Ip Routing Commands; Static Routes/Ecmp Static Routes - Dell Networking 7048 Reference Manual

IP Routing Commands

The Routing Module provides the base Layer 3 support for Local Area
Network (LAN) and Wide Area Network (WAN) environments. The
PowerConnect switches allows the network operator to build a complete
Layer 3+ configuration with advanced functionality. As the PowerConnect
defaults to Layer 2 switching functionality, routing must be explicitly enabled
on the PowerConnect to perform Layer 3 forwarding. For PowerConnect
switches, routing is only supported on VLAN and Loopback interfaces for in-
band ports. It is not possible to route packets to or from the out-of-band
interface.

Static Routes/ECMP Static Routes

The operator is able to configure static and default routes with multiple next
hops to any given destination. Permitting the additional routes creates several
options for the PowerConnect network operator.
1 The operator configures multiple next hops to a given destination,
intending for the router to load share across the next hops.
2 The operator configures multiple next hops to a given destination,
intending for the router to use the primary next hops and only use the
other next hops if the primary next hops are unusable.
The operator distinguishes static routes by specifying a route preference
value. A static route with a lower preference value is a more preferred static
route. Next hops with the same preference are grouped into a single ECMP
route. A less preferred static route is used if the more preferred static route is
unusable. (The link is down or the next hop IP address cannot be resolved to a
MAC address.)
In PowerConnect, the operator deletes an individual next hop from a static
route or deletes an entire static route at once. The cost of a static route is
always 0.
The addition of a preference option has a side benefit. The preference option
allows the operator to control the preference of individual static routes
relative to routes learned from other sources (such as OSPF). When routes
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IP Routing Commands
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