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Exam: | 640-878 - Building Cisco Service Provider Next-Generation Networks, Part 2 (SPNGN2) |
Size: | 2.83 MB |
Posted: | Sunday, October 29, 2017 |
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In lab You must put address-family ipv4 inside neighbor section.
Which two IOS and IOS XR configurations are needed? (Choose two.)
A.
! IOS
interface GigabitEthernet 0/0
ip address 192.0.2.254 255.255.255.0
standby 1 ip 192.0.2.1
standby 1 preempt
standby 2 ip 192.0.2.254
standby 2 preempt
B.
! IOS
interface GigabitEthernet 0/0
ip address 192.0.2.2 255.255.255.0
standby 1 ip 192.0.2.1
standby 1 priority 105
standby 1 preempt
standby 2 ip 192.0.2.254
standby 2 priority 95
standby 2 preempt
C.
! IOS-XR
interface GigabitEthernet 0/0/0/0
ip address 192.0.2.3 255.255.255.0
router hsrp
interface GigabitEthernet 0/0/0/0
hsrp 1 ipv4 192.0.2.1
hsrp 1 priority 95
hsrp 1 preempt
hsrp 2 ipv4 192.0.2.254
hsrp 2 priority 105
hsrp 2 preempt
D.
! IOS-XR
interface GigibitEthernet 0/0/0/0
ip address 192.0.2.1 255.255.255.0
router hsrp
interface GigabitEthernet 0/0/0/0
hsrp 1 ipv4 192.0.2.1
hsrp 1 priority 99
hsrp 1 preempt
hsrp 2 ipv4 192.0.2.254
hsrp 2 priority 101
hsrp 2 preempt
E.
! IOS
interface GigibitEthernet 0/0
ip address 192.0.2.2 255.255.255.0
standby 1 ip 192.0.2.1
standby 1 preempt
standby 1 priority 2
standby 2 ip 192.0.2.254
standby 2 preempt
standby 2 priority 2
F.
! IOS-XR
interface GigabitEthernet 0/0/0/0
ip address 192.0.2.3 255.255.255.0
router hsrp
interface GigabitEthernet 0/0/0/0
hsrp 1 ipv4 192.0.2.1
hsrp 1 priority 1
hsrp 1 preempt
hsrp 2 ipv4 192.0.2.254
hsrp 2 priority 1
hsrp 2 preempt
Why the answer is A and C ?
this packet is matched by the statement 20 of the ACL so it will be permited and will not pass to the statement 30
example The packet isn't telnet packet with destination is 10.10.192.1.
10 is not matched because its isn't telnet packet go to 20.
20 is matched packet is permit go to 30.
30 is matched because any is all IPv4 addresses.
so I think in sequent 30 packet is deny ?
all IPv4 packets from any source to any destination between (10.10.192.0 - 10.10.195.255) are permitted except the telnet packets.
all other packets are droped with the third statement in the ACL
ipv4 access-list FILTER
10 deny tcp any 10.10.192.0 0.0.3.255 eq telnet
20 permit ipv4 any 10.10.192.0 0.0.3.255
30 deny ipv4 any any
What packets are permitted ?
I thought its dropped any packet ?