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TTL value in MPLS determines the maximum number of hops a packet can take before being discarded.
TTL value is decremented by 1 at each hop in the MPLS network
If TTL reaches 0, the packet is discarded
TTL prevents packets from circulating indefinitely in case of routing loops
TTL value can be set by the sender and modified by routers along the path
ACLs are used to control traffic flow by filtering packets based on defined criteria. They can be implemented on line vty to secure management traffic.
ACLs can be created to permit or deny traffic based on source/destination IP address, port numbers, or protocols
To secure management traffic on line vty, an ACL can be applied to restrict access to specific IP addresses or ranges
For example, to allow only a specific...
Traceroute is a network diagnostic tool used to track the path packets take from one networked device to another.
Traceroute sends packets with increasing TTL values to elicit ICMP Time Exceeded responses from each router along the path.
The IP addresses of the routers and round-trip times are displayed to show the route taken by the packets.
Traceroute helps identify network issues such as packet loss, latency, and ...
The two components of a VPNv4 address are the VPN route distinguisher and the IPv4 address.
VPN route distinguisher is used to uniquely identify VPN routes within a provider network
IPv4 address is the actual IP address used for routing within the VPN
Example: RD:100:1 and IPv4 address: 192.168.1.1
VXLAN encapsulates Layer 2 traffic in Layer 3 packets for transport over an IP network. ACI fabric uses VXLAN to provide network virtualization.
VXLAN encapsulates Layer 2 traffic in Layer 3 packets
VXLAN uses a 24-bit identifier called a VXLAN Network Identifier (VNI) to identify the virtual network
ACI fabric uses VXLAN to provide network virtualization
ACI fabric uses a spine-leaf architecture for packet forwarding
...
VPC is a virtual private cloud that allows you to create a private network in the cloud. Traffic can flow from VPC to non-VPC environment via VPN or Direct Connect.
VPC allows you to create a private network in the cloud
VPC can be connected to on-premises data centers via VPN or Direct Connect
Traffic can flow from VPC to non-VPC environment via VPN or Direct Connect
Traceroute is a network diagnostic tool used to track the path packets take from one networked device to another.
Traceroute sends packets with increasing TTL values to elicit ICMP Time Exceeded responses from each router along the path.
The IP addresses of the routers and round-trip times are displayed to show the route taken by the packets.
Traceroute helps identify network issues such as packet loss, latency, and routi...
TTL value in MPLS determines the maximum number of hops a packet can take before being discarded.
TTL value is decremented by 1 at each hop in the MPLS network
If TTL reaches 0, the packet is discarded
TTL prevents packets from circulating indefinitely in case of routing loops
TTL value can be set by the sender and modified by routers along the path
The two components of a VPNv4 address are the VPN route distinguisher and the IPv4 address.
VPN route distinguisher is used to uniquely identify VPN routes within a provider network
IPv4 address is the actual IP address used for routing within the VPN
Example: RD:100:1 and IPv4 address: 192.168.1.1
ACLs are used to control traffic flow by filtering packets based on defined criteria. They can be implemented on line vty to secure management traffic.
ACLs can be created to permit or deny traffic based on source/destination IP address, port numbers, or protocols
To secure management traffic on line vty, an ACL can be applied to restrict access to specific IP addresses or ranges
For example, to allow only a specific IP a...
I applied via Naukri.com and was interviewed in Dec 2019. There were 4 interview rounds.
VPC is a virtual private cloud that allows you to create a private network in the cloud. Traffic can flow from VPC to non-VPC environment via VPN or Direct Connect.
VPC allows you to create a private network in the cloud
VPC can be connected to on-premises data centers via VPN or Direct Connect
Traffic can flow from VPC to non-VPC environment via VPN or Direct Connect
VXLAN encapsulates Layer 2 traffic in Layer 3 packets for transport over an IP network. ACI fabric uses VXLAN to provide network virtualization.
VXLAN encapsulates Layer 2 traffic in Layer 3 packets
VXLAN uses a 24-bit identifier called a VXLAN Network Identifier (VNI) to identify the virtual network
ACI fabric uses VXLAN to provide network virtualization
ACI fabric uses a spine-leaf architecture for packet forwarding
In AC...
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