JN0-102 · Question #88
You have two IP addresses configured on the ge-0/0/6 interface, as shown in the exhibit. You want to select the 172.16.10.101 address as the source address for packets sent from this interface to host
The correct answer is A. preferred. To ensure a specific IP address is used as the source for outgoing packets on a multi-addressed Junos interface, configure it as the preferred address.
Question
You have two IP addresses configured on the ge-0/0/6 interface, as shown in the exhibit. You want to select the 172.16.10.101 address as the source address for packets sent from this interface to hosts on a remote subnet. [edit interfaces ge-0/0/6] user@router# show { familyinet { address 172.16.10.100/24; address 172.16.10.101/24; } } Which parameter would you add to the 172.16.10.101 address to complete this task?
Options
- Apreferred
- Bbroadcast
- Cprimary
- Darp 172.16.10.101
How the community answered
(31 responses)- A84% (26)
- B3% (1)
- C3% (1)
- D10% (3)
Why each option
To ensure a specific IP address is used as the source for outgoing packets on a multi-addressed Junos interface, configure it as the `preferred` address.
The `preferred` parameter configures a specific IP address on an interface to be the preferred source address for locally generated packets originating from that interface, if no other policy dictates otherwise.
The `broadcast` parameter defines the broadcast address for the subnet, not for selecting a source IP.
The `primary` parameter designates an address as the primary address, typically for system services, but it doesn't guarantee it will be the source for all outgoing packets over a preferred address.
The `arp` parameter is used for static ARP entries, not for selecting a source IP address on the interface itself.
Concept tested: Junos interface address preference
Source: https://www.juniper.net/documentation/us/en/software/junos/routing-interfaces/topics/topic-map/interfaces-logical-address-properties.html
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