Line card --- warp and weft yarn are all strand yarn

 1. The line card type belongs to khaki Fabric. If the warp direction is thread and the weft direction is yarn, it is called half line card; If the warp and weft direction are thread, instead of yarn, it is called full line card. ban xian ka and quan xian ka twill the direction is right oblique. This is twill the biggest difference. All cotton thread cards and yarn cards are similar in style, all of which have the characteristics of uniform and smooth cloth surface, simple and soft, stable setting, moisture absorption and wear resistance, etc. Most of them are casual pants, especially after ironing-free treatment, they are soft and comfortable, the feature of no crease is more prominent, and it has become the preferred fabric for casual long shorts.

 2. The line card for a switch, router or a device interface between access lines of other network devices and access devices. Digital and analog line cards with multiple speeds can be used to connect cable or optical fiber line. Digital line cards mainly provide data packet forwarding, ping response, packet sharding and other functions for data networks. Line cards mainly focus on the following aspects:

 3. For example, first-in-first-out (FIFO) and MDRR(Modified defense Round Robin) congestion control, such as weighted random early detection ( WRED: Weighted Random Early Detection) other features, such as Access list (ACLs:Access Lists) and committed Access rate ( CAR: Committed Access Rate) and data flow statistics. Each digital data packet line card can be divided into three main parts:

 4. Physical Layer Interface Module-a hardware Module used to terminate Physical connections (related media, asynchronous transmission mode ATM, SONET  Packet <POS:Packet-over-SONET>, Ethernet) Switching Engine-the forwarding Engine is Switching Fabric the transmission process to the destination LC provides packets in advance. It is mainly responsible for processing data packet search, rewriting, Buffering, congestion control and other operations. Fabric Interface-Switching Interface ASIC (Sofia) provides packets in advance for the transmission process from Switching Fabric to LC on the destination. It is mainly responsible for switching authorization requests, switching queuing, multicast replication and other operations.