I have a question about sctp transport address and enpoint .
"cheng yan" <[email protected]>
| Newsgroups | gmane.ietf.sigtran |
|---|---|
| Message-ID | <[email protected]> |
Dear everyone,I have a question about the concept of "endpoint","tranport address" in the rfc2960. Follow is the summary of "transport address,endpoit,association" in the rfc2960. sctp transport address :one ip address + sctp port,sctp endpoint: (ipset) + port association: local endpoint + remote endpoint(ipset is consiste of one or more ip adress) But in the definition of endpoint ,there is a description like this: "A transportaddress used by an SCTP endpoint must not be used by another SCTPendpoint." Is this means the follow configuration is not conform to the rfc2960? A (client) B(server)associ1 :ip1 + port1 --------ipa + port3associ2 :ip1 + port2 --------ipa + port3 But in fact, the local ips,local port,peer ips,peer port can unique identify a association. Follow description is get from the rfc2960. o SCTP endpoint: The logical sender/receiver of SCTP packets. On a multi-homed host, an SCTP endpoint is represented to its peers as a combination of a set of eligible destination transport addresses to which SCTP packets can be sent and a set of eligible source transport addresses from which SCTP packets can be received. All transport addresses used by an SCTP endpoint must use the same port number, but can use multiple IP addresses. A transport address used by an SCTP endpoint must not be used by another SCTP endpoint. In other words, a transport address is unique to an SCTP endpoint. o SCTP association: A protocol relationship between SCTP endpoints, composed of the two SCTP endpoints and protocol state information including Verification Tags and the currently active set of Transmission Sequence Numbers (TSNs), etc. An association can be uniquely identified by the transport addresses used by the endpoints in the association. Two SCTP endpoints MUST NOT have more than one SCTP association between them at any given time. o Transport address: A Transport Address is traditionally defined by Network Layer address, Transport Layer protocol and Transport Layer port number. In the case of SCTP running over IP, a transport address is defined by the combination of an IP address and an SCTP port number (where SCTP is the Transport protocol). _________________________________________________________________ Climb to the top of the charts! Play the word scramble challenge with star power. http://club.live.com/star_shuffle.aspx?icid=starshuffle_wlmailtextlink_jan _______________________________________________ Sigtran mailing list [email protected] https://www.ietf.org/mailman/listinfo/sigtran