RSPAN supports source ports, source VLANs, and destinations on different switches, which provides remote monitoring of multiple switches across your network (see Figure 41-2). RSPAN uses a Layer 2 VLAN to carry SPAN traffic between switches. RSPAN consists of an RSPAN source session, an RSPAN VLAN, and an RSPAN destination session. You separately configure RSPAN source sessions and destination sessions on different switches. To configure an RSPAN source session on one switch,..
Dynamically Finding the RP Using Auto-RP
Static RP configuration is suboptimal under the following conditions: ■ When an enterprise has a large number of PIM-SM routers and the enterprise wants to use many different RPs for different groups, it becomes time consuming and cumbersome to statically configure the IP addresses of many RPs for different groups on all the routers. ■ When an RP fails or needs to be changed because a new RP is being installed, it becomes extremely difficult in a statically configured P..
DoS/Worm-Mitigation Strategies
A proactive approach to mitigating DoS/worm flooding attacks within campus environments is to respond immediately to out-of-profile network behavior that indicates a DoS or worm attack using access-layer policers. Such policers could meter traffic rates received from endpoint devices, and when these exceed specified watermarks (at which point they no longer are considered normal flows), these policers could mark down excess traffic. In this respect, the policers would be fai..
Monitoring and Troubleshooting RSVP Support for Frame Relay
Example 22-4 shows the configuration commands needed to add on routers R1 and R2 for this purpose. Example 22-4. Using ip rsvp sender-host and ip rsvp reservation-host to Routers R1 and R2 ! Router R1 R1(config)# ip rsvp sender-host 20.0.0.2 10.0.0.1 udp 7000 7001 16 1 ! Router R2 R2(config)# ip rsvp reservation-host 20.0.0.2 10.0.0.1 UDP 7000 7001 FF LOAD 16 1 The ip rsvp sender-host command causes router R1 to simulate an IP RSVP sender-host located at 10.0.0.1, which ..
Configuring Cisco IOS MLP LFI for Frame Relay on a Cisco Router
This section describes the configuration tasks involved in setting up the LFI feature for Frame Relay virtual circuits on a Cisco router. Note that the Cisco IOS software supports LFI via MLP, LFI via MLP over Frame Relay, and LFI via MLP over ATM. In this section, only the configuration tasks concerning LFI via MLP over Frame Relay virtual circuits are discussed. NOTE The Cisco IOS MLP LFI feature for Frame Relay and ATM virtual circuits is released in Cisco IOS Release 12..
