发明申请
- 专利标题: Signaling Using a Time-to-Live (TTL) Field of a Packet
- 专利标题(中): 使用分组的生存时间(TTL)字段进行信令
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申请号: US13756490申请日: 2013-01-31
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公开(公告)号: US20140211794A1公开(公告)日: 2014-07-31
- 发明人: Daniel C. Frost , Stewart Frederick Bryant , Clarence Filsfils
- 申请人: Daniel C. Frost , Stewart Frederick Bryant , Clarence Filsfils
- 主分类号: H04L12/56
- IPC分类号: H04L12/56
摘要:
In one embodiment, a Time-to-Live (TTL) field of a packet is used to signal information (other than normal other than a life span of the packet or distance information relative to the network node). The packet is sent through a network, which typically includes traversing one or more intermediate nodes resulting in a modification of its TTL field (e.g., each node reduces the TTL value). After receiving the packet, a network node interprets the current value of the TTL field to identify the particular information encoded in the TTL field. Typically the current value of the TTL field is compared to a range of possible values to accommodate different TTL reductions due to different paths through a network. Signaling using the TTL value may be advantageous in networks that perform Equal-Cost-Multi-Path (ECMP) routing as the TTL value does not effect this routing.
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