H3C Technologies H3C S5830V2 Series Switches User Manual
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9
Figure 9 FIP operation
As shown in
, the following workflow is used to set up a virtual link:
1.
The ENode sends a Discovery Solicitation containing its FCoE MAC address.
2.
After receiving the Discovery Solicitation, the FCF switch acts differently depending on whether the
receiving VFC interface is bound to an FCoE MAC address:
{
If it is not bound to an FCoE MAC address, the switch learns the FCoE MAC address and replies
with a solicited Discovery Advertisement, whose fcf priority field carries the FCF priority of the
VFC interface.
{
If it is bound to an FCoE MAC address, the switch identifies whether the FCoE MAC address in
the Discovery Solicitation matches the bound FCoE MAC address:
•
If they match, the switch replies with a solicited Discovery Advertisement, whose fcf priority field
carries the FCF priority of the VFC interface.
−
If they do not match, the switch discards the Discovery Solicitation.
3.
The FCF switch periodically sends unsolicited Discovery Advertisements, whose fcf priority field
carries the FCF priority of the system.
The sending interval is specified by using the fcoe fka-adv-period command and defaults to 8
seconds.
4.
After receiving the Discovery Advertisements, the ENode determines the FCF switch with the
highest priority according to the fcf priority field and sends a FLOGI request to that switch for
login.
5.
After receiving the FLOGI request, the FCF switch identifies whether the source MAC address
matches its learned or bound FCoE MAC address.
{
If they match, the FCF switch sends a FLOGI LS_ACC, which indicates the setup of the virtual
link.
{
If they do not match, the FCF switch discards the FLOGI request.
6.
The FCF switch also periodically sends unsolicited Discovery Advertisements to maintain
established virtual links. If the ENode fails to receive an unsolicited Discovery Advertisement within
(1) Send Discovery Solicitation
Learn FCoE MAC address
FCF
ENode
(2) Send solicited Discovery
Advertisement
(3) Send solicited Discovery
Advertisements periodically
(4) Send FLOGI request
Check FCoE MAC address
(5) Send FLOGI LS_ACC
(6) Send solicited Discovery
Advertisements periodically