IP CAM performance issue with X450 G2

[Arjumand_Qazi]

Hello, looking for a possible solution, just unboxed X450 G2 and connected IP Cams to it, it should work smoothly. but here video is not stable and lagging.

[Arjumand_Qazi]

will try to elaborate further..

by default for any switch vendor the ports will be in "autonegotiate" mode and the ports will be in full-duplex operation mode. now if we want to connect a half duplex device and "autonegotiate" is enabled, what should the "sh port" command show? half duplex or full duplex?

[Erik_Auerswald]

Duplex is negotiated, thus the show output should display the negotiated mode. If the port does not support half-duplex, you would not expect that to ever show "half-duplex."

[Arjumand_Qazi]

with cisco and extreme same is the out, when we do show ports command. unfortunetely i dont have output for extreme right now.
the Full-Duplex suggest the end device connected to the switch is using full-duplex operation, can it be possible for the end device to be half duplex and here the port is full-duplex (shown). or there will something like "duplex mismatch" added to this output.

since there is no configuration on even cisco switch to the default mode here also will be "autonegotiate" if autonegotaite is enabled it doesnt matter if the end device incoming connection is half duplex or full.. the port will always show full-duplex.. please correct if i am wrong here.

[Erik_Auerswald]

Back in the day, Ethernet supported half-duplex only. Switches allowed full-duplex operation as long as point-to-point links were used. Auto-negotiation is used to determine if half- or full-duplex should be used. If auto-negotiation does not negotiate full-duplex, half-duplex is used.

Many recent switch ASICs from Broadcom do not support half-duplex operation, thus the problems with really old end systems that do not properly support auto-negotiation and/or full-duplex operation.

Duplex mismatch cannot be detected reliably using just standard Ethernet, thus some proprietary method to convey that information is used. Cisco Discovery Protocol can include information about the duplex mode used, which is used by (some) Cisco devices to report "duplex mismatch" between e.g. a Cisco router and a Cisco switch. That does not work for other device combinations.