11ax MRs)
• Upon roaming to a mesh repeater, client traffic to the repeater would not egress the mesh interface, resulting in packet loss (All MRs)
• MR would encounter frequent reboots if there was an SSID configured for iPSK RADIUS and VPN Teleworker / Layer 3 Roaming with Concentrator (All MRs)
• General performance & stability improvements (All MRs)

Known issues

• Under certain conditions, successful WPA2-PSK connections are reported as failed under Wireless Health event logs (All MRs)
• Downstream VOIP RTP Packet Loss (MR42/MR42E/MR52/MR53/MR53E/MR84)
• Sporadic packet loss & instability on Layer 3 roaming & Teleworker VPN SSID's (All MRs)

[DarrenOC]

Hi Charles.  You noted this one?

• Downstream VOIP RTP Packet Loss (MR42/MR42E/MR52/MR53/MR53E/MR84)

[cmr]

@DarrenOC it's been there for ages, in fact I can't remember when it wasn't a known issue!

Edit: it appeared in 26.5...

[CptnCrnch]

Smooth upgrade on MR42 and MR45 so far! 😎

[Adam2104]

How is this still not fixed?

• Downstream VOIP RTP Packet Loss (MR42/MR42E/MR52/MR53/MR53E/MR84)

This has been broken for at least 18+ months. It makes Facetime calls absolutely unusable. The only workaround it to reset all DSCP values on the switch side to (presumably) prevent the traffic from landing in whatever queue on the AP is jacked up. 

[thomasthomsen]

Its nice to see that something is being done about the wired MR30H ports.

There are still some strange issues, perhaps this fixes it.

[JohnD]

27.4 is now a stable release candidate! Well deserved IMO, the 27.3 and 27.4 releases have both been rock solid. Really a no brainer for WiFi 6 APs but even on my MR53 the performance has been more consistent.