[Question] About Multi-homing in LKSCTP

[Question] About Multi-homing in LKSCTP

[Thanh Nguyen]

In LKSCTP with multi-homing, if association using 4 IP(list Ip1 Ip2 Ip3
IP4 and bandwith,delay different) and peer have 3 IP (IP5 Ip 6 Ip7 ).
When establish association, primary path is IP1-IP5, if path IP1-IP5
die, how is SCTP choose new path? (select by best bandwith and delay or
list IP).
And in RFC have sentence "Furthermore, when its peer is multi-homed, an
endpoint SHOULD try to retransmit a chunk that timed out to an active
destination transport address that is different from the last
destination address to which the DATA chunk was sent." in section 6.4
In LKSCTP use this feature or not? If not, which do LKSCTP use?

[Question] About Multi-homing in LKSCTP

[Thanh Nguyen]

In LKSCTP with multi-homing, if association using 4 IP(list Ip1 Ip2 Ip3
IP4 and bandwith,delay different) and peer have 3 IP (IP5 Ip 6 Ip7 ).
When establish association, primary path is IP1-IP5, if path IP1-IP5
die, how is SCTP choose new path? (select by best bandwith and delay or
list IP).
And in RFC have sentence "Furthermore, when its peer is multi-homed, an
endpoint SHOULD try to retransmit a chunk that timed out to an active
destination transport address that is different from the last
destination address to which the DATA chunk was sent." in section 6.4
In LKSCTP use this feature or not? If not, which do LKSCTP use?

Re: [Question] About Multi-homing in LKSCTP

[Wei Yongjun]

> In LKSCTP with multi-homing, if association using 4 IP(list Ip1 Ip2 Ip3
> IP4 and bandwith,delay different) and peer have 3 IP (IP5 Ip 6 Ip7 ).
> When establish association, primary path is IP1-IP5, if path IP1-IP5
> die, how is SCTP choose new path? (select by best bandwith and delay or
> list IP).

select by list IPs.

the side which have4 IP will try to select transport to IP6 or IP7 to resend data
if they are active. and the peer with have 3 IP will try to select transport to IP2,
Ip3, Ip4 to resend data.

> And in RFC have sentence "Furthermore, when its peer is multi-homed, an
> endpoint SHOULD try to retransmit a chunk that timed out to an active
> destination transport address that is different from the last
> destination address to which the DATA chunk was sent." in section 6.4
> In LKSCTP use this feature or not? If not, which do LKSCTP use?

LKSCTP using this feature.

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