Laurel Bridge Compass
About Laurel Bridge Compass
Laurel Bridge Compass Routing Workflow Manager automates the ingestion, distribution, tracking, and access to medical imaging studies across disparate systems and locations, empowering healthcare organizations of all sizes to easily build and manage a scalable imaging workflow layer that enhances interoperability between PACS, VNA, and clinical IT environments.
It acts as a router for DICOM images/messages and HL7 version 2.x messages and is able to route from one or more Sources to one or more Destinations.
Key benefits of load balancing
Here are a few key benefits:
- Ensures the application is always available
- Provides stable, optimal performance
- Ability to isolate servers which reduces risk when performing upgrades/maintenance
- Scalability
How to load balance Laurel Bridge Compass
The load balancer can be deployed in four fundamental ways: Layer 4 DR mode, Layer 4 NAT mode, Layer 4 SNAT mode, and Layer 7 SNAT mode.
For Laurel Bridge Compass, Layer 4 SNAT is recommended.
Layer 4 SNAT mode
Layer 4 SNAT mode is a high performance solution, although not as fast as Layer 4 NAT mode or Layer 4 DR mode.
The load balancer translates all requests from the external Virtual Service to the internal Real Servers in the same way as NAT mode.
Layer 4 SNAT mode is not transparent, an iptables SNAT rule translates the source IP address to be the load balancer rather than the original client IP address. Layer 4 SNAT mode can be deployed using either a one-arm or two-arm configuration. For two-arm deployments, eth0 is normally used for the internal network and eth1 is used for the external network although this is not mandatory.
If the Real Servers require Internet access, Autonat should be enabled using the WebUI option: Cluster Configuration > Layer 4 – Advanced Configuration, the external interface should be selected.
Layer 4 SNAT requires no mode-specific configuration changes to the load balanced Real Servers. Port translation is possible with Layer 4 SNAT mode, e.g. VIP:80 → RIP:8080 is supported. You should not use the same RIP:PORT combination for layer 4 SNAT mode VIPs and layer 7 SNAT mode VIPs because the required firewall rules conflict.
guides
Load Balancing Laurel Bridge Compass
Read deployment guide
Medical Imaging & Information System Protocols Deployment Guide
Read deployment guidemanual
Reda Manual
Read manualcase studies
NHS Trust, North Lincs and Goole - Improving the resilience and availability of medical imaging systems
Read case study
Fujifilm - Partnership ensures highly available and reliable medical imaging systems
Read case study
