Operation Manual – Management VLANH3C S3100 Series Ethernet Switches Chapter 1 Management VLAN Configuration1-1Chapter 1 Management VLAN Configuration1.1 Introduction to Management VLAN1.1.1 Management VLANTo manage an Ethernet switch remotely through Telnet or the built-in Web server, theswitch need to be assigned an IP address, and make sure that a route exists betweenthe user and the switch. As for an H3C series Layer 2 Ethernet switch, only themanagement VLAN interface can be assigned an IP address.The management VLAN interface of a switch can obtain an IP address in one of thefollowing three ways:z Through the command used to configure IP addressz Through BOOTP (In this case, the switch operates as a BOOTP client.)z Through dynamic host configuration protocol (DHCP) (In this case, the switchoperates as a DHCP client)The three ways of obtaining an IP address cannot be configured at the same time. Thatis, the latest IP address obtained causes the previously IP address to be released. Forexample, if you assign an IP address to a VLAN interface by using the correspondingcommands and then apply for another IP address through BOOTP (using the ipaddress bootp-alloc command), the former IP address will be released, and the finalIP address of the VLAN interface is the one obtained through BOOTP.Note:For details of DHCP, refer to the DHCP module.1.1.2 Static RouteA static route is configured manually by an administrator. You can make a network withrelatively simple topology to operate properly by simply configuring static routes for it.Configuring and using static routes wisely helps to improve network performance andcan guarantee bandwidth for important applications.The disadvantages of static route lie in that: When a fault occurs or the networktopology changes, static routes may become unreachable, which in turn results innetwork failures. In this case, manual configurations are needed to recover thenetwork.
