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With these drawbacks to in-band management, why doesn't everyone just use out-of band management? The answer is simple: time and money. In addition, if the management interface is assigned to a VLAN that has other ports as members, any broadcast or multicast traffic on that VLAN is seen by the management interface and must be processed by the supervisor.Īs the speed of processors has improved with newer supervisors, the risk of overwhelming a supervisor with broadcast/multicast traffic has declined somewhat, but has not been eliminated completely. Downsides to in-band management include a potential for switches to be isolated and unmanageable if connectivity to the site or individual device is lost, for example in a spanning-tree loop or if fiber connections are cut accidentally. An in-band management connection is the easiest to configure and the most cost effective because management traffic rides the same infrastructure as user data. ![]() The choice between out-of-band and in-band management is often not an easy one because each has its pros and cons. Remote wake up on vlans series#Supervisors for the Catalyst 4500 series switches offer an additional out-of-band management interface via a 10 Mbps or 10/100 Mbps Ethernet interface (me1) depending on the Supervisor model. Remote wake up on vlans serial#At this point, the administrator can assign an IP address to either an out-of-band management (sl0) interface via the Serial Line Internet Protocol (SLIP), a predecessor to the Point-to-Point Protocol (PPP), or assign an IP address to an in-band management interface (sc0 or sc1). Remote wake up on vlans full#After a physical connection is made between the console port on a Catalyst switch and a serial port on a workstation or terminal server, the administrator has full access to the switch for configuration. Consult the Catalyst documentation at to determine the kind of connectors and cables appropriate for each platform. ![]() Each Catalyst switch ships with the appropriate console cable and connectors to connect to a host such as a Windows workstation or terminal server. Out-of-band management is achieved initially through the serial console port on the Supervisor module. Out-of-band management interfaces are not connected to the switching fabric and do not participate in any of these functions. In-band management interfaces are connected to the switching fabric and participate in all the functions of a switchport including spanning tree, Cisco Discovery Protocol (CDP), and VLAN assignment. Catalyst switches support both in-band and out-of-band management. Remote wake up on vlans how to#One item to consider is how to handle remote access to the switch. Management Interfacesīelieve it or not, one of the first things to think about when configuring a new network is management, primarily because network management typically is the last thing to be thought of when the network is implemented, and seemingly one of the most tedious things to change or improve after the network is operational. This begins with planning the method for remotely accessing the switch, followed by basic configuration of the switch, and then configuring connections between switches. The daily operation of a switched environment can be greatly simplified and future problems avoided by applying a few best practices and a little bit of planning. Everyone has probably heard the old joke "ready, fire, aim." Unfortunately, this phrase can sometimes describe the implementation of some networks given what appears to be a lack of basic planning prior to configuration. ![]()
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