EMC D-SNC-DY-00 Dell SONiC Deploy Exam Exam Practice Test

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

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

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.

Dell SONiC Management Interface Configuration:

In Dell SONiC, the management port configuration is a crucial aspect that allows administrators to access and manage the network device.

The management interface typically provides out-of-band management access to the device, ensuring that even if the data network is down, the management network can still be accessed.

Common Interface Naming Conventions:

mgmt 1/1/1: This naming convention is not typically used in Dell SONiC environments for management interfaces.

ma 0/1: This could be a potential naming convention but is not standard for Dell SONiC.

Management 0: This is a logical name but does not align with the standard interface naming conventions used in Dell SONiC.

eth0: This is the standard naming convention used for the primary management interface in most Linux-based systems, including Dell SONiC.

Verification with Dell SONiC Documentation:

Dell SONiC documentation specifies that the management interface is usually named eth0.

When accessing the management interface within the MF-CLI (Management Framework Command Line Interface) environment, eth0 is the correct interface to configure.

Practical Configuration Example:

When configuring the management port, the command might look something like:

config interface ip add eth0 /

This command specifies the management interface eth0 and assigns it an IP address for network management purposes.

References:

Dell Enterprise SONiC Deployment Guide

Dell Technologies Networking - SONiC

This detailed step-by-step explanation confirms that the correct answer is D, providing insights into the typical interface naming conventions and configuration practices within the Dell SONiC environment.

ZTP (Zero Touch Provisioning) is used to automate the configuration of switches, especially useful in scenarios where a failed unit needs to be replaced. By using ZTP, the switch can automatically download and apply the necessary configuration scripts upon boot-up, reducing the need for manual intervention and speeding up the deployment process.

References:

Dell Technologies SONiC documentation

Zero Touch Provisioning Guide

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

Enterprise SONiC can be upgraded or downgraded using:

Boot Loader (A): The boot loader can be used to select and load different versions of the SONiC firmware.

GRUB (D): GRUB (Grand Unified Bootloader) is another method used to manage and select different SONiC firmware versions during system boot-up.

References:

Dell Technologies SONiC documentation

SONiC Upgrade Guide

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.

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.

Here are the steps to configure the peer link on SwitchA:

Enter Configuration Mode:

SwitchA# configure terminal

Create VLAN 101:

SwitchA(config)# vlan 101

Create Port-Channel 100:

SwitchA(config)# interface port-channel 100

SwitchA(config-if-po100)# switchport mode trunk

SwitchA(config-if-po100)# switchport trunk allowed vlan 101

SwitchA(config-if-po100)# exit

Assign Physical Interfaces to Port-Channel 100:

SwitchA(config)# interface ethernet 1/5

SwitchA(config-if-eth1/5)# channel-group 100 mode active

SwitchA(config-if-eth1/5)# exit

SwitchA(config)# interface ethernet 1/6

SwitchA(config-if-eth1/6)# channel-group 100 mode active

SwitchA(config-if-eth1/6)# exit

Configure MC-LAG Domain 1:

SwitchA(config)# mclag domain 1

SwitchA(config-mclag-domain)# peer-link port-channel 100

SwitchA(config-mclag-domain)# local-ip 192.168.1.1

SwitchA(config-mclag-domain)# peer-ip 192.168.1.2

SwitchA(config-mclag-domain)# system-mac 00:00:00:11:11:11

SwitchA(config-mclag-domain)# exit

Save Configuration:

SwitchA# write memory

Comprehensive Detailed Step by Step Explanation with References:

Enter Configuration Mode:

Begin by entering the global configuration mode to make changes to the switch configuration.

Create VLAN 101:

Create VLAN 101 to be used for the MC-LAG peer link communication.

Create Port-Channel 100:

Enter the port channel interface configuration mode using interface port-channel 100.

Set the port channel to trunk mode with switchport mode trunk.

Allow VLAN 101 on the trunk with switchport trunk allowed vlan 101.

Exit the port channel interface configuration mode.

Assign Physical Interfaces to Port-Channel 100:

Enter interface configuration mode for ethernet 1/5 and assign it to port channel 100 using the channel-group 100 mode active command.

Exit the interface configuration mode.

Repeat the same steps for ethernet 1/6.

Configure MC-LAG Domain 1:

Enter the MC-LAG domain configuration mode using mclag domain 1.

Specify the peer link port channel with peer-link port-channel 100.

Configure the local IP address as 192.168.1.1 using local-ip 192.168.1.1.

Configure the peer IP address as 192.168.1.2 using peer-ip 192.168.1.2.

Set the MC-LAG system MAC address using system-mac 00:00:00:11:11:11.

Exit the MC-LAG domain configuration mode.

Save Configuration:

Save the configuration to ensure the changes persist 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 the peer link for an MC-LAG scenario on SwitchA, ensuring the specific requirements for IP addressing, VLAN configuration, and port channel setup are met.

Here are the steps to configure the required VLAN translations on a Dell SONiC switch:

Map a Single-Tagged CVLAN 100 to SVLAN 200 on Interface Eth1/1:

sonic# configure terminal

sonic(config)# interface Ethernet1/1

sonic(config-if-Ethernet1/1)# switchport mode trunk

sonic(config-if-Ethernet1/1)# switchport vlan mapping 100 200

sonic(config-if-Ethernet1/1)# end

sonic# write memory

Map a Double-Tagged VLAN Packet with Outer CVLAN 100 and Inner dot1q 200 to SVLAN 300 on Interface Eth1/2:

sonic# configure terminal

sonic(config)# interface Ethernet1/2

sonic(config-if-Ethernet1/2)# switchport mode trunk

sonic(config-if-Ethernet1/2)# switchport vlan mapping 100 200 300

sonic(config-if-Ethernet1/2)# end

sonic# write memory

Comprehensive Detailed Step by Step Explanation with References:

Enter Configuration Mode:

Access the global configuration mode using the configure terminal command.

Configure Interface Eth1/1:

Enter interface configuration mode for Ethernet1/1 using the command interface Ethernet1/1.

Set the switchport mode to trunk with the command switchport mode trunk.

Configure the VLAN translation using the switchport vlan mapping 100 200 command, which maps CVLAN 100 to SVLAN 200.

Exit the interface configuration mode by typing end.

Save the configuration with write memory.

Configure Interface Eth1/2:

Enter interface configuration mode for Ethernet1/2 using the command interface Ethernet1/2.

Set the switchport mode to trunk with the command switchport mode trunk.

Configure the double-tagged VLAN translation using the switchport vlan mapping 100 200 300 command, which maps packets with outer CVLAN 100 and inner dot1q 200 to SVLAN 300.

Exit the interface configuration mode by typing end.

Save the configuration with write memory.

References:

Dell Technologies Networking - SONiC

Dell Enterprise SONiC Deployment Guide

These steps provide a comprehensive guide to configure VLAN translations on a Dell SONiC switch, ensuring that the specific requirements for single-tagged and double-tagged VLAN mappings are met.

Here are the steps to create the VTEP and map the VNI to the VLAN:

Enter Configuration Mode:

SwitchA# configure terminal

Create VTEP Interface:

SwitchA(config)# interface vtep1

SwitchA(config-if-vtep1)# ip address 10.10.10.1/24

SwitchA(config-if-vtep1)# exit

Map VNI 400 to VLAN 40:

SwitchA(config)# vlan 40

SwitchA(config-vlan)# vn-segment 400

SwitchA(config-vlan)# exit

Enable ARP Neighbor Suppression:

SwitchA(config)# interface Vlan40

SwitchA(config-if-Vlan40)# ip address 192.168.40.254/24

SwitchA(config-if-Vlan40)# vxlan arp-suppression

SwitchA(config-if-Vlan40)# exit

Save Configuration:

SwitchA# write memory

Enter Configuration Mode:

Begin by entering the global configuration mode to make changes to the switch configuration.

Create VTEP Interface:

Enter the interface configuration mode for the VTEP interface named vtep1 using interface vtep1.

Assign the IP address 10.10.10.1/24 to the VTEP interface using the ip address command.

Exit the interface configuration mode.

Map VNI 400 to VLAN 40:

Enter the VLAN configuration mode for VLAN 40 using vlan 40.

Map the VNI 400 to VLAN 40 using the vn-segment 400 command.

Exit the VLAN configuration mode.

Enable ARP Neighbor Suppression:

Enter the interface configuration mode for VLAN 40 using interface Vlan40.

Assign the anycast IP address 192.168.40.254/24 to the VLAN interface using the ip address command.

Enable ARP neighbor suppression using the vxlan arp-suppression command.

Exit the interface configuration mode.

Save Configuration:

Save the configuration to ensure the changes persist 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 VTEP and map the VNI to VLAN 40 on Switch A, ensuring the specific requirements for IP addressing and ARP neighbor suppression are met.

Here are the steps to configure the VRF and the static route:

Enter Configuration Mode:

sonic# configure terminal

Create VRF "VrfGreen":

sonic(config)# ip vrf VrfGreen

Configure the Static Route:

sonic(config)# ip route vrf VrfGreen 172.16.128.64/28 10.10.10.1 213

Save Configuration:

sonic# write memory

Comprehensive Detailed Step by Step Explanation with References:

Enter Configuration Mode:

Begin by entering the global configuration mode to make changes to the switch configuration.

Create VRF "VrfGreen":

Use the command ip vrf VrfGreen to create a new VRF named "VrfGreen". This command sets up a new VRF instance which will isolate the routing table for this VRF from the global routing table and other VRFs.

Configure the Static Route:

Use the command ip route vrf VrfGreen 172.16.128.64/28 10.10.10.1 213 to configure the static route.

ip route vrf VrfGreen specifies that the route should be added to the "VrfGreen" VRF.

172.16.128.64/28 is the destination network.

10.10.10.1 is the next-hop IP address.

213 is the administrative distance, which in this case is set to a non-default value to influence route preference.

Save Configuration:

Save the configuration to ensure the changes persist 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 VRF and a static route within that VRF on a SONiC-based switch, ensuring the specific requirements for routing and administrative distance are met.