Hottest Questions This Month

7 votes

6 answers

2k views

How Does A Layer 2 Switch Differentiate Between Different Networks?

Zac67♦

69.5k

modified May 6 at 18:23

7 votes

3 answers

649 views

Can I announce the same block of /24 given to me by ARIN at two different locations?

cisco routing bgp remote

Matija Nalis

160

answered May 5 at 21:57

3 votes

5 answers

155 views

Why should I use vlans instead of subnets?

vlan subnet networking

Ronnie Royston

4,058

answered May 14 at 1:08

2 votes

4 answers

117 views

How does ARP work, when the host with known MAC address is moved to another subnet

networking arp

jonathanjo

15.9k

modified May 2 at 20:18

1 vote

1 answer

315 views

MAC address table and frame forwarding on Layer 2 switches - question about when two computers are connected via hub to same switch port

cisco switch ethernet

manish ma

1,402

modified Apr 26 at 13:51

1 vote

2 answers

76 views

Why shortened version of IP4 exists and it is undocumented but supported everywhere?

ip ipv4 network subnet ip-address

M. Behrens

66

answered May 16 at 18:34

0 votes

2 answers

67 views

Difference between default routes

route

Zac67♦

69.5k

modified May 12 at 19:46

0 votes

3 answers

119 views

Do telephone calls work at Layer2?

wireless switching layer2 layer1 telephony

Alok Maity

346

modified Apr 26 at 8:48

1 vote

3 answers

58 views

Why switch uses Mac address during implementation of spanning tree protocol (STP)?

switching mac-address layer2 spanning-tree switchport

Zac67♦

69.5k

modified Apr 24 at 15:47

0 votes

2 answers

70 views

UDP supports multicasting and broadcasting in transport layer or application layer?

tcp multicast udp transport-protocol layer4

Zac67♦

69.5k

modified Apr 20 at 11:43

1 vote

3 answers

56 views

Why the host part of a Mask is 254 (256-2) instead of 253?

ip

Zac67♦

69.5k

modified Apr 27 at 6:59

0 votes

2 answers

53 views

Which access methods and topologies are used for 10/40/100 Giga Ethernet?

ethernet topology

Zac67♦

69.5k

modified Apr 30 at 13:23

0 votes

3 answers

68 views

Are WAN and "backbone" same?

networking wan

Zac67♦

69.5k

modified Apr 28 at 20:11

0 votes

1 answer

70 views

How to create a subnet or secondary network? Do I need VLANs?

vlan network subnet

Zac67♦

69.5k

modified May 11 at 15:09

2 votes

1 answer

53 views

How is the destination MAC address filled during MPLS label switching?

arp mpls

Ron Trunk

62k

answered May 4 at 18:46

2 votes

1 answer

49 views

Ethernet: How does receiver know end of frame? [duplicate]

ethernet layer2

Zac67♦

69.5k

modified May 1 at 10:02

0 votes

1 answer

60 views

Why is this 254.63.0.1, not a valid host address?

ip subnet ip-address

Zac67♦

69.5k

modified Apr 28 at 6:34

3 votes

1 answer

44 views

Two multicasts from same source not reaching a destination

cisco multicast

John Moffitt

165

modified May 10 at 16:32

0 votes

2 answers

72 views

If coaxial is half duplex, how come it's that fast?

duplex

Zac67♦

69.5k

modified Apr 29 at 15:46

0 votes

1 answer

56 views

Cisco BGP Configuration

cisco bgp

tcpipee

1

modified Apr 22 at 17:36

0 votes

1 answer

37 views

What is this coupler for?

ethernet

Zac67♦

69.5k

modified May 15 at 8:01

2 votes

2 answers

37 views

Why is a PoE circuit limited to 328 feet?

ethernet networking power-over-ethernet utp

Ronnie Royston

4,058

modified yesterday

0 votes

1 answer

33 views

How can i create this topology in cisco packet tracer?

cisco packet-tracer

Zac67♦

69.5k

modified May 10 at 13:36

1 vote

1 answer

32 views

show ip ospf neighbor unexpected results On packet Tracer

cisco packet-tracer

Ron Trunk

62k

modified Apr 27 at 17:54

1 vote

1 answer

43 views

How to configure a router as a dhcp server for vlans throught a Layer 3 switch?

cisco dhcp packet-tracer

Ron Maupin♦

92.8k

answered Apr 24 at 1:21

1 vote

1 answer

55 views

Why iBGP speaker should not modify next hop address?

routing bgp networking

manish ma

1,402

modified May 9 at 6:09

2 votes

0 answers

54 views

Cisco Access Switches: Monitoring AAA server dead via SNMP?

cisco cisco-ios snmp radius aaa

Marc 'netztier' Luethi

7,636

modified Apr 27 at 11:50

1 vote

2 answers

32 views

Do PoE lighting systems require a separate network from other PoE systems?

networking power-over-ethernet

Ronnie Royston

4,058

modified yesterday

0 votes

1 answer

40 views

Which interface will be the root port in this topology?

spanning-tree

Zac67♦

69.5k

modified Apr 23 at 11:43

0 votes

1 answer

24 views

Does OSPF acknowledge DBD packets with an LSAck?

ospf

Zac67♦

69.5k

modified May 10 at 10:28

0 votes

1 answer

30 views

VLAN trunking - how to ping PC4 from PC1?

vlan packet-tracer trunk

Ron Trunk

62k

modified May 16 at 13:26

0 votes

1 answer

23 views

QOS - CPU CoS Weight- pluribus switches

switch qos cos

Tayto

1

modified 2 days ago

0 votes

1 answer

48 views

How to configure a layer 3 switch for routing vlans?

cisco routing vlan

Ron Trunk

62k

answered Apr 24 at 21:13

0 votes

1 answer

46 views

TCP segment with flags ACK, PSH, URG

tcp firewall

Zac67♦

69.5k

modified May 11 at 6:18

1 vote

1 answer

35 views

Need help with create Vlan for radios

cisco

Ron Maupin♦

92.8k

answered Apr 22 at 0:54

0 votes

1 answer

35 views

In an SDN (OpenFlow), are all switches directly connected to controller?

network networking sdn openflow

Ron Trunk

62k

answered Apr 29 at 18:59

0 votes

1 answer

27 views

Will this switch do what I require?

switch

Zac67♦

69.5k

answered May 16 at 7:20

0 votes

2 answers

21 views

IPSEC ESP tunnel mode - Are the ip addresses in outer IP HDR same as addresses in inner encrypted IP HDR?

vpn security ipsec

Zac67♦

69.5k

modified May 16 at 16:39

0 votes

1 answer

33 views

Switch stack with only one

switch dell

Zac67♦

69.5k

modified Apr 29 at 16:02

0 votes

1 answer

42 views

Relation between mean delay and network size

wireless ad-hoc-wireless

Zac67♦

69.5k

answered Apr 28 at 11:43

0 votes

1 answer

30 views

Switch with 100Mbit and 1Gbit ports - using its full capacity

switch ethernet speed

Zac67♦

69.5k

answered Apr 27 at 16:08

0 votes

1 answer

35 views

Wireshark: Cannot find frame type of packets

ieee-802.11 wireshark packet-analysis

Zac67♦

69.5k

modified Apr 24 at 10:59

0 votes

1 answer

34 views

Network packet loss and connection drop every hour [closed]

cisco-catalyst wireshark packet-loss palo-alto

Zac67♦

69.5k

answered 2 days ago

0 votes

1 answer

33 views

HTTP and TCP relationship

tcp layer4 osi

Zac67♦

69.5k

answered 2 days ago

0 votes

1 answer

25 views

Show LLDP neighbors history

switch aruba lldp

Zac67♦

69.5k

answered May 5 at 5:51

1 vote

1 answer

25 views

How to change the source port without interrupt the TCP connection? [closed]

tcp linux port-forwarding

Ron Maupin♦

92.8k

answered Apr 29 at 12:33

0 votes

2 answers

25 views

Extreme 210 fiber port not connecting

network networking fiber

Mike

113

answered 6 mins ago

0 votes

2 answers

15 views

Simple IPv6 Global Unicast question

ip networking ipv6 ip-address prefix

Ron Maupin♦

92.8k

modified 5 hours ago

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