Hitachi GR2000 manual

When forwarding RIP packets with this device on point-to-point circuits, destinat addresses are sent by unicast addresses (interface address of the other device). I addition, when receiving RIP packets from point-to-point circuits, they are receiv with a unicast address (one’s own interface address or limited broadcast address (address of all 1’s) as the destination address.

With Cisco routers, the RIP packet destination address is different because of the broadcast-address" setting. Do not make the "ip-broadcast-address" setting if th device is connected to Cisco routers.

4.7.6Cautions When Using OSPF on Point-to-Point Circuits

When using OSPF on point-to-point circuits with this device, the HelloInterval default value becomes 10 seconds and the Routerdeadinterval default value becom 40 seconds. With the devices shown in Table 4-84, the HelloInterval default valu becomes 40 seconds and the Routerdeadinterval default value becomes 120 secon on point-to-point circuits. If this device is connected to either of those shown in Table 4-84 by point-to-point circuits, match the HelloInterval value and the Routerdeadinterval value in both routers.