Are Jumbo Frames supported by the D-Link DIR-842? If so, which maximum size?
It supports 1 Gbit/s so I guess it should but I'm not sure, haven't found much while Googling.
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Have you taken a look at the specifications? – Ramhound Jul 30 '17 at 16:29
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Related: https://superuser.com/questions/197569/jumbo-frames-on-dir-655?rq=1 – Ramhound Jul 30 '17 at 16:29
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Yes; They are supported based on my research. How large of a frame will depend on the clients connected to the LAN ports – Ramhound Jul 30 '17 at 16:38
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The specs doesn't mention "Jumbo Frames" and there's no option in the web UI to configure it in the DHCP server. – Mikael Dúi Bolinder Jul 30 '17 at 18:37
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Yes, jumbo frames are supported in the LAN part of the DIR-842. I've tested this by connecting two gigabit NICs to the LAN ports and sent 9 KB frames between them.
But, the maximum MTU size for the WAN (under IPv4 settings) is 1500, configurable in the web GUI.
Mikael Dúi Bolinder
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1Could you edit your answer to be more specific about what exactly you tested, and how? Did you send a 9k ping from a machine on one LAN port to a machine on another LAN port? Did you send a 9k ping to the router itself and get a reply back? Did you send a 9k ping from LAN to WAN? Did you run a sniffer to ensure you were sending the 9k ping as a single packet? – Spiff Nov 09 '18 at 02:02
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