| 摘要 |
Data mirroring in a service such as a virtual private LAN service is disclosed. Data packets, segments, frames, or other forms of encapsulation may be mirrored off of a core network (e.g., IP, TCP) to one or more mirroring destinations without using a parallel network. Encapsulation techniques are provided that enable packets to be mirrored and transmitted across services such as VPLS, MPLS, and others to a mirror destination. Once received at the mirror destination, mirrored packets may be used for troubleshooting in a more efficient and less resource and time-consuming manner. |
| 主权项 |
1. A method for packet mirroring, comprising:
selecting a packet to mirror from a plurality of packets received at a node based on a mirroring criterion, the selected packet being associated with a service provided through a network; selecting one of a plurality of mirror points of the node based on the mirroring criterion, each of the mirror points being within a transport path for the service; preparing a mirrored packet of the selected packet at the selected mirror point; sending the mirrored packet to a mirror destination from the selected mirror point using a mirror service provided through the network at least via a transport tunnel; and fulfilling a quality of service guarantee for the service provided through the network and associated with the selected packet to mirror at least in part by truncating the selected packet prior to sending it via the mirror service, wherein the selected packet is an Internet Protocol packet, truncating the selected packet includes alleviating packet mirroring induced increased network congestion interfering with a fulfilment of the quality of service guarantee by truncating content included in the Internet Protocol packet as being oversized to fulfill the quality of service guarantee for the service provided through the network and associated with the selected packet to mirror, and truncating the selected packet includes truncating the Internet Protocol packet that has been received at the node; wherein fulfilling the quality of service guarantee includes limiting a rate at which mirrored packets are sent via the mirror service and limiting the rate includes dynamically adjusting a rate limit based on the fulfilment of the quality of service guarantee interfered by packet mirroring; and wherein selecting the selected packet further includes identifying the selected packet based on one or more of the following: a user-specified criterion, a system-specified criterion, a set of criteria, port information, a delimiter, a protocol, a label, a service or other tag, a list, an address, an option value, and a protocol command. |
