Fiber Optic Wiki

Installing and removing MPLS paths

August 9, 2011

There are two standardized protocols for managing MPLS paths: LDP (Label Distribution Protocol) and RSVP-TE, an extension of the Resource Reservation Protocol (RSVP) for traffic engineering. Furthermore, there exist extensions of the BGP protocol that can be used to manage an MPLS path.

PCI Express

August 9, 2011

PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe, is a computer expansion card standard designed to replace the older PCI, PCI-X, and AGP bus standards. PCIe has numerous improvements over the aforementioned bus standards, including higher maximum system bus throughput, lower I/O pin count and smaller physical footprint, better performance-scaling for bus devices, a more detailed error detection and reporting mechanism, and native hot plug functionality. More recent revisions of the PCIe standard support hardware I/O virtualization.

Architecture of PCI Express

August 9, 2011

Conceptually, the PCIe bus can be thought of as a high-speed serial replacement of the older PCI/PCI-X bus, an interconnect bus using shared address/data lines.

Interconnect of PCI Express

August 9, 2011

PCIe devices communicate via a logical connection called an interconnect or link. A link is a point-to-point communication channel between 2 PCIe ports, allowing both to send/receive ordinary PCI-requests (configuration read/write, I/O read/write, memory read/write) and interrupts (INTx, MSI, MSI-X).

Competitors to MPLSMPLS

August 8, 2011

Competitors to MPLSMPLS can exist in both an IPv4 environment (using IPv4 routing protocols) and an IPv6 environment (using IPv6 routing protocols). The major goal of MPLS development was the increase of routing speed. This goal is no longer relevant because of the usage of newer switching methods, such as ASIC, TCAM and CAM-based switching. Now, therefore, the main application of MPLS is to implement limited traffic engineering and Layer 3/Layer 2 “service provider type” VPNs over IPv4 networks.

MPLS deployment

August 8, 2011

MPLS deploymentMPLS is currently in use in IP-only networks and is standardized by the IETF in RFC 3031. It is deployed to connect as few as two facilities to very large deployments. For example, in the retail sector, it is not uncommon to see deployments of 2000 to 5000 locations to communicate transaction data to a headquarters data center.

|< < .... 129 130 131 132 133 134 135 136 137 138 139 .... > >|

Showing 799 to 804 of 1106 (185 Pages)