HP Virtual Connect 1.10Gb-F Ethernet Module for c-Class BladeSystem - Manual (Page 48)

Installation 48
Because appropriate VLAN tags are added as the packets leave the enclosure, this type of uplink should
not be used in cases where VLAN tags are already added on the server itself. The system drops any
Ethernet packets with server-inserted VLAN tags that are received on networks connected to shared uplink
ports.
Mapping multiple networks to a shared uplink port set
It is also possible to map multiple VLAN-tagged networks to a set of shared uplink ports. The resulting
shared uplink port set allows for the minimum number of cables while still providing for link aggregation
and failover.
In the following example, a shared uplink port set is first defined to provide aggregation and failover.
Shared_Uplink_Set_A = {Enclosure1:Bay1:PortX2, Enclosure1:Bay2:PortX2}
Network Shared uplink port set and VLAN
Production_Network Shared_Uplink_Set_A:VLAN_15
Dev_Network Shared_Uplink_Set_A:VLAN_21
Backup_Network Shared_Uplink_Set_A:VLAN_32
iSCSI_Storage_Network Shared_Uplink_Set_A:VLAN_76
In this example, all of the defined networks share a single active uplink port (such as
Enclosure1:Bay1:PortX2) using VLAN tagging, while the second link in the shared uplink port set is
available for failover. The shared uplink port set can also be constructed of multiple 1-Gb external ports.
NOTE: One network can be designated as a native VLAN, causing all untagged incoming
Ethernet packets to be placed on this network. For additional information, see "Shared uplink
sets and VLAN tagging (on page 120 )."
To make Virtual Connect Manager aware of shared network connections, see "Define New Shared
Uplink Set (" Define New Shared Uplink Set screen " on page 121 )."
Configuration example using a Cisco Core switch
There are several ways to implement a redundant Virtual Connect configuration. This example acts as a
reference for anyone who is not familiar with switch configurations. This example is just one of several
ways to connect an HP Virtual Connect to a Cisco Core switch.
Connecting Virtual Connect to a Cisco Core/distribution switch using a shared uplink set and VLAN
tagging done at the VC/data center boundary