RSPAN Guidelines and Restrictions
These are RSPAN guidelines and restrictions: • All participating switches must be connected by Layer 2 trunks. • Any network device that supports RSPAN VLANs can be an RSPAN intermediate device. • Networks impose no limit on the number of RSPAN VLANs that the networks carry. • Intermediate network devices might impose limits on the number of RSPAN VLANs that they can support. • You must configure the RSPAN VLANs in all source, intermediate, and destination..
Summarization hides details in order to simplify the routing process. One of the keys to scalable routing is to take large complicated sets of advertisements and reduce them as much as possible. Summarization reduces router resource consumption (CPU and memory) required to store and process routes by reducing the number of routes. Summarization also saves network capacity, because fewer advertisements are required and each advertisement is smaller. Summarization also hi..
The final tool covered here for finding a router’s RP is called Anycast RP with Multicast Source Discovery Protocol (MSDP). Anycast RP is actually an implementation feature more than a new feature with new configuration commands. As will be explained in the upcoming pages, Anycast RP can actually use static RP configuration, Auto-RP, and BSR. The key differences between using Anycast RP and using either Auto-RP or BSR relate to how the redundant RPs are used. The difference..
A primary function of access-edge policies is to establish and enforce trust boundaries. A trust boundary is the point within the network where markings (such as CoS or DSCP) begin to be accepted. Previously set markings are overridden (as required) at the trust boundary. The design objective relating to trust boundaries is to enforce these as close to the endpoints as technically and administratively possible. This is illustrated in Figure 12-3. Figure 12-3. Establishing T..
Use the ntp logging command to enable the logging of NTP events: Router2#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router2(config)#ntp logging Router2(config)#end Router2# Starting in IOS Version 12.3(7)T, Cisco added the NTP logging feature. By implementing this feature, the router will log significant NTP events such as peer loss, peer reachability, and clock synchronization events. To view the NTP logging events on the router..
