HP A7533A HP StorageWorks Fabric OS 6.1.1 administrator guide (5697-0235, Dece - Page 472

. Figure 60 Configuration during the upgrade The switch Domain ID and backbone 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 Figure 61 shows an example of a simple redundant configuration. The configuration shown in Figure 61, 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 473 should also be preconfigured on the new routers and match with the routers being replaced. The backbone fabric ID of the new FC router should be the same as that of the replaced router. The same procedure can be repeated for FC router 1. NOTE: During the swap, traffic flowing through the ISL is affected. Figure 61 shows an example of a simple redundant configuration. Figure 61 Redundant router configuration Dual backbone configuration In the configuration shown in Figure 62, follow the steps described in "To configure the new router:" on page 473 for each FC router. Figure 62 is an example of a dual backbone configuration. 472 Migrating from an MP Router to a 400 MP Router