Specifications

86 Implementing IBM System Networking 10Gb Ethernet Switches
VRRP high availability with VLAGs
VRRP can be used in conjunction with VLAGs and LACP-capable servers and switches to
provide seamless redundancy (Figure 2-17).
Figure 2-17 Active-active configuration using VRRP and VLAGs
2.7.7 Active Multipath Protocol
You can use Active MultiPath Protocol (AMP) to connect three switches in a loop topology,
and load-balance traffic across all uplinks (no blocking). When an AMP link fails, upstream
communication continues over the remaining AMP link. After the failed AMP link
re-establishes connectivity, communication resumes to its original flow pattern.
AMP is supported over Layer 2 only. Layer 3 routing is not supported. STP is not required in
an AMP Layer 2 domain. STP BPDUs are not forwarded over the AMP links, and any BPDU
packets received on AMP links are dropped.
Each AMP group contains two aggregator switches and one access switch. Aggregator
switches support up to 22 AMP groups. Access switches support only one AMP group.