HP Cisco MDS 9020 - Fabric Switch Configuration Manual page 1111

Chapter 43 Configuring IP Services
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
Tip If you configure the static route IP forwarding and the default network details, these IPv4 addresses will
be used regardless of the default gateway being enabled or disabled. If these IPv4 addresses are
configured and not available, the switch will fall back to using the default gateway IPv4 address, if you
have configured it. Be sure to configure IPv4 addresses for all entries in the switch if you are using IPv4.
See the
for all entries in the switch.
When the Ethernet interface is configured, the switch should point to the gateway router for the IP
network. The host accesses the gateway using a gateway switch. This gateway switch is configured as
the default gateway. The other switches in the fabric that are connected to the same VSAN as the gateway
switch can also be connected through the gateway switch. Every interface connected to this VSAN
should be configured with the VSAN IPv4 address of the gateway switch (see
Figure 43-2
1.1.1.10
Switch A
Switch D
In Figure
C has the IPv4 address 1.12.11.3, and switch D has the IPv4 address 1.12.11.4. Switch A is the gateway
switch with the Ethernet connection. The NMS uses the IPv4 address 1.1.1.10 to connect to the gateway
switch. Frames forwarded to any switch in the overlaid VSAN 1 are routed through the gateway switch.
Configuring the gateway switch's IPv4 address (1.12.11.1) in the other switches enable the gateway
switch to forward the frame to the intended destination. Similarly, if a non-gateway switch in the VSAN
forwards a frame to the Ethernet world, the frame is routed through the gateway switch.
When forwarding is disabled (default), IP frames are not sent from one interface to another. In these
cases, the software performs local IP routing between two switches using the in-band option for Fibre
Channel traffic and the mgmt0 option for Ethernet traffic.
When a VSAN is created, a VSAN interface is not created automatically. You need to specifically create
the interface (see the
To configure default networks using IPv4 addresses, follow these steps:
Command
Step 1
switch# config t
OL-16184-01, Cisco MDS SAN-OS Release 3.x
"Initial Setup Routine" section on page 5-2
Overlay VSAN Functionality
NMS
Ethernet connection
1.12.11.1
VSAN 1
1.12.11.1
1.12.11.4
43-2, switch A has the IPv4 address 1.12.11.1, switch B has the IPv4 address 1.12.11.2, switch
"VSAN Interfaces" section on page
for more information on configuring the IP addresses
Switch B
1.12.11.2
1.12.11.1
Switch C
1.12.11.1
1.12.11.3
12-39).
Cisco MDS 9000 Family CLI Configuration Guide
IPv4 Default Network Configuration
Figure 43-2).
Purpose
Enters configuration mode.
43-5