Configuring MED: Single Adjacent AS
Example 13-10 shows an example MED configuration that matches Figure 13-11, with R5 and R7 setting the MED for 11.0.0.0/8 to 10 and 20, respectively. Example 13-10 Classical MED Example Between Two Ass It is important that both R5 and R7 set the MED for 11.0.0.0/8. If R5 had set MED to 10, and R7 had done nothing, the router through R7 would have been the best route. R1 and R3 would have used their assumed default setting of 0 for MED for the route through R1 and R7, and,..
Configuration Options for an Internal Router
The following options allow you to tune the OSPF configuration of an internal router: • Router ID • Loopback interface • cost command • priority command
Ensuring the ELANs Are Functional between the Source and the Destination
If you configure the ELANs correctly, you should be able to ping each of the interfaces for each MPS and NHS along the default path between the source and destination client. If not, you either configured the ELAN incorrectly, you have a Layer 3 issue such as a bad IP address, or you have some routing protocol issues. Examine your intra-ELAN connectivity first. See if you can ping the neighbor device(s) within the ELAN. If you can, ping the next device in the next ELAN, eith..
Port-based authentication can be handled by one or more external Remote Authentication Dial-In User Service (RADIUS) servers. Although many Cisco switch platforms allow other authentication methods to be configured, only RADIUS is supported for 802.1x. The actual RADIUS authentication method must be configured first, followed by 802.1x, as shown in the following steps: Step 1. Enable AAA on the switch. By default, AAA is disabled. You can enable AAA for port-based aut..
The Origins of Frame Relay: X.25
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Frame Relay has its roots in the X.25 protocol, a robust packet-switched WAN protocol widely deployed in the early 1970s to connect geographically dispersed LANs and WANs. The X.25 protocol works well on noisy transmission mediums, which observe a high rate of errors and packet drops. X.25's windowing, flow, and error control fe..
