HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.1.x administrator guide (5697 - Page 466

. Figure 55 Configuration during the upgrade The switch Domain ID and BB fabric ID of the new FC router can be identical. Once the metaSAN is stable, EX_Ports on the new router are 'active', the old router can be taken out of the setup. Redundant configuration The configuration shown in Figure 56 on page 466, shows that old routers can be removed one by one. For example, FC router 2 can be replaced with the new FC router. You are expected to maintain the connections to the edge fabrics and the other router, same as with old router. Configuration parameters described in "To configure the new router:" on page 467 should also be preconfigured on the new routers and match with the routers being replaced. The same procedure can be repeated for FC router 1. NOTE: During the swap, traffic flowing through the ISL is affected. Figure 56 shows an example of a simple redundant configuration. Figure 56 Redundant router configuration Dual backbone configuration In the configuration shown in Figure 57, follow the steps described in "To configure the new router:" on page 467 for each FC router. Following is the example of a dual backbone configuration. 466 Migrating from an MP Router to a 400 MP Router