All Questions
45
questions
1
vote
1
answer
139
views
Are integrated networking devices, frequently called routers, of the switch type or of a router / NIC type?
Odom,Wendell-_CCNA_200-301_Official_Cert_Guide,_Volume_1.pdf :
many SOHO Ethernet LANs today combine the router and switch into a single device. Vendors sell consumer-grade
integrated networking ...
- 113
1
vote
1
answer
102
views
How can I use two WiFi routers with one cable to the ISP router?
Let me explain...
There is the fiber optic ISP router on the first floor, connected to it via LAN cable is a switch, connected to the switch via LAN cable is a WiFi router on the 7th.
I want to add ...
- 11
1
vote
1
answer
575
views
GNS3 can not ping from ethernet interface to serial interface
So I am doing a Lab for one of my classes involving ipv6 and routing using EIGRP. When I set-up the network and assign the router interfaces with IPV6 address I get an issue pinging the whole network. ...
0
votes
1
answer
64
views
Routers FastEthernet interface clock autonegotiation protocol
In routers, for serial interfaces, we need to manually set the clock at the DCE router so that the ends of the connection can communicate. I know that in this way we are using time-division ...
- 103
1
vote
2
answers
570
views
How do routers. switches, bridges and hubs deal with corrupted data?
By data corruption I mean frame/packet corruption, we can stick to the corruption due to a collision for simplicity.
I know that switches can detect frame corruption if they are not set to cut-...
- 155
5
votes
5
answers
5k
views
How does a host in one subnet know to forward the packet to the router MAC, when trying to send a packet to another subnet
I am trying to understand the ARP protocol and I could not understand the above. Consider the topology as follows:
H1(1.1.1.1) - (1.1.1.0)R(2.2.2.0) - H2(2.2.2.2)
My understanding is that if the ...
- 59
-1
votes
1
answer
127
views
MAc address or IP address? which one gets used from my pc to router? [duplicate]
Question 1) which one is used nowadays? NAT or PAT?
Question 2) as I knew, when my pc requests some website, what happens is , the data(packets) from my pc go to router. then router makes the request ...
- 103
1
vote
0
answers
387
views
How Cisco Line Protocol works
How do Cisco Line Protocol works ?
I could read this: https://www.cisco.com/c/en/us/support/docs/content-networking/keepalives/118390-technote-keepalive-00.html, about Ethernet Interfaces keepalive ...
- 1,085
4
votes
2
answers
2k
views
How many pps (64Byte each) i can receive in 1Gbps throughput modem / firewall
I need help with this:
If i have 1Gb/s throughput.
I can receive how many pps in 64Byte each packet / s?
Let's say I can send (Packet / Second - 64Byte) 450,000, meaning I would not only have 230.4 ...
- 143
0
votes
1
answer
645
views
If physical switches are necessary in a SDN
Exploring how to implement a Software Defined Network and here it explains that an SDN switch is only dealing with the data layer. But then:
Do We Need Special SDN Switches for SDN Networking?
...
- 107
6
votes
2
answers
495
views
How to connect a special device in a network
I have a question which is puzzling me.
I have a couple of custom electronic devices (are identical, one is a master and the other is a slave) which implement only up to level 2 of the ISO/OSI layer, ...
- 61
8
votes
2
answers
19k
views
What's the difference between Ethernet link and Serial link?
Sometimes we see router connected use Ethernet link, sometimes use Serial link, what's the difference between them? and in what scenario we use them?
- 339
3
votes
1
answer
4k
views
Data link layer acknowledgement
I'm confused with some concepts please help me out,
Data link layer manage flow control hop to hop. Flow control requires acknowledgement receiving but If we observe data link layer header, it does ...
- 31
7
votes
1
answer
4k
views
Do we send ack frames in ethernet? if not then how does a router know if its neighbors are down or not?
So first off, do ethernet sends ack frames or not?
if it doesn't : then how does a router know whether its neighbors are down or not?
if it does : then is it cumulative ack with an ack timer or one ...
- 531
13
votes
2
answers
8k
views
Is the MTU of Ethernet still 1500 Bytes?
So basically do the modern routers in the internet still use 1500 as the MTU of Ethernet? or the 1500 Byte was for the old days?
What I'm asking here is what is the MTU of Ethernet in modern Networks?...
- 531