CCNP Command Practice 2

Question 1

Configure EIGRP

Is the wildcard mask required? If not, what happens?

Answer 1

(config)# router eigrp {asn}
(config-router)# network {ip address} {mask}

Wildcard mask is not required. If no wildcard mask is specified the network is summarized to the nearest major network boundary.

Question 2

Displays changes with EIGRP neighbors

Answer 2

(config-router)# log-neighbor-changes

Question 3

Configure EIGRP bandwidth

Answer 3

(config-if)# bandwidth x

Measured in kilobits

Question 4

Enable or disable EIGRP auto-summary

Answer 4

(config-router)# auto-summary

no auto-summary

Question 5

Configure EIGRP manual summarization

Answer 5

(config)# interface

(config-if)# ip summary-address eigrp {asn} {ip address} {mask} {admin distance}

Question 6

Configure an EIGRP passive interface

Configure all interfaces as passive

Answer 6

(config)# router eigrp
(config-router)# network {ip address}
(config-router)# passive-interface [default/interface]

Question 7

Create a pseudo passive EIGRP interface

Answer 7

(config)# router eigrp
(config-router)# network
(config-router)# distribute-list {#/prefix/route-map} out {interface}

(config)# access-list {#} deny any

Question 8

Inject default route into EIGRP using a static route

Answer 8

(config)# ip route 0.0.0.0 0.0.0.0
(config)# router eigrp {asn}
(config-router)# redistribute static

Question 9

Inject a default route into EIGRP using the IP default network command

Answer 9

(config)# router eigrp {asn}
(config-router)# network {ip address}

(config) #ip route 0.0.0.0 0.0.0.0 {next hop}
(config) #ip default-network {network address}

Question 10

Inject a default route inte EIGRP by summarizing to 0.0.0.0/0

Answer 10

(config)# router eigrp {asn}
(config-router)# network {ip address}

(config-if)# ip address {ip address} {mask}
(config-if)# ip summary-address eigrp 0.0.0.0 0.0.0.0 {asn} 0.0.0.0 0.0.0.0 [admin distance]

Question 11

Accept default routing information into EIGRP

Answer 11

(config)# router eigrp {asn}
(config-router)# default-information in

Note: add no to not accept default information

Question 12

Change maximum paths EIGRP

Answer 12

(config)# router eigrp {asn}

(config-router)#maximum-paths {paths}

Question 13

Change the EIGRP variance

Answer 13

(config)# router eigrp {asn}

(config-router)# variance n

Question 14

Configure EIGRP bandwidth use

Answer 14

(config)# interface {interface}
(config-if)# bandwidth x
(config-if)# ip bandwidth-percent eigrp {asn} {percent}

Question 15

Configure EIGRP authentication

Answer 15

(config)# key chain {name}
(config-keychain)# key {number}
(config-keychain-key)# key-string {string}
(config-keychain-key)#accept-lifetime xxxxxxx
(config-keychain-key)#send-lifetime start-time xxxx
(config-keychain-key)accept-lifetime start-time xxxx

(config)#interface {interface}
(config-if)# ip authentication mode eigrp {asn} md5
(config-if)# ip authentication key-chain eigrp {asn} {name}

Question 16

Configure an EIGRP stub network

What are the options?

Which are enabled by default?

Answer 16

(config) # router eigrp {asn}
(config) # eigrp stub

Connected, static, summary, and receive-only.

Connected and summary are enabled by default

Question 17

Manually configure EIGRP neighbor

Will communication be sent unicast or multicast?

Answer 17

(config)# router eigrp {asn}
(config-router)# network {network}
(config-router)# neighbor {ip address}

unicast

Warning: This disables multicast on the interface

Question 18

Configure EIGRP over frame-relay dynamic mappings

Answer 18

(config)# interface {interface}
(config-if)# ip address {ip address} {mask}
(config-if)# encapsulation frame-relay

(config)# router eigrp {asn}
(config-router)# network {ip address}

Note: Split horizon is disabled by default on the physical interface

Question 19

Configure EIGRP over frame relay with static mappings

Answer 19

(config)# interface {interface}
(config-if)# ip address {ip address} {mask}
(config-if)# encapsulation frame-relay
(config-if)# frame-relay map ip {ip address} {dlci} [broadcast]

(config)# router eigrp {asn}
(config-router)# network {ip address}

Make sure to include the broadcast keyword to allow broadcasts to be forwarded on the interface! Not needed when mapping the local DLCI to local IP!

Question 20

EIGRP over frame relay using multipoint subinterfaces

Answer 20

(config)# interface {interface}
(config-if)# no ip address
(config-if)# no frame-relay inverse-arp eigrp {asn}

(config)interface {interface}.1 multipoint
(config-subif) ip address {ip address} {mask}
(config-subif)# no ip split-horizon eigrp {asn}
(config-subif)# frame-relay map ip {ip address} {dlci} [broadcast]

(config)# router eigrp {asn}
(config-router)# network {ip address}

Make sure to include the broadcast keyword to allow broadcasts to be forwarded on the interface! Not needed when mapping the local DLCI to local IP!

Question 21

EIGRP over frame relay with point-to-point subinterfaces

Answer 21

(config)# interface
(config-if)#no ip address
(config-if)#encapsulation frame-relay

(config)# interface {interface}.1 point-to-point
(config-if)#ip address {ip address}
(config-if)#frame-relay interface-dlci {dlci}

Question 22

Configure OSPF

Answer 22

(config)# router ospf {PID}
(config-router)# network {ip address} area {area}
(config-router)#log-adjacency-changes detail

Question 23

Configure OSPF router ID and DR/BDR priority

What does a priority of 0 do?

Answer 23

(config)# router ospf {PID}
(config-router)# router-id {router-id}
(config-router)# ip ospf priority {priority}

Priority 0 makes a router ineligable to become either the BDR or the DR

Question 24

Configure an OSPF interface as passive

Answer 24

(config)# router ospf {PID}
(config-router)# network {ip address}
(config-router)# passive-interface {interface/default}

Question 25

Modify the OSPF cost

Answer 25

(config)#interface {interface} (config-if)# ip address {ip address} {mask} (config-if)# ip ospf cost {cost}

Question 26

OSPF auto-cost reference bandwidth

Answer 26

(config)# router ospf 1 (config-router)# auto-cost reference-bandwidth 1000 Note: Units are in Mbps

Question 27

OSPF authentication using MD5

Answer 27

(config)# router ospf (config-router)# area {area} authentication message-digest (config) # interface {interface} (config) # ip ospf message-digest-key {key} md5 {password} Note: Both key number and password must match that of the neighboring router.

Question 28

Propogate default route using OSPF

Answer 28

(config)# ip route 0.0.0.0 0.0.0.0 {interface} (config)# router ospf {PID} (config-router)# default-information originate [always] The always option will cause the route to propogate a default route even if one is not configured on the router

Question 29

Configure an OSPF stub or totally stubby area

Answer 29

(config)# router ospf {PID} (config-router)# network {ip address} (config-router)# area {area} stub [no-summary]

Question 30

Configure OSPF not-so-stubby area (NSSA)

Answer 30

(config)# router ospf {PID} (config-router)# network {ip address} (config-router)# area {area} nssa [no-summary]

Question 31

Configure OSPF inter-area route summarization Configure OSPF external route summarization (on asbr)

Answer 31

(config)# router ospf {PID} (config-router)# area {area} range {network address} {mask} (config-router)# summary-address {IP} {mask}

Question 32

Configure OSPF virtual link

Answer 32

(config)# router ospf {PID} (config-router)# router id {RID} (config-router)# network statements here (config-router)# area {transit area} virtual link {opposite end rid} Note: A virtual link has the following requirements: It must be established between two routers that share a common area and are both ABRs. One of these two routers must be connected to the backbone. A virtual link cannot be configured through stub areas.

Question 33

OSPF full mesh frame relay - NBMA on physical interfaces

Answer 33

(config)# router ospf {PID} (config-router)# network {IP} area {area} (config-router)# neighbor {IP} (config)# interface {interface} (config-if)# encapsulation frame-relay (config-if)# ip address {IP} {mask} (config-if)# ip ospf network non-broadcast (config-if)# frame-relay map ip {IP} {dlci}

Question 34

OSPF full-mesh frame relay broadcast on physical interface

Answer 34

``` (config)# interface (config-if)# encapsulation frame-relay (config-if)# ip address {IP} {mask} (config-if)# ip ospf network broadcast (config-if)# ip ospf priority {priority} (config-if)# frame-relay map ip broadcast ``` (config)# router ospf {PID} (config-router)# network {IP} area {area}

Question 35

Full-mesh Frame Relay: Point-to-Multipoint Networks

Answer 35

(config)# interface {interface} (config-if)# encapsulation frame-relay (config-if)# ip address {IP} {mask} (config-if)# ip ospf network point-to-multipoint (config)# router ospf {PID} (config-router)# network {IP} area {area} The optional non-broadcast command is a cisco extension toth eRFC compliant ponit to multipoint mode. Neighbors must be manually defined in non-broadcast mode. DR/BDRs are not used in non-broadcast mode

Question 36

Full-mesh frame relay: point-to-point networks with subinterfaces

Answer 36

(config)# interface {interface} (config-if)# encapsulation frame-relay (config)# interface {interface}.x point-to-point (config-if)# ip address (config-if)# frame-relay interface-dlci {dlci}

Question 37

Route filtering using the distribute list command for filtering routes on an interface, in and out, globally, in and out.

Answer 37

(config)# router (config-router)# distribute list in (config-router)# distribute list out (config-router)# distribute list

Question 38

Configure generic BGP

Answer 38

(config)#router bgp {PID} Note: Only one BGP process may run at a time (config-router)# network {network} mask {mask} (config-router)# neighbor {neighbor IP} remote-as {remote-as} BGP will only advertise networks with an exact match to the network statement. You can advertise a static route with a null destination.

Question 39

Configure BGP with a loopback address

Answer 39

(config)# router bgp {PID} | (config-router)# neighbor {neighbor ip} update-source {interface}

Question 40

Configure eBGP multihop

Answer 40

(config)# router bgp {PID} (config-router{# neighbor {IP address} remote-as {remote-as} (config-router)# neighbor {ip address} ebgp-multihop {#}

Question 41

Create a distribute list outboundthat references a prefix list

Answer 41

(config)#router {protocol} (config-router)# distribute-list prefix {name} out {interface} (config)# ip prefix-list {name} seq {seq} deny {ip address}

Question 42

Use a distribute list that references a route map

Answer 42

(config)# router {protocol} (config-router)# distribute-list route-map {prefix-list} out (config)# route-map {prefix-list} deny {seq #} (config-route-map)# match ip address prefix-list {prefix-list} (config)#route-map {prefix-list} permit {seq #} (config)#ip prefix-list {name} {conditions}

Question 43

Create a default route in BGP

Answer 43

(config)# router bgp {asn}

Question 44

Configure IPv6 EIGRP

Answer 44

(config)# ipv6 unicast-routing (config)# ipv6 router eigrp {ASN} (config-router)# router-id {ipv4-address} (config-router)# no shut (config)# interface {interface} (config-if)# ipv6 eigrp {ASN}

Question 45

Configure MP-BGP

Answer 45

(config)# ipv6 unicast-routing (config)# router bgp {asn} (config-router)# router-id {ip address} (config-router)# neighbor {ipv6 address} remote-as {asn} (config-router)# address-family ipv6 unicast (config-router-af)# neighbor {ipv6 address} activate (config-router-aff)# network {ipv6 address}

Question 46

Configure OSPFv3

Answer 46

``` To Configure OSPFv3: R2(config)# ipv6 unicast-routing ! R2(config)# ipv6 router ospf 100 R2(config-rtr)# router-id 10.10.10.1 R2(config-rtr)# area 1 stub no-summary R2(config-rtr)# exit ! R2(config)# interface gig1/1 R2(config-if)# ipv6 address 2003:2:1:2::1/64 R2(config-if)# ipv6 ospf 100 area 0 ! R2(config)# interface gig1/2 R2(config-if)# ipv6 address 2003:2:1:A::1/64 R2(config-if)# ipv6 ospf 100 area 1 R2(config-if)# ipv6 ospf priority 30 ```