A network automation engineer needs to retrieve the BGP neighbor operational state from a Cisco router running IOS-XR using NETCONF. The engineer wants to filter the request to only get information for the neighbor with the IP address '192.0.2.2'. Which XML snippet represents the correct NETCONF filter to use with a ` ` operation to achieve this specific request, based on the Cisco-IOS-XR-ipv4-bgp-oper YANG model?
A service provider offers Carrier Supporting Carrier (CSC) services. A customer carrier (Carrier B) is peering with the backbone carrier (Carrier A). Carrier B wants to run MPLS within its own network and transport its labeled VPN traffic across Carrier A's backbone. Which two protocols or features are essential on the PE routers of the backbone carrier (Carrier A) to support this CSC model? (Select TWO)
True or False: In a standard MPLS L3VPN deployment, the BGP Extended Community 'SoO' (Site of Origin) is primarily used to prevent routing loops when a customer site is dual-homed to two different PE routers.
A service provider is deploying a multicast VPN (mVPN) solution using NG-mVPN with mLDP as the transport protocol. An engineer is troubleshooting an issue where a customer receiver in VRF 'CUST_A' is not receiving a multicast stream from a source in the same VRF. The P-tunnel status is up. Which command on a PE router is most effective for verifying that the customer's PIM join message is being correctly mapped to an upstream mLDP label for transport across the provider core?
A financial services company, 'FinSecure', is migrating its legacy VPLS services to a more scalable EVPN-MPLS solution. A key requirement is to prevent Layer 2 loops and control broadcast, unknown unicast, and multicast (BUM) traffic flooding between different segments of the same EVI. The network topology consists of a central hub site and multiple spoke sites. Spoke sites should be able to communicate with the hub but not directly with each other at Layer 2. Which EVPN feature must be implemented to meet this specific requirement?
A consultant is designing a QoS policy for a service provider network that uses MPLS. The provider wants to ensure that customer IP Precedence markings are preserved and used for queuing decisions within the MPLS core, but they do not want to trust the full DSCP value. The provider has standardized on mapping IP Precedence values directly to MPLS EXP bits. Which QoS configuration model should be implemented on the ingress PE routers?
During the implementation of BGP FlowSpec on an IOS-XR router to mitigate a DDoS attack, a network operator defines a FlowSpec rule to drop traffic destined for a specific victim IP. The operator applies the service policy to the BGP process. However, the malicious traffic is still reaching the destination. What is a critical missing configuration step required to activate BGP FlowSpec traffic filtering on the router's data plane?
A service provider is configuring IS-IS in a large, multi-level network. To improve scalability and reduce the size of the Link-State Database (LSDB) on Level 1 routers, the network architect decides to use route summarization at the L1/L2 border. The following command is configured on the L1/L2 router: `summary-address 10.10.0.0 255.255.0.0 level-1` What is the effect of this command on the IS-IS operation?
## Case Study: GlobalTrans Logistics MPLS Network Upgrade **Company Background:** GlobalTrans Logistics is a worldwide shipping and logistics company that operates a large private MPLS network connecting its regional headquarters, distribution centers, and major port facilities. The network is built on Cisco hardware and currently uses LDP for label distribution and OSPF as the IGP. The network is divided into three major geographical regions: North America (NA), Europe (EU), and Asia-Pacific (APAC), each running as a separate OSPF Area 0, interconnected via an Inter-AS MPLS backbone. **Current Situation:** The company is experiencing significant growth, leading to increased traffic and more complex application requirements. The current network design is facing challenges with traffic engineering and meeting strict SLAs for latency-sensitive applications like real-time cargo tracking and automated port machinery control. The network operations team finds it difficult to steer specific traffic types over non-default paths to avoid congestion. They are also preparing to deploy 5G services at their smart port facilities, which will require network slicing capabilities. **Requirements:** 1. **Traffic Engineering:** Implement a solution that allows for granular, policy-based traffic steering for critical applications without the complexity of a full-mesh of RSVP-TE tunnels. 2. **Scalability:** The new solution must be highly scalable and simplify the control plane, reducing the protocol state that needs to be maintained on core routers. 3. **Future-Proofing:** The architecture must provide a clear path towards network slicing and service function chaining for future 5G and IoT deployments. 4. **Simplified Operations:** Reduce the operational overhead associated with path management and provisioning. **Problem:** As the lead network architect, you are tasked with recommending a core technology upgrade to meet these requirements. The solution must integrate with the existing MPLS data plane and OSPF IGP with minimal disruption. Which solution best addresses all of GlobalTrans's requirements?