Pass4Future also provide interactive practice exam software for preparing Juniper Service Provider Routing and Switching, Professional (JN0-664) Exam effectively. You are welcome to explore sample free Juniper JN0-664 Exam questions below and also try Juniper JN0-664 Exam practice test software.
Do you know that you can access more real Juniper JN0-664 exam questions via Premium Access? ()
Your organization manages a Layer 3 VPN for multiple customers To support advanced route than one BGP community on advertised VPN routes to remote PE routers.
Which routing-instance configuration parameter would support this requirement?
Answer : C
The vrf-target export parameter is used to specify one or more BGP extended community attributes that are attached to VPN routes when they are exported from a VRF routing instance to remote PE routers. This parameter allows you to control which VPN routes are accepted by remote PE routers based on their import policies. You can specify more than one vrf-target export value for a VRF routing instance to support advanced route filtering or route leaking scenarios.
Exhibit
A network designer would like to create a summary route as shown in the exhibit, but the configuration is not working.
Which three configuration changes will create a summary route? (Choose three.)
Answer : B, C, D
To create a summary route for IS-IS, you need to configure a policy statement that matches the prefixes to be summarized and sets the next-hop to discard. You also need to configure a summary-address statement under the IS-IS protocol hierarchy that references the policy statement. In this case, the policy statement leak-v6 is trying to match the prefix 2001:db9:a:fa00::/61 exactly, but this prefix is not advertised by any router in the network. Therefore, no summary route is created. To fix this, you need to delete the longer keyword from the route-filter term and change the prefix length to /61 exact. This will match any prefix that falls within the /61 range. You also need to delete the export statement under protocols isis, because this will export all routes that match the policy statement to other IS-IS routers, which is not desired for a summary route.
Exhibit
Referring to the exhibit, which two statements are true? (Choose two.)
Answer : B, C
This is an EVPN Type-2 route, also called a MAC/IP advertisement route, that is used to advertise host IP and MAC address information to other VTEPs in an EVPN network. The route type field in the EVPN NLRI has a value of 2, indicating a Type-2 route. The device advertising this route into EVPN is 192.168.101.5, which is the IP address of the VTEP that learned the host information from the local CE device. This IP address is carried in the MPLS label field of the route as part of the VXLAN encapsulation.
Exhibit
You want Site 1 to access three VLANs that are located in Site 2 and Site 3 The customer-facing interface on the PE-1 router is configured for Ethernet-VLAN encapsulation.
What is the minimum number of L2VPN routing instances to be configured to accomplish this task?
Answer : B
To allow Site 1 to access three VLANs that are located in Site 2 and Site 3, you need to configure three L2VPN routing instances on PE-1, one for each VLAN. Each L2VPN routing instance will have a different VLAN ID and a different VNI for VXLAN encapsulation. Each L2VPN routing instance will also have a different vrf-target export value to identify which VPN routes belong to which VLAN. This way, PE-1 can forward traffic from Site 1 to Site 2 and Site 3 based on the VLAN tags and VNIs.
Refer to the exhibit.
Click the Exhibit button.
After adding Customer C to your Layer 3 VPN, you must ensure that PE2 is receiving VPN routes for all customers attached to PE1, as shown in the exhibit.
Which operational command displays this information?
Answer : A
In the context of Layer 3 VPNs (L3VPN) using MPLS, the routing information for different customers (VPNs) is typically stored in separate routing tables (VRFs). When you want to verify that PE2 is receiving the VPN routes for Customer C from PE1, you need to check the appropriate VRF routing table on PE2.
1. **Option A: show route table customer-c.inet.0**
- This command displays the routing table specific to Customer C's VRF.
- Since we want to verify that PE2 has received the VPN routes for Customer C, this is the most appropriate command to use.
- It allows us to see all routes learned for Customer C's VPN.
2. **Option B: show route table bgp.l3vpn.0**
- This command displays the BGP routing table for all L3VPN routes.
- While this includes routes for Customer C, it also includes routes for all other VPNs, making it harder to isolate the specific information for Customer C.
- This command is more useful for an overall view of BGP L3VPN routes rather than for a specific customer's VRF.
3. **Option C: show route summary**
- This command provides a summary of the routes in all routing tables.
- It doesn't give detailed information about the specific routes for Customer C's VRF.
- It's useful for a high-level overview but not for verifying specific customer routes.
4. **Option D: show route table inet.0**
- This command shows the global routing table, not the VRF-specific tables.
- The global routing table doesn't contain the VPN-specific routes that are stored in the VRF tables.
- Therefore, it won't help in verifying the routes for Customer C.
**Conclusion**:
To verify that PE2 is receiving VPN routes for Customer C from PE1, the most appropriate command is to check the specific VRF routing table for Customer C. Hence, the correct answer is:
**A. show route table customer-c.inet.0**
**Reference**:
- Junos OS documentation on MPLS VPNs: [Junos MPLS VPNs Guide](https://www.juniper.net/documentation/en_US/junos/topics/topic-map/mpls-vpns.html)
- Command Reference for Routing Tables: [Junos OS Routing Tables Command Reference](https://www.juniper.net/documentation/en_US/junos/topics/reference/command-summary/show-route-table.html)
