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1answer
27 views

1G communications between two SFP/SFP+ ports

I have two Arista switches and I would like them to communicate in 1G through a direct link. I know of three of options: Use copper RJ45 and SFP-to-RJ45 transceivers on both ends Use optical, with ...
1
vote
1answer
62 views

tcpdump on a capture card

I have a server with a NT20E Capture Card (2x10Gb Packet Capture Card over PCI Express). I want to be able to dump the output to a pcap format but because this isn't listed as an ethX-interface ...
2
votes
2answers
147 views

How do fiber Ethernet transmitters set their power output?

I've noticed that fiber-optic SFP modules from Cisco and the like often specify a range of power outputs, such as -3 to -9 dBm. What determines the actual power output we should expect to see from ...
1
vote
1answer
357 views

meaning of 1GE/5GE SFP in Cisco Switches

What is meaning of "1GE/5GE SFP Ports" in switches. What does it stand for? I dont have much knowledge of networking, but I just wanted for information. Thanks
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votes
2answers
124 views

Cisco SFP for single-strand single mode connection over 10km

Is it possible using only Cisco equipment to link two sites approximately 15km apart using only one single mode fiber strand.
3
votes
1answer
527 views

SFP+ vs CAT6a for 10GbE

We are looking to implement 10Gig ethernet for our ESX hosts and SANs. There are a number of solutions we have been looking at and it has really boiled down to what will give us the best bandwidth. ...
3
votes
1answer
293 views

Do HP switches lock their SFP Ports?

Does HP lock the SFP ports on their switches? I'm looking in particular at an HP E5406zl, but I imagine it's a policy across all their switches or all their switches at a particular level. We're ...
1
vote
1answer
83 views

Combo ports and SFP

I have Netgear GSM7324s prosafe switch. Switch has 24x1G ports. 4 ports are labeled as combo ports while 2 are labeled as SFP ports. I connected 2 PCs (each having 1gig and 10Gig NICs), with the ...
12
votes
1answer
603 views

How does BER compare between different 10GbE physical media?

I am under the impression that you should use optical for 10GbE networking because of a BER (bit error rate) several orders of magnitude lower than copper. I'm pretty sure I previously found ...
6
votes
3answers
412 views

Mixing SFP's with different speeds

I need to install new SFP's in a location; however, I need them to connect to existing switches and I'm not sure what SFP type they are. All I know is I've got MM Fiber. If I installed Cisco ...
1
vote
3answers
856 views

Fibre (Fiber) Optic - Mixing SFP's and Switches

My generic question is: Can you mix switches on the opposite sides of a fibre link, or more accurately different manufactuors tranceivers. We just bought several new HP ProCurve v1810 series switches ...
1
vote
1answer
464 views

What command enables non-Arista SFP+ in the DCS-7124s?

What command enables non-Arista SFP+ in the DCS-7124s? And how do you enter it?
2
votes
4answers
551 views

Trunk fiber ports on switches

We are planning to purchase new switches for our network. We have three buildings in the same area that are all connected by fiber. Our main building is very large and needs to be connected by fiber ...
0
votes
1answer
173 views

HP networking unstable over fiber connection

I have a 3com Baseline Switch 2928 that's connected over fiber to a 3com superstack 4500. The fiber is singlemode and has the suitable SFP modules on both switches. The switches (and connected ...
0
votes
3answers
559 views

SFP Tranciever Cost. Use CAT 6 over short distances?

Hello I have two HP V1910-48G, which from my understanding are re-branded 3Com products. I'm running out of ports on both switches and both are deployed in different scenario's. 1) I need more ports ...
0
votes
1answer
4k views

How do I get past “SFP Validation Failed” on a FET-10G transceiver on a Nexus 5548UP?

I inserted a FET-10G (Fabric Extender Transceiver) SFP transceiver in my Nexus 5548UP and I got "access down" "SFP Validation Failed" in show interface. FET-10Gs came with my 2232's so I figured ...
1
vote
1answer
4k views

How do I get past “SFP Validation Failed” on a SFP-GE-T transceiver on a Nexus 5548UP?

I inserted a SFP-GE-T (Gigabit RJ-45) transceiver in my Nexus 5548UP and I got "access down" "SFP Validation Failed" in show interface. According to the Cisco Gigabit Ethernet Transceivers ...
2
votes
1answer
107 views

Can a 4GE SSM accept Twinax connections if the speed is set to 1000 on the switch?

I have a Nexus 5548UP and an ASA 5510 with the 4GE SSM. The 4GE has SFP ports and I would like to use them and conserve my Gigabit SFP transceivers for other uses. The Twinax will insert into the ...
0
votes
2answers
79 views

What SFPs can be used with Dell MD36x0f storage?

I've not found any information about used SFPs and supported cable length (which is what I actually want to know). Online configuration wizard does not allow to choose SFP type, only quantity. One ...
2
votes
2answers
604 views

How do I connect 100BASE-T (iDRAC6) hosts into a Nexus 2232PP via SFP+?

I have a dilemma. I want to have an end-to-end 10 Gigabit Ethernet network over SFP+, but my Dell servers have iDRAC6 which only works on 10/100BASE-T. The closest thing I could find was the GLC-T ...
-1
votes
1answer
247 views

3COM Switches that have 1000Base-X SFP ports

I have been upgrading switches at the company I work for and their technology here is prehistoric, but the new switches I have received from my director are the 3COM 2928-SFP Plus. I have been reading ...
1
vote
2answers
2k views

What is the command to enable 3rd party SFP+ transceivers on Arista switch?

Does anyone know the command that enables the usage of 3rd party SFP+ on an Arista 7148S switch?
1
vote
3answers
147 views

10Gbe connection to 3 sites using Single Mode fibre. Require High Availability

An industrial site needs to link 3 seperate areas in a building in such a way that all the switches are on the same network and sharing the same wan link. The wan link will only be coming in from one ...
-1
votes
1answer
442 views

Experiences with (cheap) third-party SFP modules? [duplicate]

Possible Duplicate: Are Arista SFP Transceivers Compatible with Cisco Switches? As the topic suggests, it would be interesting to hear what some of you with more experience have to say ...
2
votes
4answers
3k views

SFP+ twinax cable compatibility

How compatible are twinax SFP+ cables when used with different hardware vendors' equipment? E.g. are Cisco SFP+ cables fine between an Arista switch and a Solarflare card? How about an Amphenol cable ...
1
vote
4answers
474 views

Must I install SFP+ transceivers in pairs?

I'm expanding the switch in our rack to a 10 GbE fiber internet feed. Specifically: we have an HP 2910al will expand the switch with a J9008A 2-port 10GbE SFP+ module will plug in 1 (2?) J9150A ...
3
votes
5answers
3k views

Are Arista SFP Transceivers Compatible with Cisco Switches?

Are the Arista SFP transceivers compatible with Cisco switches? For example, if I go to the CDW site they show multiple transceivers that vary in price. How can I know that they will work in the ...
0
votes
1answer
413 views

SFP Uplinks from Cisco WS-C2960S-24TS-L to Non-SFP Ports

Our department recently purchased new WS-C2960S-24TS-L switches to act as our cabinet switches. However, these will be uplinked into existing WS-2960S-24TS-L that act as the aggregation switches. ...
1
vote
2answers
395 views

Do SFP modules have their lasers off when the port is adminstratively down?

I have a Cisco SFP module that I might need in a few weeks, I don't want to pull it out but I wanted to know if I shutdown the port does it turn off the SFP module, I don't want to leave the laser on ...
0
votes
1answer
240 views

Do 3Com switches support generic SFPs?

I have a 4200 series switch with an empty sfp port, and existing unused fiber run (62.5nm multimode) to another building that I hope to bring up, with a 1000base-SX connection on the other end. ...
10
votes
4answers
8k views

Why would I choose Copper over SFP+ for 10GbE?

We're speccing up some 10GbE switches for integrating a few older servers into our Equallogic SAN, and we're noticing quite a price gap between SFP+ and Copper (Cat 6A) equipment (Dell 8024F vs 8024). ...
2
votes
1answer
6k views

How compatible are sfp's really?

How compatible are sfp modules between devices. For example, am I likely to be able to plug something like this into a cisco, hp, or other switch with mini gbic ports? ...