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52-8
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 52 Configuring IP Storage
Configuring Gigabit Ethernet High Availability
–
The established, precedence, and fragments options are ignored when you apply IPv4-ACLs
(containing these options) to Gigabit Ethernet interfaces.
–
If an IPv4-ACL rule applies to a preexisting TCP connection, that rule is ignored. For example
if there is an existing TCP connection between A and B, and an IPv4-ACL specifies dropping
all packets whose source is A and destination is B is subsequently applied, it will have no effect.
Configuring Gigabit Ethernet High Availability
Virtual Router Redundancy Protocol (VRRP) and Ethernet PortChannels are two Gigabit Ethernet
features that provide high availability for iSCSI and FCIP services.
VRRP for iSCSI and FCIP Services
VRRP provides a redundant alternate path to the Gigabit Ethernet port for iSCSI and FCIP services.
VRRP provides IP address failover protection to an alternate Gigabit Ethernet interface so the IP address
is always available (see Figure 52-4).
Figure 52-4 VRRP Scenario
In Figure 52-4, all members of the VRRP group must be IP storage Gigabit Ethernet ports. VRRP group
members can be one or more of the following interfaces:
• One or more interfaces in the same IPS module or MPS-14/2 module
• Interfaces across IPS modules or MPS-14/2 modules in one switch
• Interfaces across IPS modules or MPS-14/2 modules in different switches
• Gigabit Ethernet subinterfaces
• Ethernet PortChannels and PortChannel subinterfaces
See the “Virtual Router Redundancy Protocol” section on page 51-8.
90855
Switch 1
VRRP group
virtual IP 10.1.1.100
L2 switch
Connect to
10.1.1.100
Switch 2
10.1.1.10
VRRP master
IPS module
IPS module
10.1.1.30
VRRP backup
IP network
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