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NEW QUESTION # 10
A Junos switch boots with a factory-default or zeroized configuration and the ZTP process takes over. Which three statements are correct about this ZTP process? (Choose three.)
Answer: B,C,E
Explanation:
During Zero Touch Provisioning, the switch first uses DHCP to obtain an IP address and provisioning parameters. It can receive software image information through DHCP options and verify or download the specified Junos version if required. It then retrieves and applies the assigned configuration file automatically to complete provisioning.
NEW QUESTION # 11
Click the Exhibit button.
You are reviewing a configuration for an EVPN VLAN-bundle service. The configuration commits successfully, but the hosts connected to the MAC-VRF do not communicate correctly.
Referring to the exhibit, which two actions should you take to solve the problem? (Choose two.)
Answer: A,B
Explanation:
An EVPN VLAN-bundle service requires the routing instance service type to be set to VLAN- bundle so multiple VLANs can be mapped into a single bundled service. VLAN-bundle is a Layer
2 EVPN service and is not meant to have an IRB attached inside the MAC-VRF, so the IRB interface association must be removed to restore correct host-to-host bridging behavior.
NEW QUESTION # 12
Exhibit.
You are troubleshooting a DCI connection to another data center The BGP session to the provider is established, but the session to Border-Leaf-2 is not established. Referring to the exhibit, which configuration change should be made to solve the problem?
Answer: A
Explanation:
* Understanding the Configuration:
* The exhibit shows a BGP configuration on a Border-Leaf device. The BGP group UNDERLAY is used for the underlay network, OVERLAY for EVPN signaling, and PROVIDER for connecting to the provider network.
* The OVERLAY group has the accept-remote-nexthop statement, which is designed to accept the next-hop address learned from the remote peer as is, without modifying it.
* Problem Identification:
* The BGP session to Border-Leaf-2 is not established. A common issue in EVPN-VXLAN environments is related to next-hop reachability, especially when accept-remote-nexthop is configured.
* In typical EVPN-VXLAN setups, the next-hop address should be reachable within the overlay network. However, the accept-remote-nexthop can cause issues if the next-hop IP address is not directly reachable or conflicts with the expected behavior in the overlay.
* Corrective Action:
* D. delete protocols bgp group OVERLAY accept-remote-nexthop:Removing this command will ensure that the device uses its own IP address as the next-hop in BGP advertisements, which is standard practice in many EVPN-VXLAN setups. This change should help establish the BGP session with Border-Leaf-2.
Data Center References:
* Proper handling of BGP next-hop attributes is critical in establishing and maintaining stable BGP sessions, especially in complex multi-fabric environments like EVPN-VXLAN. Removing accept- remote-nexthop aligns with best practices in many scenarios.
NEW QUESTION # 13
An IP fabric with EBGP configured in the overlay uses a different AS number for each node in the fabric.
Which two benefits does this configuration have over using a single AS scheme? (Choose two.)
Answer: C,D
Explanation:
Using a different AS number for each node in an EBGP overlay eliminates the need for route reflectors since EBGP inherently prefers routes learned from external ASes over internal routes, ensuring efficient route propagation without additional configuration. This setup also enhances BGP path selection by leveraging AS_PATH attributes to prevent routing loops and ensure optimal traffic flow across the fabric.
NEW QUESTION # 14
Exhibit.
You want to enable the border leaf device to send Type 5 routes of local networks to the border leaf device in another data center. What must be changed to the configuration shown in the exhibit to satisfy this requirement?
Answer: C
Explanation:
In this scenario, you want the border leaf device to advertise Type 5 EVPN routes to another border leaf in a different data center. Type 5 routes in EVPN are used to advertise IP prefixes, which means that for proper route advertisement, you need to configure the correct settings within the evpn hierarchy.
Step-by-Step Analysis:
* Understanding EVPN Type 5 Routes:
* EVPN Type 5 routes are used to advertise IP prefixes across EVPN instances, which allow different data centers or networks to exchange routing information effectively.
* VRF Target Setting:
* The vrf-target configuration is crucial because it defines the export and import policies for the VRF within the EVPN instance. For EVPN Type 5 routes to be advertised to other border leaf devices, the vrf-target needs to be correctly configured under the evpn hierarchy, not just within the routing instance.
Command to solve this:
move vrf-target target:65000:1 to evpn
* Other Options:
* Option B:Adding a VLAN configuration would not address the requirement to advertise Type 5 routes.
* Option C:Adding VXLAN encapsulation may be necessary for other scenarios but does not directly address the Type 5 route advertisement.
* Option D:Changing the route-distinguisher will differentiate routes but does not impact the advertisement of Type 5 routes to other data centers.
By moving the vrf-target to the evpn hierarchy, you enable the proper route advertisement, ensuring that the Type 5 routes for local networks are shared with other data center border leaf devices. This is aligned with best practices for multi-data center EVPN implementations, which emphasize the correct placement of routing policies within the EVPN configuration.
NEW QUESTION # 15
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