Ethernet Portchannel-Based High Availability - Cisco DS-C9216I-K9 Configuration Manual

Chapter 24 Configuring IP Storage
Figure 24-30
iSCSI
iqn.host-1
iSCSI
iqn.host-1
In Figure
When the Gigabit Ethernet interface of the VRRP master fails, the iSCSI session is terminated. The host
then reconnects to the target and the session comes up because the second Gigabit Ethernet interface has
taken over the virtual IP address as the new master.
Ports that act as VRRP master and backup can be on different switches. If you have a static WWN
Tip
configuration for iSCSI initiators, configure a different WWN for the iSCSI initiator for each switch. If
you use a proxy-initiator, be sure to configure a different pWWN on each iSCSI interface for each VRRP
port used.

Ethernet PortChannel-Based High Availability

All iSCSI data traffic for one iSCSI link is carried on one TCP connection. Consequently, the aggregated
bandwidth will be one Gbps for that iSCSI link.
OL-7753-01
VRRP-Based iSCSI High Availability
Physical view (iSCSI)
IP
network
HBA
Logical view
IP
network
HBA
24-30, each iSCSI host discovers one iSCSI target for every physical Fibre Channel target.
VRRP across two ports
Virtual IP-10.1.1.1
Virtual IP-10.1.1.1
lqn.com.cisco.mds.vr1.gw.p1
lqn.com.cisco.mds.vr1.gw.p1
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
Configuring iSCSI
FC
FC fabric
pWWN-P1
FC
FC
24-41