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Trace The Security And/Or Lossless Component In Data Center Lossless Ethernet Network Using CFM (IEEE802.1ag)

IP.com Disclosure Number: IPCOM000240453D
Publication Date: 2015-Jan-30
Document File: 3 page(s) / 79K

Publishing Venue

The IP.com Prior Art Database

Related People

VEERARAGHAVAN, Muthu Krishnan; CHARYA, Sudhindra: INVENTOR

Abstract

As per the 802.1ag standard, optional TLV’s are carried as part of IEEE 802.1ag packet. Basically LTM/LTR packets are meant to trace the path from source end point to destination end point. The idea is to enhance LTM/LTR packet to carry additional TLVs for a specified priority and VLAN, and to check for loss-less and/or security or not.

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Data Centre Ethernet Networks have been enhanced to provide lossless and secure paths to carry Fibre Channel traffic with appropriate configuration for loss-less and secure Ethernet such as priority flow control, quantized congestion notification, enhanced transmission selection, FIP snooping and NPIV Proxy. Native Fibre Channel Networks were point-to-point; with the introduction of loss-less Ethernet, multiple switches could be in the path of the traffic and each switch could potentially cater to multiple e-nodes and servers. In such a network, it is difficult for the administrator to verify if a path from an e-node to server and vice-versa is completely loss-less or not.

As per the 802.1ag standard, optional TLV’s are carried as part of IEEE 802.1ag packet.  Basically LTM/LTR packets are meant to trace the path from source end point to destination end point. The idea is to enhance LTM/LTR packet to carry additional TLVs for a specified priority and VLAN, and to check for loss-less and/or security or not. The intermediate switches need to trap LTM packet and parse these TLVs and check if the specified VLAN and priority are configured for loss-less from databases maintained for PFC , ETS, QCN etc. for the ingress  and egress ports or not. Along with the Loss-Less component, each intermediate DUT will parse the TLV to check if any secure component is requested, and if so query from FIP Snooping, NPIV proxy databases etc for ingress and egress ports. This loss-less and/or secure information for ingress egress ports will be replied back as part of additional TLV in the LTR packet. This process continues till LTM reaches the destination end point. Onc...