Hottest Questions This Month

23

votes

7

answers

7k

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Does UDP do anything at all?

modified 1 hour ago cybernard 111

12

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3

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4k

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ip multicast streaming

answered Sep 4 at 22:59 patsw 1

3

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1

answer

278

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ARP Router issue

protocol-theory arp

modified Sep 11 at 19:15 Ron Maupin♦ 82.3k

2

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3

answers

287

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modified Sep 10 at 19:09 Zac67 52.9k

2

votes

2

answers

218

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ethernet speed duplex autonegotiation foundry

modified Sep 13 at 21:10 Ron Maupin♦ 82.3k

2

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3

answers

151

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modified 2 days ago Jesse P. 2,237

1

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3

answers

297

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Routing between completely separate private networks

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answered Sep 1 at 15:45 user2821413 46

1

vote

2

answers

123

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Is this UDP diagram wrong?

protocol-theory networking udp transport-protocol layer4

modified Aug 26 at 13:23 Ron Maupin♦ 82.3k

2

votes

1

answer

96

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Confusion about Route based IPSEC site-site vpn and policy based IPSEC site-site VPN

vpn network ipsec

modified Aug 27 at 19:34 Ron Trunk 53.6k

-1

votes

3

answers

43

views

Confusion about TTL when pinging

ip ipv4 ping icmp ttl

answered Aug 25 at 3:42 Sagar Uragonda 1,270

0

votes

2

answers

35

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ICMP distinguish error messages

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modified 2 days ago Zac67 52.9k

0

votes

4

answers

80

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How common it is to see unknown IPs in logs?

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modified Sep 2 at 8:14 Maik 13

2

votes

2

answers

93

views

What will happen if a server receives a duplicate SYN for an existing connection?

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modified Sep 2 at 1:48 Ron Maupin♦ 82.3k

1

vote

2

answers

54

views

How does the ARP table know to update if two hosts flop IP addreses?

protocol-theory mac-address ip-address arp

modified Sep 13 at 0:02 Ron Maupin♦ 82.3k

0

votes

2

answers

68

views

What could go wrong if I use public IP range for intranet?

lan

answered Aug 24 at 3:08 user242114 11

2

votes

1

answer

67

views

Can modern network equipment handle very large broadcast domains

cisco vlan broadcast

modified Sep 11 at 13:07 Ankit Badani 106

2

votes

1

answer

47

views

Can a QSFP28 port break out to 4 SFP+ ports to separate hosts?

fortigate sfp dell

modified Aug 31 at 21:09 Zac67 52.9k

0

votes

1

answer

36

views

What if receiver changes its IP address during the transmission process?

ip tcp network mac-address mac

modified Sep 9 at 13:14 Jörg W Mittag 440

1

vote

3

answers

76

views

Is there a rigorous difference between a WAN and a LAN?

network

answered Aug 31 at 21:42 Jörg W Mittag 440

1

vote

2

answers

57

views

Intermittent Network Performance Problems

vlan arp performance netgear-prosafe

answered yesterday Dominic Hilsbos 33

0

votes

3

answers

34

views

Is the length header used to indicate the end of a segment?

udp

answered Aug 20 at 22:24 Zac67 52.9k

1

vote

2

answers

56

views

Do X.25/Frame Relay/ATM/MPLS have their own switches?

switching mpls switchport frame-relay atm

answered Sep 7 at 5:26 rnxrx 5,559

2

votes

1

answer

33

views

Junos not automatically advertising an address configured on loopback interface to OSPF

ospf juniper-junos

answered Sep 4 at 14:49 Jordan Head 4,597

1

vote

2

answers

65

views

What device manages VLANs?

cisco router vlan cisco-asa

modified Sep 12 at 15:46 Ron Maupin♦ 82.3k

0

votes

2

answers

59

views

Why does IPv6 NS not use unicast address but multicast

ipv6 networking multicast ndp

modified Aug 29 at 18:26 Ron Maupin♦ 82.3k

0

votes

2

answers

43

views

Migrate from Cisco HSRP gateway to Juniper VRRP Gateway

cisco juniper hsrp vrrp

answered Aug 24 at 23:15 NABEEL NASIR 733

0

votes

2

answers

43

views

Do network encryption devices support KMIP / PKCS#11 for key management, or is it all done using the CLI?

security ipsec sslvpn

modified Sep 14 at 19:49 Marc 'netztier' Luethi 6,803

0

votes

1

answer

43

views

Why does my enterprise issue me a public IP address instead of just a private IP address?

nat ip-address

answered 2 days ago Zac67 52.9k

1

vote

1

answer

67

views

Transponder, Muxponder and OTN vs Direct Optics

optical

modified Aug 29 at 12:30 Jordan Head 4,597

1

vote

2

answers

36

views

MAC address and unicast, multicast and broadcast

protocol-theory mac-address layer2 multicast broadcast

modified Sep 10 at 19:33 Ron Maupin♦ 82.3k

2

votes

1

answer

35

views

what is significance and role and function lifetime in IPSEC Site to Site VPN . Please explain importance and role of lifetime in VPN

vpn network

answered Sep 8 at 19:24 Ron Trunk 53.6k

1

vote

1

answer

57

views

How does “bits per second” relate to wavelength?

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modified Sep 5 at 13:36 Zac67 52.9k

0

votes

1

answer

33

views

When I send the ICMP packet with 4000B, but the IPv4 segment calculated 4008B

wireshark icmp

modified Aug 27 at 6:29 JFL 16.4k

0

votes

1

answer

33

views

Max. patch cable length to connect two switches?

cabling

modified Aug 22 at 14:24 Albin 121

1

vote

1

answer

33

views

Juniper vMX Routers can't ping each other in GNS3

juniper juniper-junos gns3 juniper-mx

answered Sep 12 at 14:51 Jeff Wheeler 2,365

0

votes

2

answers

54

views

Help segmenting/isolate my network with VLANs

vlan security

answered Aug 21 at 16:05 Ron Trunk 53.6k

0

votes

2

answers

42

views

Congestion control in transport and network layers in TCP/IP

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answered Sep 9 at 15:43 Ron Trunk 53.6k

0

votes

2

answers

53

views

NATTing a server address

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modified Sep 5 at 13:28 Zac67 52.9k

0

votes

1

answer

41

views

How is ICMP Packet Too Big handled in IPv6?

ipv6 fragmentation icmpv6

answered Sep 6 at 11:19 Zac67 52.9k

0

votes

2

answers

31

views

what's the window size of TCP pipelined sending

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answered Aug 25 at 3:08 Sagar Uragonda 1,270

2

votes

2

answers

39

views

What if my data contains nothing but Preambles and Start of Frame numbers?

ethernet protocol-theory layer2

modified Sep 13 at 15:40 Ron Maupin♦ 82.3k

0

votes

2

answers

38

views

Connect two Ethernet network devices with fibre cable

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answered Aug 24 at 13:07 Zac67 52.9k

-1

votes

1

answer

36

views

IPv4 and IPv6 Source Address field

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answered Sep 9 at 5:35 Zac67 52.9k

0

votes

2

answers

35

views

Setup IPSEC in Hub/Spoke fashion

cisco ipsec gns3

answered Aug 25 at 23:03 dutsnekcirf 151

2

votes

1

answer

35

views

IPv4 and UDP/TCP packets inside of ICMP packet?

ipv4 tcp network wireshark icmp

answered 2 days ago Ron Maupin♦ 82.3k

1

vote

2

answers

35

views

Using WAN IP for a host instead

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modified yesterday Zac67 52.9k

0

votes

1

answer

35

views

How is a video calls bandwidth reserved on a wifi network?

wireless network ieee-802.11 capwap

modified 8 hours ago Zac67 52.9k

-1

votes

1

answer

44

views

Simulation of a large network by GNS3

gns3

modified Sep 8 at 8:50 Ali Ut 1

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