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..
The simplest way to make your routers use DSCP or TOS information is to just make sure that Weighted Fair Queuing is enabled: Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface Serial0/0 Router(config-if)#fair-queue Router(config-if)#exit Router(config)#end Router# WFQ is enabled by default on all interfaces of E1 speeds (roughly 2 Mbps) or less. You can enable WFQ on higher speed interfaces as well, but we..
To filter application data based on the time of day, use the following commands: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z.Router1(config)#time-range NOSURFRouter1(config-time-range)# periodic weekdays 9:00 to 17:00Router1(config-time-range)#exitRouter1(config)#ip access-list extended NOSURFINGRouter1(config-ext-nacl)# deny tcp any any eq www time-range NOSURFRouter1(config-ext-nacl)# permit ip any anyRouter1(con..
All this effort to define LSA types, create areas, and fully flood the LSAs has one goal in mind: to allow all routers in that area to calculate the best, loop-free routes for all known subnets. Although the database exchange process may seem laborious, the process by which SPF calculates the best routes requires a little less thought, at least to the level re- quired for the CCNP ROUTE exam. In fact, the choice of the best route for a given subnet, and calculated by a ..
