Remote mirroring
View Patent ↗A method, system and computer readable medium for remote mirroring are described. The method can include receiving a customer data frame and making two copies of the customer data frame. An outer header, such as a mac-in-mac header, can be added to each copy. The outer header of the first copy can be configured for normal processing, while the outer header of the second copy can be configured for remote mirroring. A switch can recognize the header configured for mirroring in the second copy based on a service identifier in the header and process the second copy for mirroring on one or more ports on one or more bridges.
1. A method for remote mirroring of network data frames, the method comprising:
receiving a customer data frame at a first switch;
generating a first copy of the customer data frame and a second copy of the customer data frame;
adding a first header to the first copy and a second header to the second copy, each of the first header and the second header having a backbone component and a service encapsulation component, the backbone component having a backbone destination address and the service encapsulation component having a service identifier, wherein the service identifier includes an Individual Service Identifier (ISID);
receiving the second copy at a mirroring system; and
processing the second copy, at the mirroring system, based on a value of the service identifier in the second header.
2. The method of claim 1 , further comprising:
setting the service identifier of the first header to a first predetermined value, the first predetermined value being associated with normal processing of the customer data frame;
setting the backbone destination address of the first header to a destination address corresponding to a destination of the customer data frame;
setting the service identifier of the second copy to a second predetermined value, the second predetermined value being associated with remote mirroring;
setting the backbone destination address of the second header to a destination address of a bridge associated with remote mirroring; and
transmitting the first copy and the second copy according to their respective backbone destination addresses.
3. The method of claim 1 , wherein the first header and the second header are each a mac-in-mac header.
4. The method of claim 2 , wherein setting the backbone destination address of the second header includes specifying a hostname of a bridge associated with remote mirroring, when the backbone destination address is a unicast address.
5. The method of claim 2 , wherein setting the backbone destination address of the second header includes setting the backbone destination address of the second header to an auto generated multicast address based on the service identifier in the second header.
6. The method of claim 1 , wherein processing the second copy further comprises:
reading header information from the second copy, the header information including the service identifier;
determining that the service identifier indicates mirroring; and
providing the second copy to one or more ports on one or more bridges based on the service identifier.
7. The method of claim 6 , wherein transmitting includes using a core B-VLAN and associated traffic paths to carry the first copy and the second copy.
8. A system comprising:
a processor coupled to a computer readable medium, the computer readable medium having stored thereon software instructions that, when executed by the processor, cause the processor to perform a series of operations, the operations including:
receiving a customer data frame at a first switch;
generating a first copy of the customer data frame and a second copy of the customer data frame;
adding a first header to the first copy and a second header to the second copy, each of the first header and second header having a backbone component and a service encapsulation component, the backbone component having a backbone destination address and the service encapsulation component having a service identifier, wherein the service identifier includes an Individual Service Identifier (ISID);
receiving the second copy at a mirroring system; and
processing the second copy, at the mirroring system, based on a value of the service identifier in the second header.
9. The system of claim 8 , wherein the first header and the second header are each a mac-in-mac header.
10. The system of claim 8 , wherein the operations further comprise:
setting the service identifier of the first header to a first predetermined value, the first predetermined value being associated with normal processing of the customer data frame;
setting the backbone destination address of the first header to a destination address of the customer data frame;
setting the service identifier of the second copy to a second predetermined value, the second predetermined value being associated with remote mirroring;
setting the backbone destination address of the second header to a destination address of a bridge associated with remote mirroring; and
transmitting the first copy and the second copy according to their respective backbone destination addresses.
11. The system of claim 10 , wherein setting the backbone destination address of the second header includes setting a unicast destination address.
12. The system of claim 10 , wherein setting the backbone destination address of the second header includes setting a multicast destination address and transmitting the second copy includes using multicast trees built in a Shortest Path Bridging Mac-in-Mac (SPBm) network for mirroring the second copy to a plurality of receivers in the SPBm network.
13. The system of claim 8 , wherein processing the second copy further includes:
reading header information from the second copy, the header information including the service identifier;
determining that the service identifier indicates mirroring; and
providing the second copy to one or more ports on one or more bridges based on the service identifier.
14. The system of claim 10 , wherein the transmitting includes using equal cost multiple paths provided by an underlying SPBm network to carry the second copy.
15. A nontransitory computer readable medium having stored thereon software instructions that, when executed by a processor, cause the processor to perform a series of operations comprising:
receiving a customer data frame at a first switch;
generating a first copy of the customer data frame and a second copy of the customer data frame;
adding a first header to the first copy and a second header to the second copy, each of the first header and second header having a backbone component and a service encapsulation component, the backbone component having a backbone destination address and the service encapsulation component having a service identifier, wherein the service identifier includes an Individual Service Identifier (ISID);
receiving the second copy at a mirroring system; and
processing the second copy, at the mirroring system, based on a value of the service identifier in the second header.
16. The nontransitory computer readable medium of claim 15 , wherein the first header and the second header are each a mac-in-mac header.
17. The nontransitory computer readable medium of claim 15 , wherein the operations further include:
setting the service identifier of the first header to a first predetermined value, the first predetermined value being associated with normal processing of the customer data frame;
setting the backbone destination address of the first header to a destination address of the customer data frame;
setting the service identifier of the second copy to a second predetermined value, the second predetermined value being associated with remote mirroring;
setting the backbone destination address of the second header to a destination address of a bridge associated with remote mirroring; and
transmitting the first copy and the second copy according to their respective backbone destination addresses.
18. The nontransitory computer readable medium of claim 17 , wherein setting the backbone destination address of the second header includes setting a unicast destination address.
19. The nontransitory computer readable medium of claim 17 , wherein setting the backbone destination address of the second header includes setting a multicast destination address.
20. The nontransitory computer readable medium of claim 15 , wherein processing the second copy further comprises:
reading header information from the data frame, the header information including the service identifier;
determining that the service identifier indicates mirroring; and
providing the second copy to one or more ports on one or more bridges based on the service identifier, wherein the one or more ports are coupled to a network data analysis system.