Dell POWEREDGE M1000E - Manual (Page 935)

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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-13270-03
Chapter 38 Configuring IP Unicast Routing
Configuring EIGRP
EIGRP Stub Routing
Note The IP base feature set contains EIGRP stub routing capability, which only advertises connected or
summary routes from the routing tables to other switches in the network. The switch uses EIGRP stub
routing at the access layer to eliminate the need for other types of routing advertisements. For enhanced
capability and complete EIGRP routing, the switch must be running the IP services feature set.
On a switch running the IP base feature set, if you try to configure multi-VRF-CE and EIGRP stub
routing at the same time, the configuration is not allowed.
In a network using EIGRP stub routing, the only allowable route for IP traffic to the user is through a
switch that is configured with EIGRP stub routing. The switch sends the routed traffic to interfaces that
are configured as user interfaces or are connected to other devices.
When using EIGRP stub routing, you need to configure the distribution and remote routers to use EIGRP
and to configure only the switch as a stub. Only specified routes are propagated from the switch. The
switch responds to all queries for summaries, connected routes, and routing updates.
Any neighbor that receives a packet informing it of the stub status does not query the stub router for any
routes, and a router that has a stub peer does not query that peer. The stub router depends on the
distribution router to send the proper updates to all peers.
In Figure 38-4 , Switch B is configured as an EIGRP stub router. Switches A and C are connected to the
rest of the WAN. Switch B advertises connected, static, redistribution, and summary routes to
Switches A and C. Switch B does not advertise any routes learned from switch A (and the reverse).
Figure 38-4 EIGRP Stub Router Configuration
For more information about EIGRP stub routing, see “Configuring EIGRP Stub Routing” section of the
Cisco IOS IP Configuration Guide, Volume 2 of 3: Routing Protocols, Release 12.2.
Monitoring and Maintaining EIGRP
You can delete neighbors from the neighbor table. You can also display various EIGRP routing statistics.
Table 38-8 lists the privileged EXEC commands for deleting neighbors and displaying statistics. For
explanations of fields in the resulting display, see the Cisco IOS IP Command Reference, Volume 2 of 3:
Routing Protocols, Release 12.2.
Host A Host B
Switch B Switch A
Routed to WAN
Switch C
Host C
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