Segment routing extension headers
First Claim
Patent Images
1. A method comprising:
- receiving a packet, wherein the packet comprises an internet protocol (IP) header, which comprises a destination IP address field;
adding a first extension header to the packet, wherein the first extension header comprises a list of elements, wherein each of the elements comprises a respective segment identifier (SID);
updating the packet, wherein the updating comprises writing information to the destination IP address field of the IP header, and the information comprises one of the SIDs of the list.
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Abstract
A system and method are disclosed for using segment routing (SR) in native IP networks. The method involves receiving a packet. The packet is an IP packet and includes an IP header. The method also involves updating the packet. Updating the packet involves writing information, including a segment routing segment identifier, to the destination address of the packet.
204 Citations
15 Claims
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1. A method comprising:
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receiving a packet, wherein the packet comprises an internet protocol (IP) header, which comprises a destination IP address field; adding a first extension header to the packet, wherein the first extension header comprises a list of elements, wherein each of the elements comprises a respective segment identifier (SID); updating the packet, wherein the updating comprises writing information to the destination IP address field of the IP header, and the information comprises one of the SIDs of the list. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system comprising:
a first node configured to receive a packet, wherein the packet comprises an internet protocol (IP) header, which comprises a destination IP address field; add a first extension header to the packet, wherein the first extension header comprises a list of elements, wherein each of the elements comprises a respective segment identifier (SID); update the packet, wherein updating the packet comprises writing information to the destination IP address field of the IP header, and the information comprises one of the SIDs of the list. - View Dependent Claims (8, 9, 10, 11)
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12. A non-transitory computer readable medium comprising executable instructions, wherein a method is implemented in response to executing the instructions, the method comprising:
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receiving a packet, wherein the packet comprises an internet protocol (IP) header, which comprises a destination IP address field; add a first extension header to the packet, wherein the first extension header comprises a list of elements, wherein each of the elements comprises a respective segment identifier (SID); updating the packet, wherein the updating comprises writing information to the destination IP address field of the IP header, and the information comprises one of the SIDs of the list. - View Dependent Claims (13, 14, 15)
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Specification