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Features of the IBP Module Introduction
Intelligent Blade Panel Module
15
Uplink Set Support
Uplink Sets are used to define the external connection. An “Uplink Set” is defined as a set of 1
to n external (uplink) ports, which is used in port group definitions to connect a group of server
blades to the customer’s LAN. All members of a Uplink Set will form a LAG.
Port Group Support
Port Group feature is supported on IBP. Port Groups combine several internal ports into a
group. Up to 30 groups are available for IBP. Each Port Group could be combined with a uplink
set to be as its external connection. Packets only are forwarding within the same group.
VLAN Port Group Support
VLAN Port Group feature is used to define groups on VLAN basis, which are sharing the same
Uplink Set. Up to 30 groups are available for IBP. Packets received on internal ports should be
untagged packets, and the packets egress on uplink port should be tagged with the VLAN Port
Group’s VLAN IDs.
Within the set of VLAN Port Groups sharing the same Uplink Set one VLAN can optionally be
defined as “native VLAN”. This changes the tagging behavior at the uplink port for this native
VLAN ID. Incoming untagged packets tagged with the native VLAN Id and forwarded to all the
downlinks of this VLAN group. Incoming packets tagged with the native VLAN ID are dropped.
Service VLAN & Service LAN Support
Service VLAN & Service LAN are supported in IBP to provide dedicated ports for handling
specific VLAN tagged packets. The packets with the same VLAN will be forwarded within the
members. Their operations are very similar but in Service LAN, the tagged of packet egress on
the uplink ports will be stripped and send as untagged packet. The members of the Service
LAN & Service VLAN can be overlapped with the members of port group or VLAN Port group
with different VLAN ID.
Port Backup Support
Port Backup feature is supported on IBP for redundant uplink ports. Two aggregation groups
are created automatically as the Port Group is created. One of the aggregation groups are
defined as active aggregation link, and the other is defined as backup aggregation group. As
the active aggregation group is link down, the backup aggregation group will be activated for
transmittion. After the active aggregation group is link up again, the backup aggregation group
will be deactivated.
Failover Propogation Support
Blade Server has a dual-port network interface controller, and it realizes the redundant LAN
ports in case of using NIC management program with LAN teaming function. In order to
improve the switching time and realize the “rapid” fail-over of redundant LAN ports, Failover
Propogation feature is introduced in IBP for uplink ports to speed up the switching of the
redundant LAN ports.
Link Aggregation and LACP
LACP uses peer exchanges across links to determine, on an ongoing basis, the aggregation
capability of various links, and continuously provides the maximum level of aggregation
capability achievable between a given pair of systems. LACP automatically determines,