Questions tagged [packet-path]
Use this tag for questions about the life of a packet *within a switch, router, or firewall chassis*. Do not use this tag for questions about traceroute, or traffic engineering.
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Steps involved for packet transit from Router Ingress to Router Egress interface
I am looking to better understand, what happens within the router when an L3 packet arrives at a router interface and egresses via the exit interface.
For e.g consider the below,
assume Hundred Gig 3/...
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Why is MPLS label added between layer 2 header and layer 3 header of OSI model and not between headers of layer 3 and 4 of OSI model?
Is there a possibility to use any other two OSI model layers' middle positions? What is the basic concept of switching of packets with MPLS on layer 2.5 of OSI Reference model?
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How lsp-ping works with php in picture?
If my understanding is correct, lsp-ping will have destination IP addresses set to loopback address(127.0.0.x), to force the label switching of the packet and thus checking the LSP connectivity.
When ...
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Mobile cellular Networks (GSM, LTE, 5G, ...) and MAC addresses
We've been provided with a new firmware for our telematics units, which connects to the Internet via a VPN provided by a mobile carrier; since this new firmware release, we've noticed that each and ...
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Total delay of virtual circuit switching? [closed]
We know that virtual circuit switching(VCS) has both features of circuit switching and datagram switching. It uses connection oriented path but may or may not dedicated that means resources may or may ...
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pathping command 100% packet loss
this is the real example of pathping command.
According to my knowledge:-
Source to here column :- it tells about number of packet loss out of 100 send directly to hop
Node/Link column. :- it tells ...
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Message switching vs packet switching with respect to congestion traffic
Packet switching uses store and forward technique to forward packet. And message switching is also uses store and forward technique to forward message. But in packet switching data transfer faces ...
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ISDN, DSL, Circuit Switching and Package Switching [duplicate]
I need a bit of help to clarify the above-mentioned terms. From my reading, I can see that both ISDN and DSL are used over telephone copper lines. However, ISDN is associated with circuit switching ...
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IP router not forward the packets it receives [closed]
I have been searching for a answer to this and have not found a definite conclusion. Everything seems to suggest
In what cases may an IP router not forward the packets it receives?
My guess which ...
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Transmission and propagation delays
I am now working through book "Computer Networking - A Top Down Approach", and there is one question among others after the first chapter:
"Consider two hosts, A and B, connected by a ...
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Do using proxies and surfing the internet create multiple headers in the packet? [closed]
Apologies for these silly questions. As I am new to networking.
For example, If I configured my browser to use proxy of IP address: a.b.c.d and my IP address: e.f.g.h.
And I visit example.com. What ...
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How BGP guarantees same route for a forwarded packet?
In BGP all routers choose the best route to a single destination. So for Router A and destination D, A will forward the packet to the next-hop router (let us say router R) after knowing the best route ...
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Is datagram switching only possible with routers?
So datagram switching is when packets from same original message travel different paths from source to destination. This cannot happen with switches because switches would just run STP thus ...
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How is Ethernet a packet-switched network?
Let's say for example there is an Ethernet switch, and there are four PCs connected to this switch. PC1 and PC2 are communicating with each other, and at the same time PC3 and PC4 are also ...
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Is a new Frame created between Routers and also Hosts
Trying to understand how frames are structured between hosts and routers. My basic understanding is that a new frame is required to encapsulate a packet from each router.
Example being, if you have ...
