HP J9021A 2810-24G ProCurve Switch, 24 Port Ethernet Netzwerk Switch - GEBRAUCHT-

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Standort: Kawkawlin, Michigan, USA

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Artikelzustand: Gebraucht: Artikel wurde bereits benutzt. Ein Artikel mit Abnutzungsspuren, aber in gutem Zustand ... Gebraucht: Artikel wurde bereits benutzt. Ein Artikel mit Abnutzungsspuren, aber in gutem Zustand und vollkommen funktionsfähig. Bei dem Artikel handelt es sich unter Umständen um ein Vorführmodell oder um einen Artikel, der an den Verkäufer nach Gebrauch zurückgegeben wurde. Weitere Einzelheiten, z. B. genaue Beschreibung etwaiger Fehler oder Mängel im Angebot des Verkäufers. Alle Zustandsdefinitionen aufrufenwird in neuem Fenster oder Tab geöffnet

Type: Ethernet Switch

Brand: Hewlett Packard

MPN: J9021A

UPC: Does Not Apply

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4.3

18 Produktbewertungen

11 Nutzer bewerten dieses Produkt mit 5 von 5 Sternen
4 Nutzer bewerten dieses Produkt mit 4 von 5 Sternen
1 Nutzer bewerten dieses Produkt mit 3 von 5 Sternen
1 Nutzer bewerten dieses Produkt mit 2 von 5 Sternen
1 Nutzer bewerten dieses Produkt mit 1 von 5 Sternen

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von mortree
27. Jun. 2019
Great layer 2 switch for small less critical networks - weakness: clear/reset switches & updates EOL
Cheap access to basic layer 2 enterprise level gigabit switch features for more complex home users and smaller, less critical businesses -- QoS, VLANs, LACP (combine ports for higher speed), multicast management, port security at MAC or EAP (certificate/RADIUS), etc. Easy case to clean and replace fans. The biggest weaknesses are (1) that its last firmware update was end of 2017 (possibly unpatched switch exploits) and (2) that the clear and reset switches wear and break easily. NOTE: The switch bodies on the motherboard can be removed to allow emergency operation of the exposed flexible metal dome mechanism. But such emergency is a very dangerous open case operation. It risks shorting the dangling motherboard against case or giving the operator a potentially lethal shock from the ... Cheap access to basic layer 2 enterprise level gigabit switch features for more complex home users and smaller, less critical businesses -- QoS, VLANs, LACP (combine ports for higher speed), multicast management, port security at MAC or EAP (certificate/RADIUS), etc. Easy case to clean and replace fans. The biggest weaknesses are (1) that its last firmware update was end of 2017 (possibly unpatched switch exploits) and (2) that the clear and reset switches wear and break easily. NOTE: The switch bodies on the motherboard can be removed to allow emergency operation of the exposed flexible metal dome mechanism. But such emergency is a very dangerous open case operation. It risks shorting the dangling motherboard against case or giving the operator a potentially lethal shock from the exposed internal switching power supply (50K-100K voltages). Think super taser with significantly higher current than any police taser and possibly extended duration. Noise is fairly modest for rackmount switch if you have latest firmware (but pretty loud under older versions and for a few seconds after reboot). Regardless many people will not want it directly in sleeping, work, listening (TV/music) rooms or any other quiet or long inhabited space. Nor should the switch be sealed in small closets or cabinet with no air circulation or in rooms exposed to weather extremes - though the unit has pretty good operating humidity (15%-95% noncondensing) and heat tolerance (32F-113F). The command line interface (CLI) closely follows Cisco standards for the complete configuration of all features when connected by Telnet, SSH, or direct console cable. But the switch also supports a web interface for configuration of the most important basic setup items for quick and easy start. This is also a security consideration especially prior to correct configuration of limited IP certificate on switch to allow HTTPS or SSH. The CLI also supports a text menu system serving a similar purpose with slightly more advanced features (esp port aggregation).
Bestätigter Kauf: JaZustand: GebrauchtVerkauft von: vtkwholesaleinc
von 1lowbid
25. Okt. 2017
Some issues
Unit arrived packed in large-bubble bubble wrap, appropriate to the unit. The box was less sturdy than needed and was a bit squashed top, bottom, and all sides. Still, unit appeared okay, so I rolled with it. Fired it up, HP mgt software couldn't find it, couldn't see it on network, decided it had been reset to factory. That means console-only access. No problem, old configs should have been wiped anyway (best practice) and I've got a cable. Hmm, seems HP uses a different pinout and I can't connect. No issue, I'll borrow one. Erps, no one I know has one. Roll with it. I'll put it in place (home lab, not a production environment) and use it as a dumb switch/hub until the cable arrives. Yeah, not so good. Two ports won't light up, even after moving cables from other working-on-new-switch ... Unit arrived packed in large-bubble bubble wrap, appropriate to the unit. The box was less sturdy than needed and was a bit squashed top, bottom, and all sides. Still, unit appeared okay, so I rolled with it. Fired it up, HP mgt software couldn't find it, couldn't see it on network, decided it had been reset to factory. That means console-only access. No problem, old configs should have been wiped anyway (best practice) and I've got a cable. Hmm, seems HP uses a different pinout and I can't connect. No issue, I'll borrow one. Erps, no one I know has one. Roll with it. I'll put it in place (home lab, not a production environment) and use it as a dumb switch/hub until the cable arrives. Yeah, not so good. Two ports won't light up, even after moving cables from other working-on-new-switch connections to those ports. Then find other ports that do "light up" can't talk to other ports on the switch. So, appears there is still *some* kind of config in place that is segregating ports, in addition to the two dead or turned-off ports. So still waiting for my HP console cable to arrive so that I can find out if I have a config turning off or blocking ports or if I have a defective unit. My fault for not investigating the cable issue when I bought (needing a cable would not have changed my purchase decision, just needed to buy that at the same time), but less thrilled with what appears to be an old config left in place OR a defective unit. Once the cable arrives (overdue), I'll investigate further and update this if possible.
Bestätigter Kauf: JaZustand: GebrauchtVerkauft von: cardinalss01
von escalade34
19. Okt. 2018
Hp Switch
Great product. Came faster than listed. Works as advertised. However, if i could post the only complaint I have with this device would be that it is quite a bit louder that my other switch. I think it's how the fans are situated. Also, I was not able to access the web ui to properly setup the switch.
Bestätigter Kauf: JaZustand: GebrauchtVerkauft von: wheelerdealerinc
von madlab1970
02. Jun. 2016
HP Procurve
HP has great quality switches. they have a nice layout good indicators and the ports are easy to get to.
Bestätigter Kauf: JaZustand: GebrauchtVerkauft von: 4yourbusiness
von chev*ss
26. Mai. 2020
Good but very old
It's stable but very old and to use the web gui you have to use way old dated Firefox and Java. A real pain to set up and use.
Bestätigter Kauf: JaZustand: GebrauchtVerkauft von: genuine-autotech

HP J9021A 2810-24G ProCurve Switch, 24 Port Ethernet Netzwerk Switch - GEBRAUCHT-

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HP J9021A 2810-24G ProCurve Switch, 24 Port Ethernet Netzwerk Switch - GEBRAUCHT-

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Artikelbeschreibung des Verkäufers

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S&S INDUSTRIAL SURPLUS

99,8% positive Bewertungen•214.691 Artikel verkauft

Detaillierte Verkäuferbewertungen

Beliebte Kategorien in diesem Shop

Verkäuferbewertungen (22.748)

Produktbewertungen & Rezensionen

Relevanteste Rezensionen

Great layer 2 switch for small less critical networks - weakness: clear/reset switches & updates EOL

Some issues

Hp Switch

HP Procurve

Good but very old

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