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TFTP
Determine the location of the Trivial File Transfer Protocol (TFTP) servers (as well
as the path and file name) to be used for the download configuration file, firmware
code file, upload configuration file, and log file.
v TFTP server software must be running for TFTP services to work.
v For the configuration file that is uploaded to a TFTP server to be saved correctly,
v Before the switch can upload its history log file to the TFTP server, an empty
Virtual LANs
Virtual LANs (VLANs) allow multiple blade servers to be part of a logical group and
prevent other servers that do not belong to a given group from gaining direct
access to the group resources and data. The BladeCenter Ethernet switches can
append a 4-byte VLAN tag to incoming frames on a per-port basis, and use the tag
on certain frames to permit or block access to those frames at other ports. VLAN
traffic can be restricted to a single BladeCenter T unit or can extend across multiple
BladeCenter T units. When VLANs are extended across multiple BladeCenter T
units, intermediate switches use the VLAN tag to block frames from nonmember
destinations.
When defining VLANs that span a chassis, consider the following points:
v Blade server ports that are in the same VLAN must have the same VLAN ID.
v Define the same VLAN ID on both Ethernet switches for blade servers that use
v Ethernet switch ports used to span multiple BladeCenter T units must be
v The external ports and Link Aggregation Groups (LAGs) must be members of all
v The intermediate network device that interconnects the BladeCenter T units must
The BladeCenter T unit default VLAN ID is 1 and includes all blade servers in the
chassis. If multiple VLANs are required, additional VLAN IDs must be configured.
Review the following example to understand how VLANs can be configured.
VLAN example
The example shown in Figure 44 on page 81 defines three VLANs within a single
BladeCenter T unit and multiple VLANs extended to multiple BladeCenter T units.
Table 23 on page 81 shows the defined VLAN parameters that are set to support
this configuration. Outgoing packets for internal blade server ports must be
untagged.
80
BladeCenter T Types 8720 and 8730: Planning and Installation Guide
– User. Read-only access to all switch module settings.
– User+. Read-only access to all switch settings, plus the ability to restart the
switch module.
you must first save switch module configurations to non-volatile random access
memory (NVRAM).
history log file must exist on the TFTP server.
both switches to connect to the same external network.
configured as Tagged, with a specific default VLAN ID for any untagged packets.
VLANs that span multiple BladeCenter T units.
be configured to handle tagged VLAN packets for all applicable VLAN traffic that
should be passed through the device.
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