Which statement is correct about member interfaces when creating a LAG?
Answer(s): B
When creating a LAG (Link Aggregation Group) in Junos, the duplex settings and link speed must be the same across all member interfaces.Step-by-Step Breakdown:LAG Overview:A LAG combines multiple physical interfaces into a single logical interface to increase bandwidth and provide redundancy. All member links must act as a single cohesive unit.Interface Requirements:Duplex: All member interfaces must operate in the same duplex mode (either full-duplex or half- duplex). Mismatched duplex settings can cause performance issues, packet drops, or interface errors. Link Speed: All interfaces in the LAG must have the same link speed (e.g., all interfaces must be 1 Gbps or 10 Gbps). Mismatched speeds would prevent the interfaces from functioning correctly within the LAG.Configuration and Validation: Ensure that all member interfaces have identical settings before adding them to the LAG. These settings can be checked using the show interfaces command, and the LAGcan be configured using:set interfaces ae0 aggregated-ether-options link-speed 10g set interfaces ge-0/0/1 ether-options 802.3ad ae0Juniper
LAG Configuration: Duplex and link speed must be consistent across member interfaces to ensure proper LAG operation in Juniper devices.
Which three actions are required to implement filter-based forwarding? (Choose three.)
Answer(s): A,C,E
Filter-Based Forwarding (FBF) in Junos OS allows traffic to be routed based on specific criteria such as source address, rather than just the destination address. This is useful in scenarios like policy routing or providing multiple paths for different types of traffic.Step-by-Step Breakdown:Instance-Type Forwarding:You must create an instance-type forwarding routing instance. This routing instance allows for different routing tables based on the incoming packet filter.Command:set routing-instances FBF-instance instance-type forwarding Match Filter:You need to create a filter to match the traffic that will be forwarded according to your custom routing policy. This filter is applied to an interface to determine which traffic will use the custom forwarding instance.Command Example:set firewall family inet filter FBF-filter term 1 from source-address <address> set firewall family inet filter FBF-filter term 1 then routing-instance FBF-instance RIB Group:A RIB (Routing Information Base) group is necessary to share routes between the primary routing table and the custom routing instance. This allows FBF traffic to use the routing information from other routing tables.Command Example:set routing-options rib-groups FBF-group import-rib inet.0 set routing-instances FBF-instance routing-options rib-group FBF-groupJuniper
FBF Configuration: Filter-based forwarding requires these specific steps to redirect traffic to a custom routing table based on filter criteria.
Which signaling protocol is used for EVPN?
Answer(s): D
EVPN (Ethernet Virtual Private Network) is a standard protocol used for building Layer 2 and Layer 3 VPNs over an IP or MPLS network. The signaling protocol used for EVPN is BGP (Border Gateway Protocol).Step-by-Step Breakdown:BGP as the EVPN Signaling Protocol:EVPN uses BGP to exchange MAC address reachability information between routers (PE devices). This enables devices to learn which MAC addresses are reachable through which PE devices, facilitating Layer 2 forwarding across an IP or MPLS core.BGP Extensions for EVPN:BGP is extended with new address families (e.g., EVPN NLRI) to carry both MAC and IP address information, allowing for scalable and efficient multi-tenant network solutions.Juniper
Junos EVPN Configuration: Juniper uses BGP as the control plane for EVPN to exchange MAC and IP route information between different data center devices.
Which operation mode command will display the mapping between the VLAN ID and ports on a switch?
To display the mapping between VLAN IDs and ports on a Juniper switch, the show vlans command is used.Step-by-Step Breakdown:VLAN Information:The show vlans command displays detailed information about VLAN configurations, including the VLAN ID, associated interfaces (ports), and VLAN membership.Command Example:show vlansThis command will provide an output listing each VLAN, its ID, and the interfaces associated with the VLAN, enabling network engineers to quickly verify VLAN to port mappings.Juniper
VLAN Verification: Use the show vlans command to verify which VLANs are configured on the switch and the ports that are members of those VLANs.
Within your router, you want to verify that you are learning routes from a remote BGP peer at IP address 10.10.100.1. Which command would satisfy the requirement?
Answer(s): A
To verify that your router is learning routes from a remote BGP peer at a specific IP address (e.g., 10.10.100.1), the correct command to use is show route receive-protocol bgp.Step-by-Step Breakdown:BGP Route Learning:The show route receive-protocol bgp command displays the routes that have been received from a specified BGP peer. This helps in confirming that the remote peer is sending routes correctly and that your router is receiving them.Command Example:show route receive-protocol bgp 10.10.100.1This will show all routes that have been received from the BGP peer with IP address 10.10.100.1.Juniper
BGP Route Verification: Use this command to troubleshoot and verify that routes from a specific BGP peer are being received.
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