Free Cisco 300-410 Practice Exam with Questions & Answers | Set: 2

VPNv4 address consists of 64-bit Route Distinguisher (RD) prepended to IPv4 prefix. This is to

make routes unique that are in different VRFs.

https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/vpn/65x/b-l3vpn-cg-ncs5500-65x/b-l3vpn-cg-ncs5500-65x_chapter_010.html

The ingress PE router must be able to reach the egress PE router for a packet to be relayed to its destination.

A label edge router (LER, also known as edge LSR) is a router that operates at the edge of an MPLS network and acts as the entry and exit points for the network. LERs push an MPLS label onto an incoming packet and pop it off an outgoing packet.

vty 0:

+ cisco

+ 0csic

vty 1:

+ no username

+ no password

The command “aaa authentication login default none” means no authentication is required when

access to the device via Console/VTY/AUX so if one interface does not specify another login

authentication method (via the “login authentication …” command), it will allow to access

without requiring username or password. In this case VTY 1 does not specify another

authentication login method so it will use the default method (which is “none” in this case).

The AD of static route is manually configured to 130 which is higher than the AD of OSPF router which is 110.

Unmonitored: Unmonitored devices are devices for which Assurance did not receive any

telemetry data during the specified time range.

In order to use a prefix-list in a route-map, we must use the keyword “prefix-list” in the “match”

statement. . For example:

match ip address prefix-list WAN_PREFIXES

Without this keyword, the router will try to find an access-list with the same name instead.

MPLS Network Protocols

+ IGP: OSPF, EIGRP, IS-IS on core facing and core links+ RSVP and/or LDP on core and/or core facing links ->

+ MP-iBGP on PE devices (for MPLS services), MP-BGP: Multiprotocol Border Gateway Protocol, used for MPLS L3 VPN -> .

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/122_55_se/configuration/guide/scg3750/swv6acl.html

Let’s see how the “logging synchronous” command affect the typing command:

Without this command, a message may pop up and you may not know what you typed if that

message is too long. When trying to erase (backspace) your command, you realize you are

erasing the message instead.

With this command enabled, when a message pops up you will be put to a new line with your

typing command which is very

There is an implicit deny all at the end of any route-map so all other traffic that does not match 172.20.5.0/24 would be dropped. Therefore we have to add a permitsequence at the end of the route-map to allow other traffic.

The default value of Local Preference is 100 and higher value is preferred so we have to set the local preference of AS100 lower than that of AS200.

Overview of the IPv6 First-Hop Security Binding Table

A database table of IPv6 neighbors connected to the device is created from information sources such as NDP snooping. This database, or binding table, is used by variousIPv6 guard features to validate the link-layer address (LLA), the IPv4 or IPv6 address, and the prefix binding of the neighbors to prevent spoofing and redirect attacks.

IPv6 First-Hop Security Binding Table Recovery MechanismThe IPv6 first-hop security binding table recovery mechanism enables the binding table to recover in the event of a device reboot.