[Q10-Q32] Certification Training for D-SNC-DY-00 Exam Dumps Test Engine [2024]

In a symmetric Integrated Routing and Bridging (IRB) overlay network, the Source Virtual Tunnel End Point (VTEP) and the Destination VTEP route unencapsulated user traffic. Symmetric IRB ensures that routing occurs at both the ingress and egress VTEPs, allowing for optimized traffic flow and efficient network operations.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide

The ztp enable command is used to administratively enable the Zero Touch Provisioning (ZTP) process on the switch. This process allows the switch to automatically download and apply configuration files upon boot-up without manual intervention. The show ztp status command is used to check on the progress and status of the ZTP process, providing information about whether the process is active, completed, or encountered any issues.
References:
* Dell Technologies SONiC documentation
* Dell Networking Configuration Guide

To route traffic from voice servers to a dedicated Internet link, the following steps are necessary:
* Create an ACL that selects IPs of voice servers (B): This ACL will match the traffic coming from the specified IP addresses of the voice servers.
* Create a policy-map and attach the configured class-map and set the next-hop IP (D): The policy-map will use the class-map to identify the voice server traffic and then set the next-hop IP for routing.
* Attach a policy to the egress interface (C): The policy-map must be applied to the egress interface to ensure that the traffic is routed correctly.
References:
* Dell SONiC QoS Configuration Guide
* Dell Technologies InfoHub
Feel free to refer to the Dell SONiC documentation and Dell Technologies InfoHub for more detailed explanations and additional context.

The show vlan command displays all configured VLANs on the device, including their status, ports, and other relevant details. It does not limit the display to only active VLANs or all possible VLANs but shows those that are currently configured.
References:
* Dell Technologies SONiC Command Reference Guide
* Dell Networking Configuration Guide

Entering the qos-mode uniform command on a VTEP interface ensures that the DSCP (Differentiated Services Code Point) value of the payload is copied to the outer header DSCP value. This maintains the Quality of Service (QoS) markings across the VXLAN tunnel, allowing consistent traffic prioritization.
References:
* Dell Technologies SONiC documentation
* VXLAN and QoS Configuration Guide

The exhibit shows a BGP EVPN route in a VXLAN environment. The route type can be determined based on the details provided. Type 2 routes in BGP EVPN are used to advertise MAC address reachability information between VTEPs (Virtual Tunnel End Points). The exhibit indicates a host route from another VTEP, which corresponds to a Type 2 route.
References:
* Dell Technologies SONiC documentation
* BGP EVPN Configuration Guide

The static route shown in the exhibit S* 12.0.0.0/16 via 192.168.45.254 Vlan45 is used to provide a route to the 12.0.0.0 network. This static route directs traffic destined for the 12.0.0.0/16 network through the gateway at 192.168.45.254, which is associated with VLAN 45. This configuration is typically used to ensure that traffic can reach a specific network via a defined path.
References:
* Dell Technologies SONiC Routing Guide
* Dell Networking Configuration Guide

* Network Topology Analysis:
* PC1 is on VLAN 10 with an IP address in the 192.168.10.0/24 subnet.
* PC2 is on VLAN 20 with an IP address in the 192.168.20.0/24 subnet.
* The network uses OSPF for routing between the switches.
* The OSPF area is 0, and all switches have loopback interfaces for OSPF.
* Routing Table Examination (from switch1):
* The show ip route command output from switch1 provides a detailed look at the routing table.
* Routes to the 192.168.10.0/24 network (directly connected via Vlan10) are present.
* No routes to the 192.168.20.0/24 network are listed in switch1’s routing table.
* Explanation:
* For PC1 to communicate with PC2, switch1 must have a route to the 192.168.20.0/24 network.
* The absence of a route to the 192.168.20.0/24 network in switch1’s routing table means that switch1 cannot forward packets destined for 192.168.20.0/24.
* Therefore, any ping from PC1 to PC2 will be unsuccessful as switch1 does not know how to route packets to PC2’s network.
* Verification with Dell SONiC:
* In Dell SONiC environments, OSPF is configured to ensure dynamic routing.
* The configuration must include all necessary networks for inter-switch routing.
* If a network (like 192.168.20.0/24) is not included in OSPF configurations on switch1, routes to that network will not be advertised or learned, leading to failed connectivity tests like the ping from PC1 to PC2.
References:
* Dell Enterprise SONiC Deployment Guide
* Dell Technologies Networking – SONiC

Explanation:
* Ingress VTEP performs a route lookup that is based on the destination IP address.
* Ingress VTEP encapsulates the packet with VXLAN and sends it on the appropriate VNI segment.
* Egress VTEP determines that the host is local to the VNI and switches the packet.
* Egress VTEP bridges the packet after decapsulation.
Steps and Correct Order:
* Ingress VTEP performs a route lookup that is based on the destination IP address.
* The ingress VTEP (Virtual Tunnel Endpoint) first needs to determine the next hop for the packet.
This involves performing a route lookup using the destination IP address.
* Ingress VTEP encapsulates the packet with VXLAN and sends it on the appropriate VNI segment.
* Once the route lookup is complete, the ingress VTEP encapsulates the packet in a VXLAN header, which includes the appropriate VNI (VXLAN Network Identifier) segment, and forwards it.
* Egress VTEP determines that the host is local to the VNI and switches the packet.
* The egress VTEP receives the encapsulated VXLAN packet, decapsulates it, and then checks its local VNI to determine if the destination host is within the same VNI.
* Egress VTEP bridges the packet after decapsulation.
* After determining the destination host’s locality, the egress VTEP bridges the packet to the appropriate interface to deliver it to the final destination.
References:
* Dell Technologies Networking – SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to understand the correct order of operations in asymmetric IRB (Integrated Routing and Bridging) frame encapsulation within a VXLAN environment.

Route maps in Enterprise SONIC are used for controlling and modifying routing information. They contain a series of commands with matching criteria and actions. The permit or deny clause within route maps determines whether the matching routes are permitted or denied from being redistributed.
References:
* Dell Technologies SONiC Route Map Configuration Guide
* Dell Networking Configuration Guide

In a symmetric Integrated Routing and Bridging (IRB) overlay network, the Source Virtual Tunnel End Point (VTEP) and the Destination VTEP route unencapsulated user traffic. Symmetric IRB ensures that routing occurs at both the ingress and egress VTEPs, allowing for optimized traffic flow and efficient network operations.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide

The command interface vxlan vtep-stacking followed by map vni 10010 vlan 100 maps the VLAN traffic that an SVLAN identifies to a VNI on a VTEP. In this context, SVLAN (Service VLAN) is being mapped to a VXLAN Network Identifier (VNI) for encapsulation and transport across the VXLAN tunnel.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide

see the explanation for all step by step solution with all explanation.
Explanation:
Here is the step-by-step configuration for R1:
* Enter BGP Configuration Mode:
R1# configure terminal
R1(config)# router bgp 1
* Configure the BGP Neighbor:
R1(config-router)# neighbor 10.10.12.2 remote-as 2
* Redistribute Connected Routes into BGP:
R1(config-router)# redistribute connected
* Exit BGP Configuration Mode and Save the Configuration:
R1(config-router)# end
R1# write memory
Comprehensive Detailed Step by Step Explanation with References:
* Enter BGP Configuration Mode:
* To configure BGP on R1, you need to enter global configuration mode and then enter BGP
* configuration mode with the AS number. Since R1 is in AS 1, you use the command router bgp 1.
* Configure the BGP Neighbor:
* BGP neighbors must be manually specified. In this case, R1’s neighbor is R2, which has an IP address of 10.10.12.2 and resides in AS 2. The command neighbor 10.10.12.2 remote-as 2 establishes this relationship.
* Redistribute Connected Routes into BGP:
* To ensure that all connected routes on R1 are advertised via BGP, you use the redistribute connected command. This ensures that any connected IPv4 routes are redistributed into BGP, meeting the requirement to advertise current and future connected routes.
* Exit BGP Configuration Mode and Save the Configuration:
* Once the configuration is complete, you exit BGP configuration mode by typing end and then save the configuration with the write memory command. This ensures that the changes persist after a reboot.
References:
* Cisco BGP Configuration Guide
* Dell Technologies Networking – SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to configure R1 to meet the specified requirements for BGP peering and route redistribution.

An iBGP (Internal Border Gateway Protocol) neighbor relationship is established between two BGP routers within the same autonomous system (AS). This relationship allows for the exchange of routing information within the AS, ensuring that internal routes are propagated correctly.
References:
* Dell Technologies SONiC Routing Guide
* BGP Configuration Guide

see the explanation for all step by step solution with all explanation.
Explanation:
Here are the steps to configure the required port channel and VLAN settings on Switch A:
* Enter Configuration Mode:
SwitchA# configure terminal
* Create Port Channel 10:
SwitchA(config)# interface port-channel 10
SwitchA(config-if-po10)# switchport mode trunk
SwitchA(config-if-po10)# switchport trunk native vlan 1
SwitchA(config-if-po10)# switchport trunk allowed vlan 1,10
* Assign Interfaces Eth 1/11 and Eth 1/12 to Port Channel 10:
SwitchA(config)# interface ethernet 1/11
SwitchA(config-if-eth1/11)# channel-group 10 mode active
SwitchA(config-if-eth1/11)# exit
SwitchA(config)# interface ethernet 1/12
SwitchA(config-if-eth1/12)# channel-group 10 mode active
SwitchA(config-if-eth1/12)# exit
* Configure Interface Eth 1/1 for Server Connection:
SwitchA(config)# interface ethernet 1/1
SwitchA(config-if-eth1/1)# switchport mode trunk
SwitchA(config-if-eth1/1)# switchport trunk native vlan 1
SwitchA(config-if-eth1/1)# switchport trunk allowed vlan 1,10
SwitchA(config-if-eth1/1)# end
* Save Configuration:
SwitchA# write memory
Comprehensive Detailed Step by Step Explanation with References:
* Enter Configuration Mode:
* Start by entering the global configuration mode to make changes to the switch configuration.
* Create Port Channel 10:
* Enter the port channel interface configuration mode using interface port-channel 10.
* Set the port channel to trunk mode with switchport mode trunk.
* Specify VLAN 1 as the native VLAN (untagged) using switchport trunk native vlan 1.
* Allow VLANs 1 and 10 on the trunk with switchport trunk allowed vlan 1,10.
* Assign Interfaces Eth 1/11 and Eth 1/12 to Port Channel 10:
* Enter interface configuration mode for ethernet 1/11 and ethernet 1/12.
* Assign each interface to port channel 10 using the channel-group 10 mode active command.
* Exit the interface configuration mode.
* Configure Interface Eth 1/1 for Server Connection:
* Enter interface configuration mode for ethernet 1/1.
* Set the interface to trunk mode with switchport mode trunk.
* Specify VLAN 1 as the native VLAN using switchport trunk native vlan 1.
* Allow VLANs 1 and 10 on the trunk with switchport trunk allowed vlan 1,10.
* Exit the configuration mode.
* Save Configuration:
* Ensure the configuration is saved so it persists after a reboot using the write memory command.
References:
* Dell Technologies Networking – SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to configure a port channel and VLAN settings on Switch A to meet the specified requirements for server and trunk connections.

Each port-group on the S5200 series switches consists of 4 ports. This grouping allows for efficient management and configuration of the switch ports in sets.
References:
* Dell S5200 Series Switches Documentation
* Dell Technologies InfoHub

The output of the command show qos wred-policy pfc34 shows the ECN (Explicit Congestion Notification) configuration for the policy pfc34. The line ecn: ecn_all indicates that ECN is enabled for all traffic classes (all DSCP values). Additionally, the green-min-threshold, green-max-threshold, and green-drop-probability settings are shown, but there is no indication of a 10% probability for marking traffic as congested. Therefore, the correct answer is B.
References:
* Dell Enterprise SONiC documentation
* Dell Technologies InfoHub

From the exhibit, it is evident that Eth1/56 on SONiC-2 is assigned a link-local IPv6 address (fe80::e7d:8aff:fecb
/64). Link-local addresses are not routable beyond the local network segment, which means they cannot be used to route traffic between SONiC-1 and SONiC-2. For routed links, global unicast addresses must be used.
References:
* Dell Technologies SONiC documentation
* IPv6 Addressing Guide