公开(公告)号：AT540507T

公开(公告)日：2012-01-15

申请号：AT04800320

申请日：2004-11-12

Applicant: ERICSSON TELEFON AB L M

Inventor： CS SZ R ANDRAS ,  TAK CS ATTILA ,  B DER ATTILA ,  SZABO ROBERT ,  WESTBERG LARS

IPC: H04L12/56

Abstract: A system and a method are described herein which provide for congestion handling in a packet switched network domain. In case of congestion overload is measured by a core node, the data packets in proportion to the overload are marked and the signaled overload is stored. At least one egress node receives marked and not marked packets, decodes and counts the overload from the marked packets in a counting interval. Congestion report messages are sent to ingress nodes where flows are terminated.

公开(公告)号：AT523992T

公开(公告)日：2011-09-15

申请号：AT06829968

申请日：2006-11-09

Applicant: ERICSSON TELEFON AB L M

Inventor： PINTER FERENC ,  B DER ATTILA ,  CS SZ R ANDRAS ,  TAK CS ATTILA

IPC: H04L12/54

Abstract: Reducing congestion in an IP domain wherein congested data flows arriving at an egress edge node of the network are identified. Total congestion represented by the congested flows is determined, and a congestion extent notification is sent from the egress edge node to its ingress edge node peer. The congestion extent notification includes information regarding the total congestion and is sent on a per-class basis. Congested core routers in the network insert DSCPs into data packets passing through them to enable the egress edge nodes to identify the affected flows. The core routers may also send congestion metric messages, designed to follow the same path as the marked packets, to inform the egress edge nodes of the extent of congestion. In an alternative method, the egress edge nodes inform their ingress peers that congestion is present, without initially identifying the extent. The ingress edge node sends a query downstream with a congestion metric.