Method for handling fault between an egress label switching router and a data device connected therewith
AssigneeHuawei Technologies Co., Ltd.
InventorJian Wu
Life of this patent
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Abstract
Disclosed is a method for handling fault between an Egress LSR and an Egress data device connected with it, including the following steps: an Egress Label Switching Router (LSR) transmitting fault information to an Ingress LSR after detecting a fault of an Egress Work link connected with it; the Ingress LSR adjusting a service flow transmission according to the received fault information. When there exists an Egress Protect link in the network, the present invention can transmit the service flow through the Egress Protect link, thus it is guaranteed that the service flow can be transmitted to the Egress data device; and the service flow is not transmitted when there is no Egress Protect link in the network, thus the waste of network resources is avoided.
Claims17
A method for handling a fault between an Egress Label Switching Router (LSR) and a data device connected with the Egress LSR, comprising:
- binding, by the Egress LSR, an Egress Work link between the Egress LSR and the data device connected with the Egress LSR and a Work Label Switching Path (LSP) between an Ingress LSR and the Egress LSR into one link;
- transmitting, by the Egress LSR, fault information to the ingress LSR after detecting a fault of the Egress Work link between the Egress LSR and the data device connected with the Egress LSR;
- and
- adjusting, by the Ingress LSR, a service flow transmission from the Ingress LSR to the data device according to the received fault information,
- wherein an Egress Protect link is existent between the Egress LSR and the Egress data device connected with the Egress LSR,
- wherein adjusting the service flow transmission by the Ingress LSR comprises,
- the Ingress LSR transmitting the service flow to the Egress LSR, and
- the Egress LSR transmitting the service flow to the data device through the Egress Protect link,
- wherein a Protect LSP is existent between the Ingress LSR and the Egress LSR, and
- wherein for transmitting the service flow to the Egress LSR by the Ingress LSR, the service flow is transmitted to the Egress LSR through the Protect LSP.
A system for handling a fault between an Egress Label Switching Router (LSR) and a data device connected with the Egress LSR comprising:
- the data device connected with the Egress LSR in an egress direction through an Egress Work link;
- the Egress LSR configured to bind the Egress Work link and a Work LSP between an Ingress LSR and the Egress LSR into one link, transmit fault information to the Ingress LSR after detecting a fault of the Egress Work link, wherein the fault information is transmitted in a Backward Defect Indication (BDI) packet;
- the Ingress LSR configured to adjust a service flow transmission from the ingress LSR to the data device according to the fault information received from the Egress LSR;
- the Ingress LSR is further configured to transmit the service flow to the Egress LSR through a Protect LSP between the Ingress LSR and the Egress LSR;
- the Egress LSR is further configured to transmit the service flow to the data device through an Egress Protect link between the Egress LSR and the data device;
- a Protect Egress LSR connected with the data device through the Egress Protect link and connected with the Ingress LSR through the Protect LSP, the Protect Egress LSR configured to transmit the service flow to the data device through the Egress Protect link;
- and
- the Ingress LSR is further configured to transmit the service flow to the Protect Egress LSR through the Protect LSP after receiving the fault information.
An Egress Label Switching Router (LSR) apparatus for handling a fault between the Egress LSR apparatus and a data device connected with the Egress LSR in an egress direction, configured to implement a method comprising:
- binding an Egress Work link between the Egress LSR apparatus and the data device connected with the Egress LSR apparatus and a Work Label Switching Path (LSP) between an Ingress LSR and the Egress LSR apparatus into one link;
- transmitting fault information to the Ingress LSR after detecting a fault of the Egress Work link between the Egress LSR apparatus and the data device connected with the Egress LSR apparatus, wherein the Egress LSR apparatus is configured to transmit a service flow to the data device through an Egress Protect link between the Egress LSR apparatus and the data device;
- and
- a Protect Egress LSR connected with the data device through an Egress Protect link, and configured for connecting to an Ingress LSR through a Protect LSP, wherein the Protect Egress LSR configured to transmit the service flow to the data device through the Egress Protect link.
Dependencies are inferred from the claim text.