S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 42 Configuring iSCSI
iSCSI High Availability
Figure 42-19
VRRP-Based iSCSI High Availability
In
Figure 42-19
, each iSCSI host discovers one iSCSI target for every physical Fibre Channel target.
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.
Ethernet PortChannel-Based High Availability
Note
All iSCSI data traffic for one iSCSI link is carried on one TCP connection. Consequently, the aggregated
bandwidth is 1 Gbps for that iSCSI link.
Figure 42-20
provides a sample Ethernet PortChannel-based high availability iSCSI configuration.
IP
network
90862
VRRP across two ports
Physical view (iSCSI)
Virtual IP-10.1.1.1
FC fabric
pWWN-P1
iqn.host-1
iSCSI
HBA
FC
lqn.com.cisco.mds.vr1.gw.p1
FC
lqn.com.cisco.mds.vr1.gw.p1
FC
Virtual IP-10.1.1.1
Netw
or
k por
tal 10.1.1.1
iqn.host-1
iSCSI
HBA
IP
network
Logical view