Can EIGRP neighbors form an adjacency if the timers do not match?
Yes
However, hellos must be received before the hold time reaches zero.
In EIGRP, the hello interval must be less than the hold time. True or False?
TRUE
This ensures that hello packets are received in time to maintain the adjacency.
What is the default EIGRP hello timer?
5 seconds
The hello timer is the interval at which EIGRP routers send hello packets to discover and maintain neighbor relationships.
What is the default hold time value in relation to the hello interval?
Three times the hello interval
The default value for the hold time is 15 seconds.
How do you configure EIGRP hello/hold timers in classic mode?
interface GigabitEthernet0/1
ip address 10.12.1.1 255.255.255.0
ip hello-interval eigrp 100 3
ip hold-time eigrp 100 15
How do you configure EIGRP hello/hold timers in named mode?
router eigrp EIGRP-NAMED
address-family ipv4 unicast autonomous-system 100
!
af-interface default
hello-interval 3
hold-time 15
exit-af-interface
What command enables you to see EIGRP hello and hold timers?
show ip eigrp interfaces detail gi0/1
What command do you use for EIGRP summarization in classic mode?
interface gi0/4
ip summary-address eigrp 100 172.16.0.0/16
What command do you use for EIGRP summarization in named mode?
router eigrp EIGRP-NAMED
address-family ipv4 unicast autonomous-system 100
af-interface GigabitEthernet0/4
summary-address 172.16.0.0 255.255.0.0
How do you enable automatic summarization in EIGRP?
By using the command auto-summary under the EIGRP process for classic configuration mode or topology base for named mode configuration
These commands allow EIGRP to summarize routes automatically.
What command is used to disable automatic summarization in EIGRP?
no auto-summary
This command prevents EIGRP from summarizing routes automatically.
By default, EIGRP stubs advertise which type of routes?
Connected and summary routes
What command is used to configure a stub router in EIGRP?
eigrp stub {connected | receive-only | redistributed | static | summary}
What is the receive-only option in an EIGRP stub?
An option that does not advertise any networks to its neighbors
It cannot be combined with other EIGRP stub options.
What do EIGRP stub sites prevent regarding route functionality?
Prevent the EIGRP stub site route from being a transit site
This ensures that the stub site does not forward traffic between other networks.
One key benefit of EIGRP stub sites is that EIGRP neighbors on WAN links do not send EIGRP queries to the _______ when a route becomes active.
remote site
This reduces unnecessary traffic and improves efficiency on WAN links.
The EIGRP stub site feature allows downstream routers to receive and advertise _______ across the WAN.
network prefixes
This facilitates better routing information sharing among connected networks.
The EIGRP stub site function is available only in which configuration mode?
EIGRP named mode
This function is specific to the EIGRP named mode configuration.
What command is used to enable the stub site function in EIGRP?
eigrp stub-site as-number:identifier
This command activates the stub site function and identifier.
What must remain the same for all devices in a site when using EIGRP stub site?
as-number:identifier
Consistency of the as-number:identifier is crucial for proper EIGRP stub site function.
How do you configure EIGRP stub-site?
router eigrp EIGRP-NAMED
address-family ipv4 unicast autonomous-system 100
af-interface Serial1/0
stub-site wan-interface
af-interface Serial1/1
stub-site wan-interface
exit-af-interface
eigrp stub-site 100:1
exit-address-family
What command changes changes the EIGRP available bandwidth for a link on EIGRP classic configuration?
ip bandwidth-percent eigrp as-number percentage
ip bandwidth-percent eigrp 100 25
interface GigabitEthernet0/0
What command changes changes the EIGRP available bandwidth for a link on EIGRP named configuration?
router eigrp EIGRP-NAMED
address-family ipv4 unicast autonomous-system 100
af-interface GigabitEthernet0/0
bandwidth-percent 25
How do you disable split-horizon in EIGRP classic mode?
interface tunnel 100
no ip split-horizon eigrp 100
