Method of generating a monitoring datagram

A technology for monitoring data and data, which is applied in the field of monitoring datagrams, and can solve problems such as inability to modify packets

Active Publication Date: 2010-08-25
VIAVISOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, this hybrid technique is actually more problematic than other solutions when the monitoring point is downstream from the location where the packet is generated
Passive probes obviously cannot modify packets as they pass through the probe, and adding extension headers to user packets as they pass through routers may have some undesired divergence

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  • Method of generating a monitoring datagram
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  • Method of generating a monitoring datagram

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Embodiment Construction

[0048] Throughout the description below, the same reference numerals are used to designate similar parts.

[0049] Referring to FIG. 1, a communication network (e.g., the Internet (not shown)) may include many smaller networks, such as a multiprotocol label switching (MPLS) network 100, which can support, for example, a virtual private network (VPN), VPN and service level Protocol associated with specifying acceptable datagram or packet loss rates.

[0050] MPLS network 100 supports Label Switched Path (LSP) routing, and network 100 includes multiple routers 102 to route packets between ingress routers 104 and egress routers 106 . The ingress router 104 is capable of communicating with an ingress terminal 108, such as a suitably programmed first personal computer (PC), and the egress router 106 is capable of communicating with an egress terminal 110, such as a suitably programmed second PC .

[0051] Referring to FIG. 2, each router 200 in the plurality of routers 102 and in...

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Abstract

In packet switched communications systems, a number of techniques exist for measuring packet loss, but each of these has respective disadvantages, each of varying degree. Consequently, the present invention provides a method of generating a test packet for measuring packet loss, where an initial packet is encapsulated with a first shim header (300), the encapsulated initial packet being encapsulated with a second shim header (306). The first shim header (300) has a label (308), the label (308) being indicative of a monitoring status of the test packet and used to identify the monitoring status of the packet as the test packet traverses a Label Switched Path of a Multi-Protocol Label Switched network. An advantage of using this technique is that the trailers of the test packet can be easily forwarded to an Internet Protocol (IP) address of a monitoring station, when the initial packet is an IP packet.

Description

technical field [0001] The present invention relates to a monitoring datagram of the type that is generated, for example, to obtain data from a router in a network (eg, a multiprotocol label switching network). The invention also relates to a method and a device for processing monitoring datagrams. Background technique [0002] In the field of packet-switched communications, there is an increasing tendency to transmit delay-intolerant data over networks. The increasing use of real-time applications such as high-quality video and audio and voice over IP traffic has resulted in the need to accelerate network traffic flows to meet the quality of service (QoS) standards required by these applications. [0003] Multiprotocol Label Switching (MPLS) is a standardized technology designed to increase the speed of traffic flow in a network while making the network easier to manage. MPLS networks are deployed within other networks. [0004] In MPLS, a packet (such as an Internet Pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L45/50
CPCH04L41/0213H04L43/026H04L45/00H04L45/502H04L43/00
Inventor 凯文·米切尔
Owner VIAVISOLUTIONS INC
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