11.22 Configuring Best Path for Dual-Homed Internet Connectivity

CCNP RS 300-101, Establishing Internet Connectivity, Uncategorized

There are multiple ways to route outbound traffic:

  1. Static Routes
  2. Dynamic Routing Protocols (EIGRP, OSPF, BGP)
  3. FHRP (HSRP, GLBP, VRRP)

The connectivity between the customer (CE) and ISP (PE) routers will use either:

  1. Static Routes
  2. BGP

To load-balance or load-share, you must use BGP when connecting to the ISP. If a primary/standby configuration is sufficient, you may also use floating static routes.

Redistribute routes from the EGP into an IGP using different metrics, as is shown in the following example:

Bandwidth metric is better on router GW1.
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