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Mechanisms for solving an IP fragmentation overlapping issue in L2VPN using multiple IP addresses in GRE headers
Mechanisms for solving an IP fragmentation overlapping issue in L2VPN using multiple IP addresses in GRE headers
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机译:使用GRE标头中的多个IP地址解决L2VPN中IP碎片重叠问题的机制
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摘要
In an embodiment, a computer-implemented method for using multiple IP addresses in GRE IP headers to prevent IPID fragmentation overlapping in L2VPN networks is disclosed. In an embodiment, the method comprises: receiving, by an edge service gateway, a packet that requires fragmentating; determining whether the gateway is configured to prevent IPID fragmentation overlapping; and in response to determining that the gateway is configured to prevent IPID fragmentation overlapping, creating a plurality of packet fragments of the packet. A packet fragment comprises a GRE IP header, additional headers, and a portion of the packet. The GRE IP header stores an IPID generated for the packet in an IPID field, a source private IP address in a source IP address field, and a destination private IP address in a destination IP address field. The source private IP address, the destination private IP address and the IPID collectively form a packet identifier of the packet.
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机译:在一个实施例中,公开了一种用于在GRE IP报头中使用多个IP地址以防止L2VPN网络中的IPID分段重叠的计算机实现的方法。在一个实施例中,该方法包括:边缘服务网关接收需要分段的分组;确定网关是否配置为防止IPID分片重叠;响应于确定网关被配置为防止IPID分段重叠,创建该分组的多个分组分段。数据包片段包括GRE IP报头,其他报头和数据包的一部分。 GRE IP标头将为数据包生成的IPID存储在IPID字段中,将源专用IP地址存储在源IP地址字段中,并将目标专用IP地址存储在目标IP地址字段中。源专用IP地址,目的专用IP地址和IPID共同形成分组的分组标识符。
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