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NEW QUESTION # 163
You are attempting to configure the initial two aggregated Ethernet interfaces on a router but there are no aggregated Ethernet interfaces available.
In this scenario, which configuration will enable these interfaces on this router?
Answer: D
Explanation:
Explanation
The correct answer to your question is
Option C shows the configuration of the statement, which defines the properties of the router chassis, such as the number of aggregated Ethernet interfaces, the number of FPCs, and the number of PICs1.
To enable aggregated Ethernet interfaces on a router, you need to specify the aggregated-devices statement under the chassis parameter to the desired number of interfaces2. For example, to enable two aggregated Ethernet interfaces, you can use the following configuration:
chassis { aggregated-devices { ethernet { device-count 2; } } }
Option C shows this configuration with the device-count set to 2, which will enable two aggregated Ethernet interfaces on the router. The other options do not show this configuration and will not enable any aggregated Ethernet interfaces on the router.
Therefore, option C is the correct answer to your question.
NEW QUESTION # 164
Exhibit
You have configured a GRE tunnel. To reduce the risk of dropping traffic, you have configured a keepalive OAM probe to monitor the state of the tunnel; however, traffic drops are still occurring.
Referring to the exhibit, what is the problem?
Answer: D
Explanation:
A keepalive OAM probe is a mechanism that can be used to monitor the state of a GRE tunnel and detect any failures in the tunnel path. A keepalive OAM probe consists of sending periodic packets from one end of the tunnel to the other and expecting a reply. If no reply is received within a specified time, the tunnel is considered down and the line protocol of the tunnel interface is changed to down 1 .
To configure a keepalive OAM probe for a GRE tunnel, you need to specify two parameters: the keepalive- time and the hold-time. The keepalive-time is the interval between each keepalive packet sent by the local router. The hold-time is the maximum time that the local router waits for a reply from the remote router before declaring the tunnel down 2 .
According to the Juniper Networks documentation, the hold-time value must be two times the keepalive-time value for a GRE tunnel 2 . This is because the hold-time value must account for both the round-trip time of the keepalive packet and the processing time of the remote router. If the hold-time value is too small, it may cause false positives and unnecessary tunnel flaps.
In the exhibit, the configuration shows that the keepalive-time is set to 10 seconds and the hold-time is set to
15 seconds for the gr-1/1/10.1 interface. This means that the local router will send a keepalive packet every 10 seconds and will wait for 15 seconds for a reply from the remote router. However, this hold-time value is not two times the keepalive-time value, which violates the recommended configuration. This may cause traffic drops if the remote router takes longer than 15 seconds to reply.
Therefore, option D is correct, because the hold-time value must be two times the keepalive-time value for a GRE tunnel. Option A is incorrect, because BFD is not required for GRE tunnels; BFD is another protocol that can be used to monitor tunnels, but it is not compatible with GRE keepalives 3 . Option B is incorrect, because the "event link-adjacency-loss" option is not related to GRE tunnels; it is an option that can be used to trigger an action when a link goes down 4 . Option C is incorrect, because LLDP does not need to be removed from the gr-1/1/10.1 interface; LLDP is a protocol that can be used to discover neighboring devices and their capabilities, but it does not interfere with GRE tunnels 5 .
References:
1 : Configuring Keepalive Time and Hold time for a GRE Tunnel Interface 2 : keepalive | Junos OS | Juniper Networks 3 : Configuring Bidirectional Forwarding Detection 4 : event link-adjacency-loss | Junos OS | Juniper Networks 5 : Understanding Link Layer Discovery Protocol
NEW QUESTION # 165
You are receiving multiple BGP routes from an upstream neighbor and only want to advertise a single summarized prefix to your internal OSPF neighbors. This route should only be advertised when you are receiving these BGP routes from this neighbor.
In this scenario, which type of route should you create?
Answer: D
Explanation:
Explanation
In this scenario, you should create an 1. Aggregate routes are used for advertising summarized network prefixes1. They help minimize the number of routing tables in an IP network by consolidating selected multiple routes into a single route advertisement1. This approach is in contrast to non-aggregation routing, in which every routing table contains a unique entry for each route1.
Therefore, option A is correct. Options B, C, and D are not correct because:
Static route using the resolve feature: This type of route uses the resolve feature to install a static route in the routing table only if a specific condition is met1. However, it does not provide the capability to summarize multiple routes into a single prefix.
Generate route: This type of route generates a route that is always present in the routing table and can be used to summarize routes. However, it does not have the capability to only advertise the route when specific BGP routes are being received from a neighbor1.
Static route using qualified next hops: This type of route allows for the specification of multiple next-hop addresses for a static route1. However, it does not provide the capability to summarize multiple routes into a single prefix.
NEW QUESTION # 166
Which two statements are correct about VRRP? (Choose two.)
Answer: B,D
Explanation:
The virtual IP address must match on all participating devices - All routers in the same VRRP group must be configured with the same virtual IP address to provide redundancy.
The VRRP group number must match on all participating devices - All routers in the same VRRP group must have the same group number to identify the VRRP group.
NEW QUESTION # 167
You want to verify prefix information being sent from 10.36.1.4.
Which two statements are correct about the output shown in the exhibit? (Choose two.)
Answer: A,C
Explanation:
The AS path attribute shows AS numbers (e.g., 65401 65520.), indicating the route's traversal through one or various autonomous systems.
The output displays the selected routes and the attributes with which they were received, but does not show the effects of import policy on the routing attributes.
Nothing indicates that the routes have been received from an IBGP peer. The asterisks only indicates whether the routes have been imported into the routing table (RIB) after the application of the import policies.
https://www.juniper.net/documentation/us/en/software/junos/cli-
reference/topics/ref/command/show-route-receive-protocol.html
NEW QUESTION # 168
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