Using Static Routes to 0.0.0.0, with redistribute static

Routers consider a route to 0.0.0.0/0 as a default route. RIP and EIGRP support redistribution ofstatic routes, including such a default static route. The rules and conditions for redistributing static defaults into RIP and EIGRP are as follows: ■ The static ip route 0.0.0.0 0.0.0.0 and redistribute static commands need to be configuredon the same local router. ■ The metric must be defaulted or set, using the same methods covered earlier in this chapter. ■ The redist..

Data Transfer

The exchange of data in an 802.11 network is bidirectional between the radio card and access point. As mentioned earlier, data frames in an infrastructure wireless LAN do not travel directly between wireless users. Instead, the access point relays the data. A radio card or access point (802.11 station) having the destination MAC address of the data frame replies with an acknowledgement (ACK) frame. This adds significant overhead to a wireless LAN as compared to an Ethernet n..

MPLS Network Components

An MPLS-based network consists of routers and switches interconnected via transport facilities such as fiber links (see Figure 1-1). Customers connect to the backbone (core) network through multiservice edge (MSE) routers. The backbone comprises the core routers that provide high-speed transport and connectivity between the MSE routers. An MSE router contains different types of line cards and physical interfaces to provide Layer 2 and Layer 3 services, including ATM, FR, Ethe..

Synchronizing the Time on All Routers (NTP)

Network Time Protocol (NTP) is an open standard protocol for time synchronization. You can implement NTP on a router to provide automatic and efficient time synchronization. To enable a basic NTP configuration, enter the following commands: Router#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. Router(config)#clock timezone EST -5 Router(config)#clock summer-time EDT recurring Router(config)#ntp server 172.25.1.1 Router(config)#end Rou..

Influencing the Choice of Best Route for Summary Routes

Often, engineers plan route summarization for the same address block on multiple routers. Such a design takes advantage of redundancy and can be used to perform basic load balancing of traffic across the various paths through the internetwork. Figure 1-2 shows one such example, with Routers WAN1 and WAN2 summarizing routes for the two address blocks located on the branch office LANs: 10.11.0.0/16 and 10.12.0.0/16. Figure 1-1 Figure 1-2 Choosing Locations for Route Summa..