HP 1.10GB Virtual Connect Ethernet Module for c-Class BladeSystem User Manual
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Server management 125
With this 'forced' option selected, the server connection VLAN mappings are linked to the chosen shared
uplink set. Any change to the uplink VLAN mappings is reflected automatically on the server connection using
those shared uplink set VLAN mappings. Therefore, to minimize network outage time, any VLAN mapping
changes to the uplinks requires immediate changes being made to the VLAN tagging on the servers.
No Forced VLAN Mappings
If the 'Force same VLAN mappings as Shared Uplink Sets' option is not selected, users can choose available
networks and assign a unique server VLAN associated with the network for this server port. Not forcing VLAN
mappings provides greater flexibility in selecting the set of networks to connect to each server port, and
enables administrators to specify server VLAN mappings independent of those assigned by the network
administrator for the shared uplink sets. The untagged option is always available, but it might be unassigned,
that is, any untagged frame from the server is dropped. Each network can be selected only once per server
port. Similarly, each server-assigned VLAN must be unique per server port.
This option is not available if the domain-wide 'Force server connections to use the same VLAN mappings as
shared uplink sets' checkbox on the Advanced Settings tab of the Ethernet Settings screen is selected.
If the selected network is part of a shared uplink set, it has an associated external VLAN mapping. This
external VLAN is used to pre-populate the server-assigned VLAN entry to maintain consistency throughout the
VC domain. However, multiple networks on different shared uplink sets can have the same external VLAN
mapping. If those networks are selected for the same server port, the user must edit the server VLAN to ensure
all VLANs are unique for each server port.