Installation manual

Adding an External Filer
Providing the Filer’s IP Address
6-2 CLI Storage-Management Guide
Providing the Filer’s IP Address
The next step in external-filer configuration is to give the IP address of the filer. The
address must be on the proxy-IP subnet (“Adding a Range of Proxy-IP Addresses” on
page 4-6 of the CLI Network-Management Guide) or reachable through a gateway on
that subnet (via static route: see “Adding a Static Route” on page 4-9 of the same
manual). Use the
ip address command to identify the external filer:
ip address ip-address
where ip-address is in dotted-decimal format (for example, 192.168.25.19).
For example, the following command sequence declares the external filer, “das1,” to
be the NAS filer at 192.168.25.19:
bstnA6k(gbl)# external-filer das1
bstnA6k(gbl-ext-filer[das1])# ip address 192.168.25.19
bstnA6k(gbl-ext-filer[das1])# ...
Providing a Secondary Address (UDP only)
Some filers are configured as redundant pairs that share a single virtual-IP address but
occasionally respond to UDP packets from their physical-IP addresses. That is, a
client (the ARX) sends a request to the virtual-IP address, and one of the filers
responds from its physical-IP address. The switch considers the virtual IP to be
primary, and the physical IPs to be secondary. To identify a secondary IP address, use
the
secondary flag in the ip address command:
ip address ip-address secondary
where ip-address is a secondary address for the filer.
This only applies to a filer that you will access through UDP; that is, with NFSv2 or
NFSv3/UDP. If you only plan to use CIFS and/or NFSv3/TCP, the secondary address
is unnecessary.
You can use this flag to configure up to four secondary IP addresses. For example, the
following command sequence configures an external filer, “nas1,” with one primary
address and two secondary addresses:
bstnA6k(gbl)# external-filer nas1
bstnA6k(gbl-ext-filer[nas1])# ip address 192.168.25.21