Cisco 550X Series Stackable Managed Switches Offer…
Posted on Aug 12, 2016 by cozlink.com
Cisco 550X Series Stackable Managed Switches, as its name said: the Stackable Managed Switches, they’re built with true stacking capability to support up to eight units and 384 ports in a single stack.To get the fast data speeds, nonstop availability, and advanced security you need in your local-area network (LAN), you can turn to the Cisco 550X Series Stackable Managed Switches. These switches offer 16, 24, or 48 ports of 10 Gigabit Ethernet connections in both copper (10GBase-T) and fiber (SFP+) options, providing a solid foundation for your current business applications, as well as those you are planning for the future. At the same time, these switches are easy to deploy and manage, without a large IT staff.Yes, Cisco 550X Series switches are built on 10 Gigabit Ethernet connectivity, giving you the speed you need to share information quickly.These switches not only provide 10-Gbps connections for servers and storage devices, but also work as aggregation or core switches to provide ..
Cisco devices can only support Cisco brand optical module. While other brands optical modules absolutely can’t be supported. If you obstinately plug in the other optical modules into the Cisco port, information like “Unsupport” or “Unknown” will be displayed. The log shows one or several of the following circumstances:PM_SCP-SP-3-TRANSCEIVER_UNSUPPORTED: Unsupported transceiver in LAN portPHY-4-CHECK_SUM_FAILED： SFP EEPROM data check sum failed for SFP interface Gi1/0/25GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi1/0/25 has bad crcPM-4-ERR_DISABLE: GBIC-invalid error detected on Gi1/0/25, putting Gi1/0/25 in err-disable stateWhy does this happen?Cisco SFP security key mechanism prevents the use of non-Cisco SFP to ensure quality and compatibility. Each SFP is encoded using extraordinary software key. If a SFP module does not contain a valid key, then the port will be closed when the SFP inserted into Cisco switch. And the port will not send or receive any data packet...
Market Trends for Optical Interconnection Hardware in 2016
Posted on Aug 23, 2016 by cozlink.com
According to a report named “Optical Network Hardware Tracker” provided by IHS, a research company, the year of 2015 is a year of harvest to many vendors in optical communication industry. Driven by the whole industry, optical interconnection hardware market increased in 2015, although it has the most fierce competition. However, will this tendency be kept in 2016 for optical interconnection hardware market? Insight of 2016 optical interconnection market will be offered in this article.Where There Is Need There Is MarketIn the past year, the growth of optical interconnection is largely driven by the increasing needs for higher Ethernet speed. Behind these needs are the widespread of advanced technologies and applications like Cloud, Internet of Things and virtual data center. The wide deployment of FTTx and 4G network are also great drivers of optical interconnection market increasing. In 2016, the applications of the advanced technology and deployment of fiber optic network will obvio..
What 802.3 Standard Originally Defined Poe Functionality?
Posted on Aug 22, 2016 by cozlink.com
Definition:IEEE 802.3 is a working group and a collection of IEEE standards produced by the working group defining the physical layer and data link layer's media access control (MAC) of wired Ethernet. This is generally a local area network technology with some wide area network applications. Physical connections are made between nodes and/or infrastructure devices (hubs, switches, routers) by various types of copper or fiber cable. 802.3 is a technology that supports the IEEE 802.1 network architecture. What 802.3 Standard Originally Defined Poe Functionality When Was the Standard Enhanced Powering network devices can sometime present problems, especially if they are located remotely. One convenient solution is to supply the power over an Ethernet LAN cable. Power over Ethernet, is defined under two IEE standards, namely IEEE 802.3af and later IEE 802.3at which defined a number of enhancements.This Power over Ethernet, PoE is now being used for a wide variety of ap..