Page 139 - Handout Computer Network.

Computer Network 2026

6.5.4 Static Route Operation

Static route operations can be summarized into a three-part sequence:

1. The network administrator configures the route. 2.
The router installs the route in the routing table.
3. Packets are routed using the static route.

6.5.5 Dynamic Routing Overview

Dynamic routing is necessary to allow networks to update and adapt quickly to changes.
The network shown in Figure 6-10 shown a Dynamic Route Operation adapts differently to
topology changes depending on whether it uses statically or dynamically configured routing
information.

Figure 6-10 shown a Dynamic Route Operation

Static routing allows routers to properly route a packet from network to network based
on manually configured information.

In the example, Router A always sends traffic destined for Router C to Router D. The
router refers to its routing table and follows the static knowledge residing there to relay the
packet to Router D. Router D does the same and relays the packet to Router C. Router C delivers
the packet to the destination host. If the path between Router A and Router D fails, Router A is
not capable of relaying the packet to Router D using that static route. Until Router A manually is
reconfigured to relay packets by way of Router B, communication with the destination network
is impossible.

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