Dual Channel & Dynamic Dual Channel Provide Full Load Balancing And Switch Redundancy; Dual Channel/Dynamic Dual Channel Capabilities Comparison To Other Team Types - HP Integrity rx2800 - i2 White Paper

With Dual Channel, a server can have full transmit and receive load balancing with switch
redundancy (refer to Figure
Figure 4-20 Dual Channel & Dynamic Dual Channel provide full load balancing and switch
redundancy
NIC 1 (A)
HP Network
PRIMARY
Adapter
Team
NIC 2 (A)
SECONDARY
(Dual
Channel)
1.1.1.1
NIC 3 (B)
SECONDARY
NIC 4 (B)
SECONDARY
HP Integrity Server
Table 4-15 Dual Channel/Dynamic Dual Channel capabilities comparison to other team types
NFT
TLB
Dual Channel
Dynamic Dual
Channel
SLB
802.3ad
Dual Channel works by dividing the teamed ports into two groups – Group A and Group B.
Each group functions much like an individual team. Because of this, Dual Channel is sometimes
described as a team of teams because it is a team comprising two team-like entities called Group
A and Group B. The teamed ports within each group behave exactly like an SLB team. This means
that all teamed ports within a particular group must be connected to the same switch. Also, if
there is more than one teamed port in the same group, the switch must be configured for Port
Trunking (just like SLB). Within each group, any teamed port can fail and the group is still
functional (just like SLB). If all of the teamed ports in a group fail, the team is still available via
the other group. Since the IP address is "owned" by the team instead of either group (A or B),
the server maintains network connectivity (with the same IP address) as long as at least one
teamed port in at least one group is functional.
4-20).
Port
Channel
Port
Channel
Maximum Server Bandwidth
Transmit = 4000 Mbit
Receive = 4000 Mbit
Fault Tolerance Transmit Load
Balancing
√
√
√
√
√
√
Switch
Client 1
Client 2
Switch
Client 3
Client 4
Receive Load
Balancing
√
√ √
√ √
√ √
√ √
Types of HP Integrity Network Adapter Teams
Client ARP Table:
1.1.1.1 = A
Client ARP Table:
1.1.1.1 = A
Switch
Redundancy
Client ARP Table:
1.1.1.1 = B
Client ARP Table:
1.1.1.1 = B
Transmit Load
Balancing
Receive Load
Balancing
Switch Redundancy
√
√
√
√
75