Even when PIM routing is in place, RPs must be configured correctly to find traffic sources. The command show ip pim rp allows you to inspect the configured RPs and look at the mappings that have been applied. The full command is Router(config)#show ip pim rp [group-name | group-address | mapping] Using show ip pim rp, without further modifiers, displays RPs for active groups. If the command is modified with the group name, then only the RPs for the select..
Access routers connect the customer or enterprise site to the distribution network. In the ISP case, the router at the remote end of an access link is typically the customer premises equipment, and may be owned and operated by the customer. For large enterprise networks, in which the LANs and WANs are managed by different divisions or contractors, the access router typically is managed by either the WAN or the LAN operator— usually this is the latter if the LA..
The LAP is designed to be a “zero-touch” configuration. The LAP must find a WLC and obtain all of its configuration parameters, so you never have to actually configure it through its console port or over the network. The following sequence of steps detail the bootstrap process that an LAP must complete before it becomes active: Step 1. The LAP obtains an IP address from a DHCP server. Step 2. The LAP learns the IP addresses of any available WLCs. Step 3. The LAP sends a..
The nature of wireless communications makes defending against attacks very difficult but extremely necessary. Threats come in many forms. The vulnerability and exposure of your network comes from inside and outside your network. Arguably, the internal troubles typically outnumber the external threats. Security threats surface as disruption in service, unintentional leaks, and industrial espionage. Both professionals and amateurs carry out attacks against WLAN security shortc..
BackboneFast: Redundant Backbone Paths
In the network backbone, or core layer, a different method is used to shorten STP convergence. BackboneFast works by having a switch actively determine whether alternative paths exist to the root bridge, in case the switch detects an indirect link failure. Indirect link failures occur when a link that is not directly connected to a switch fails. A switch detects an indirect link failure when it receives inferior BPDUs from its designated bridge on either its root port or a bl..
