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Frequently Asked Questions

Can my existing Cat 5 cable be used for Gigabit switch?

FAQ
Yes. The IEEE 1000Base-T specification supports the use of Cat 5, or enhanced Cat 5 cable, for successful gigabit transmission running Gigabit Ethernet on Cat 5 cabling is easier than wiring for 10/100M bit/sec Ethernet. The 1000Base-T specification provides for the automatic negotiation of link characteristics, including automatic crossed cable correction.

Q: How long the Cat 5 Ethernet cable I can connect to the switch?

Frequently Asked Questions for Gigafast Brand Switches
BaseTX devices to the switch always limit the cable distance to 100 meters (328 ft) as defined by IEEE specification.

Can I use any Cat 5 cable or must I use the orange OCTOPUS Cat 5 cable?

Opus Technologies - OCTOPUS Multi-Room FAQs
If you wish to, you can use any type of Cat5 or CAT5e cable. OCTOPUS provides colour-coded Cat5e cables which make our systems easy to install where multiple runs of Cat5e cable are being used for different systems in a property.

Why should I use Gigabit switch?

FAQ
The most important place to implement Gigabit solutions are at the data center (or backbone) and between the workgroup and the data center. Essentially, any switch to switch connections in the network should be Gigabit. This allows PCs using 10/100 adapter cards to turn on to 100 Mbps without creating a bottleneck in the backbone. Busy data center servers should also be equipped with Gigabit adapter cards.

How do you connect the LC-8 or LC-16 to a computer? Do you use a Cat 5 cable?

Frequently Asked Questions - Light Controllers
ANSWER: Yes, you can use Cat 5 cables to connect things together (PC to LC unit and LC unit to LC unit). There are two options to do this: Purchase adapters for each LC unit and then RJ45 splitters for each board you wish to connect to. We will start selling these items on our store shortly. Example:

If you do use the Cat 5 cable are the old serial adapters compatible or do you need a new one?

Frequently Asked Questions - Light Controllers
ANSWER: The old serial adapters will work. One just needs a few more of them and different genders. In some cases (if you have a very old adapter that you purchased from ChristmasCave) some of the query functions won't work because the adapters ChristmasCave sold early on were output only and didn't have a wire for information to travel back to the PC. The control of the LC units should still work.

If Cat 5 is OK, what are the "Pin–Outs" for this cable?

USITT DMX512 FAQ
Note 2: Pin 8 should be wired as signal common even if pins 3 and 6 are NOT wired so that both conductors 7 and 8 are at equal potential. Some published copies of ANSI E1.11-2004 show incorrect pin numbers in Table 4 on page 15. This table is correct. DMX512/1990 says the optional data link is for data – that's all. It doesn't say anything about the direction of the data or what kind of data, other than it conforms to the electrical specification of EIA 485.

Can use one single CAT 5 network cable to transmit video signals and control data?

Unshielded Twisted Paired Transmission - FAQ
Yes, using 4 pairs CAT 5 twisted pair cable that could use FORESIGHT model TTP414V/TTP444 to transmit 4 set video signals. You can also use our

Why should I switch from Cable?

Frequently Asked Questions | DISH Network Outlet
Current FCC reports have shown that on average, DISH Network will save you up to 35% over cable. Not only that, but where DISH Network out does cable is that 100% of DISH Network's channels and programs are 100% digital! You may be able to order "digital" cable however, not all the channels are digital most are still analog!

What switch is suggested for a Gigabit Ethernet application and why?

Pericom - Frequently Asked Questions (FAQs) - By Product Fam...
The PI3L301D is suggested for Gigabit Ethernet applications. The PI3L301D has the lowest combination of both R-on and C-on in the LAN switch market, resulting in lowest return-loss which exceeds the requirement for the IEEE 802.3ab Gigabit PHY conformance tests spec.

Q08: What is Filtering and Forwarding of a Gigabit Switch?

faq_gigabit
When one packet comes in from any port of the switch, it will check the destination address besides the source address learning. The switch will look up the address table for the destination address. If not found, this packet will be forwarded to all the other ports except the port where the packet comes in.

Q07: What is Store and Forward of a Gigabit Switch?

faq_gigabit
Store-and-forward is one kind of packet-forwarding methodology. As a store-and-forward switch, it will store the complete packet in the internal buffer and do the complete error checking before transmitting to the network. Therefore, no error packets will disturb the network. It is the best choice when a network needs efficiency and stability.

Q01: What is Port mirror of a Gigabit Switch?

faq_gigabit
Port mirror is used to mirror traffic from source port to a target port for analysis. Only 2 ports can be monitored (mirrored) simultaneously to 1 sniffer port (target port). (Note that the target port must be in the same VLAN as the source port)

When I switch to KMTV, do I need to cancel my existing cable service?

KMTV - Frequently Asked Questions
All customers are responsible for disconnecting any existing television services with their current provider. We advise all of our new KMTV customers NOT to disconnect their current service until KMTV services are installed and operational.

Can I use my existing cable or DSL modem equipment?

EarthLink® High Speed - Frequently Asked Questions
In most cases, yes. If not, we'll provide equipment for you at no charge. EarthLink Wi-Fi, however, requires specific equipment. Costs may be associated with the necessary equipment.

Question: Where will 10 Gigabit Ethernet be used?

ADC KRONE - Singapore
Answer: 10 Gigabit Ethernet over UTP will find its first applications in data centres, medical facilities, ...

BACK TO TOP I am an existing EarthLink customer, how do I switch to EarthLink's Wi-Fi service?

EarthLink® High Speed - Frequently Asked Questions
You can call 1.877.WIFI.SALES (877.943.4725) and one of our friendly sales assistance representatives will be happy to assist you in making the transition. Please be advised that any early termination fees that might exist with your current service will still apply.

Q12: What is the twisted-pair cable for Gigabit Ethernet?

faq_gigabit
Category 5 cable is preferred to be using with twisted-pair Ethernet in structured wiring environments. This will ensure correct operation of all ports at 10Mbps, 100Mbps or 1000Mbps. Note that for Gigabit Ethernet, all 4 pairs of the twisted-pair cable are used for transmission and receiving signals.

Q09: What is the MAC address table of a Gigabit Switch?

faq_gigabit
The switch is implemented with a MAC address table, which is composed of many entries. Each entry is used to store the address information of network nodes on the network, including MAC address, port ID, etc. The information is the most important base to do packet filtering and forwarding. When one packet comes in from any port, the switch will learn the source address, port ID, and the other related information in address table. Therefore, the content of the MAC table will update dynamically.

Can a Gigabit Switch Router (GSR) OC-48 DPT card be downgraded to an OC-12?

Cisco - SRP and DPT Frequently Asked Questions
The Resource Availability Confirmation (RAC) Application-Specific Integrated Circuit (ASIC) for OC-12 is a version 1 Spatial Reuse Protocol (SRP) ASIC. The RAC ASIC for OC-48 is a version 2 SRP ASIC. There are a few small differences between version 1 and 2. Both run their own fixed ASIC clock rate. Both framers, for OC-12 and OC-48, run their own fixed framer clock rate. A framer supports one interface line rate. There are no issues if you mix SR and LR OC-48s with SRP in the same GSR.

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