Ethernet Portchannel-Based High Availability - Cisco MDS 9000 series Configuration Manual

Chapter 4 Configuring iSCSI
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
Figure 4-19
iqn.host-1
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.

Ethernet PortChannel-Based High Availability

All iSCSI data traffic for one iSCSI link is carried on one TCP connection. Consequently, the aggregated
Note
bandwidth is 1 Gbps for that iSCSI link.
Figure 4-20
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)
VRRP-Based iSCSI High Availability
Physical view (iSCSI)
IP
network
iSCSI
HBA
Logical view
IP
iSCSI
network
HBA
4-19, each iSCSI host discovers one iSCSI target for every physical Fibre Channel target.
provides a sample Ethernet PortChannel-based high availability iSCSI configuration.
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 Family NX-OS IP Services Configuration Guide
iSCSI High Availability
FC
FC fabric
pWWN-P1
FC
FC
4-65