Vlan Guidelines; Example Network Environment - HP StoreOnce 4900 Backup Installation And Configuration Manual

define 20 VLANs, each with its own subnet and, typically, use the 10GbE bonded link to the HP
StoreOnce Backup system as a trunk.
To do this, the network administrator sets up the switches with the necessary VLANs and identifies
20 tags. (The tag values can be any integer between range 2-4094.) The ports on the network
switch to which the StoreOnce Backup system connects must be trunked and tagged. Then using
the StoreOnce CLI, the HP StoreOnce administrator modifies the network configuration by first
defining the portset for the physical 10GbE link and making it VLAN enabled, and then configuring
each of the twenty VLAN subnets to use that portset.

VLAN guidelines

The following guidelines apply:
The user can configure up to a total of 128 different VLAN subnets on each StoreOnce Backup
system; the VLAN subnets may be consecutive or non-consecutive.
The user can configure up to 128 different VLAN subnets on one portset or divide the 128
different VLAN subnets over multiple portsets.
Each VLAN tag interface is configured using the VLAN ID index, which is the same as the
switch VLAN ID number and must be an integer from 2 to 4094.
Each VLAN tag interface can be part of one network subnet only and cannot be used more
than once.
For example, if a VLAN tag ID was configured for use with port eth 0 and eth1, it cannot also
be configured for use with any other portset.
The user can add/delete/modify the VLAN network configuration without interrupting
non-affected network configuration on the appliance.
VLAN tagging does not increase bandwidth because the bandwidth is bound by the physical
speed of the portset. The number of open streams is bound by the specification for the
StoreOnce appliance.
StoreOnce monitoring is on the physical portset, not on each VLAN subnet.
VLAN tagging is not a multi-tenancy solution. Once configured, all StoreOnce services can
bind / listen to all VLAN subnets. For example the NAS shares are available on all configured
subnets, and permissions are required to regulate access to shares.

Example network environment

In the following example three portsets are configured on the StoreOnce Backup system:
eth0 is the Quick Install connection that was created by connecting LAN port 1 at installation.
It uses DHCP and is not vLAN enabled. If required, it can be reconfigured with static IP
addresses.
eth2 and eth3 are used for the StoreOnce Catalyst Copy and Replication subnet and provide
the default gateway to the WAN. This portset is also not VLAN enabled and can, therefore,
support one subnet only.
eth4 and eth5 are used for Backup subnets. This portset is VLAN enabled and currently supports
two VLAN subnets. Further VLAN subnets may be configured on this subnet, as required.
eth1 is available to support a further portset. (Some HP StoreOnce Backups systems provide
four 10GbE ports, and eth6 and eth7 may also be configured to support further portsets.
However, these ports are not available on models described in this guide.)
NOTE: The availability and number of 10GbE ports depends upon the model of StoreOnce
Backup system.
VLAN subnets with HP StoreOnce Backup 43