| 摘要 |
In a telecommunications network, loops are eliminated by deactivation of ports of data forwarding systems (130). When a port becomes active, topology change notifications are sent, and forwarding databases (204, 220) may have to be flushed. In some embodiments, a port may become active faster, without flushing and without topology change notifications. Other features and embodiments are also provided. |
| 主权项 |
1. A method for operating an information handling system comprising a first forwarding system which is one of a plurality of forwarding systems interconnected by at least one link in a telecommunications network, each forwarding system comprising a plurality of ports for receiving and transmitting data, each forwarding system being operable to forward at least some data based on an address supplied with the data, the method comprising the first forwarding system performing operations of:
(1) storing management data, the management data comprising port data for a first port which is one of the ports of the first forwarding system, the port data indicating whether the first port has a first status, wherein the first status denotes a port connected to a link of a first type, wherein a link of the first type is a link which is connected to at least two forwarding systems but, even when each port which belongs to a forwarding system and is connected to the link is used for forwarding non-management data based on said address, the link does not provide a loop in data forwarding based on said address; (2) executing a management protocol for a set of one or more of the ports of the first forwarding system, the set comprising the first port, to determine whether any port in the set is to be unused for forwarding non-management data in order to eliminate or reduce loops in data forwarding based on said address, the non-management data comprising data not used for the management protocol; (3) wherein executing the management protocol comprises:
(3A) when the first port becomes enabled, checking the management data;(3B) if, in the checking, the management data satisfy one or more first conditions including the port data indicating that the first port has the first status, then performing a first procedure which includes configuring the first port as being used for forwarding the non-management data;(3C) if the management data satisfy one or more second conditions including the port data not indicating that the first port has the first status, then not configuring the first port as being used for forwarding the non-management data before performing a second procedure, wherein the second procedure comprises:
(3C-1) performing management communication on the first port, the management communication comprising sending and/or receiving management data on the first port;(3C-2) based on management communication, configuring the first port as being used or unused for forwarding the non-management data. |
