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Cisco SN 5428-2 Storage Router Software Configuration Guide
OL-4691-01
Chapter 1 Before Configuring SN 5428-2 Storage Router Software
VLAN Access Overview
Basic Network Structure
When a storage router is deployed for SCSI routing or transparent SCSI routing and FCIP, IP hosts with
iSCSI drivers access the storage router through the IP network connected to the storage router’s Gigabit
Ethernet interfaces. The storage router accesses the storage devices or intelligent storage array connected
to the Fibre Channel interfaces. Access to the FC interfaces is made through the internal FC initiator
interface configured for iSCSI traffic.
The internal FC initiator interface configured for FCIP allows the FC hosts or FC devices to connect to
one or more Fibre Channel interfaces of the peer systems, which are connected to the IP network through
a Gigabit Ethernet interface. Through the IP network, each FCIP instance accesses its peer, thereby
connecting the SANs. Redundant network structures are also supported.
A management station manages the storage router through an IP network connected to the management
interface. A storage router deployed for SCSI routing and FCIP can also participate in a cluster to
provide HA operations for SCSI routing. When the storage router is deployed for transparent SCSI
routing and FCIP, the HA operations for SCSI routing are controlled in the intelligent storage array. and
the HA interface on the storage router is disabled.
VLAN Access Overview
SN 5428-2 VLAN access provides IP hosts with access to storage devices according to the VLAN to
which each host belongs.
Figure 1-21 shows a sample network that employs SN 5428-2 VLAN access. In the figure, an SN 5428-2
Gigabit Ethernet interface is connected to an IP network through an IEEE 802.1Q trunk; the SN 5428-2
Fibre Channel interfaces are connected to storage devices 1, 2, and 3. The SN 5428-2 is configured with
two SCSI routing instances named SR100 and SR200. The IP network contains two VLANs: VLAN 100
and VLAN 200. The SCSI routing instance, SR100, is configured to allow the hosts in VLAN 100 to
access storage devices 1 and 2. The SCSI routing instance, SR200, is configured to allow the hosts in
VLAN 200 to access storage device 3.