Active-Active Redundancy; Hot-Standby Redundancy - Lenovo Flex System Fabric CN4093 Application Manual

Active-Active Redundancy

Hot-Standby Redundancy

© Copyright Lenovo 2015
In an active‐active configuration, shown in Figure
redundancy for each other, with both active at the same time. Each switch
processes traffic on a different subnet. When a failure occurs, the remaining switch
can process traffic on all subnets.
For a configuration example, see "High Availability Configurations" on page
Figure 60. Active‐Active Redundancy
Internet
Enterprise
Routing Switch
The primary application for VRRP‐based hot‐standby is to support Server Load
Balancing when you have configured Network Adapter Teaming on your server
blades. With Network Adapter Teaming, the NICs on each server share the same
IPv4 address, and are configured into a team. One NIC is the primary link, and the
others are backup links. For more details, refer to the relevant network adapter
documentation.
The hot‐standby model is shown in Figure
Figure 61. Hot‐Standby Redundancy
Clients
Enterprise
Routing Switch
60, two switches provide
Servers
Switch 1
Switch 2
Active (subnet B and D)
61.
Active
Switch 1
Interswitch
Servers
Link
Switch 2
Standby
Backup Link
Chapter 35: Virtual Router Redundancy Protocol
10.10.10.1
10.10.10.2
479.
475