Hottest Questions This Month

16

votes

2

answers

3k

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What is this device used by a networking technology company?

modified Aug 27 at 16:08 Zac67 63.4k

5

votes

3

answers

2k

views

Why can PPPoE connect to a gateway which is not in the same subnet

network

modified Sep 9 at 9:08 Zac67 63.4k

1

vote

2

answers

1k

views

How is UDP used in multimedia system inspite of being connectionless

tcp networking udp transport-protocol layer4

modified Sep 11 at 10:15 Zac67 63.4k

3

votes

6

answers

109

views

Why does STP choose the lowest bridge ID as the root bridge?

spanning-tree bridge topology

modified Sep 8 at 17:45 Ron Trunk 59.2k

2

votes

2

answers

320

views

In tunneling, how destination routers identify if a packet is encapsulated?

router network networking tunnel

modified yesterday Zac67 63.4k

3

votes

2

answers

144

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Why can IPv4 and IPv6 use strict source routing(in options field) and flow label respectively inspite of connectionless protocol?

ip ipv4 ipv6 networking ip-address

modified Sep 8 at 19:07 Effie 421

4

votes

1

answer

144

views

Correct ACL rules to isolate WiFi traffic from other VLANs?

vlan acl dell powerconnect

modified Sep 2 at 3:32 Zac67 63.4k

1

vote

2

answers

152

views

IOS Memory allocation error after ping

cisco router cisco-ios

modified 2 days ago Ricky 28.3k

0

votes

2

answers

64

views

Why router can't be used for converting different model of network but gateway can do this?

router ip tcp layer3 osi

modified 3 hours ago Zac67 63.4k

1

vote

3

answers

92

views

Router interface on same subnet

router network subnet traffic

modified Sep 7 at 21:04 Effie 421

0

votes

3

answers

55

views

If person A has a network 123.123.123 and person B has a network 123.123, what happens if they both assign an IP to a device of 123.123.123.123?

routing subnet ip-address

modified 2 days ago Ron Trunk 59.2k

0

votes

3

answers

77

views

Why does using a /27 bit mask cause an error?

cisco

modified yesterday Zac67 63.4k

0

votes

2

answers

92

views

Why does OSPF use flooding despite using multicast?

routing router ospf layer3 multicast

modified yesterday Effie 421

0

votes

2

answers

101

views

Is knowing MAC needed for talking to another device in same wifi network?

mac-address ieee-802.11 arp

modified Aug 29 at 14:27 Zac67 63.4k

1

vote

2

answers

46

views

Ping a host on the same network with special IP 0.0.0.0/8

ipv4

answered Aug 23 at 14:03 Ron Maupin♦ 89.5k

0

votes

1

answer

35

views

Does a router that only has one connection to a switch with four connection have three interfaces in total?

routing switch

answered Sep 9 at 15:26 Ron Trunk 59.2k

0

votes

2

answers

95

views

Message switching vs packet switching with respect to congestion traffic

switch switching packet-path switching-modes

modified Sep 9 at 16:59 Alok Maity 126

3

votes

1

answer

69

views

What is SLIP good for? [closed]

ip ppp

modified Sep 10 at 12:37 Zac67 63.4k

0

votes

2

answers

53

views

The difference between data frame and BPDU in STP

spanning-tree topology

modified Sep 8 at 10:13 Effie 421

2

votes

2

answers

41

views

VLAN enumeration best practice [closed]

vlan best-practices

modified 2 days ago Jesse P. 3,458

3

votes

1

answer

67

views

why can a router make two PCs in different subnets access each other?

router network subnet

answered Sep 6 at 19:00 Ron Maupin♦ 89.5k

0

votes

2

answers

66

views

Is it possible for TCP can accept out of order segments?

ipv4 tcp ipv6 ip-address transport-protocol

modified Sep 8 at 14:28 Alok Maity 126

0

votes

2

answers

50

views

Are ethernet connections trackable? [closed]

ethernet

answered Aug 28 at 6:32 Jörg W Mittag 592

0

votes

1

answer

57

views

How to tell if an ipv4 address is public or private?

ipv4 network networking ip-address

modified Sep 14 at 7:08 Zac67 63.4k

1

vote

2

answers

91

views

Can I delete the /var/rundb/private directory?

juniper juniper-junos

modified Aug 23 at 14:33 Jordan Head 6,271

0

votes

2

answers

55

views

How in Distance vector routing one router communicates adjacent router through broadcast address and OSPF uses unicast with another?

routing router ospf layer3

modified 2 days ago Effie 421

0

votes

3

answers

52

views

Why client will send a RESET when it is closed state?

tcp networking layer4

modified 12 hours ago Effie 421

-1

votes

2

answers

50

views

why can't my PCs ping each other?

routing network rip

modified Sep 11 at 22:16 Effie 421

0

votes

2

answers

48

views

How is IP address assigned to physical location

ip ip-address

answered Sep 3 at 1:03 Peter Green 11k

0

votes

2

answers

48

views

Are duplicate sequence numbers from different TCP-connections possible?

tcp network

answered Aug 26 at 19:19 Ricky 28.3k

1

vote

1

answer

61

views

Site-to-Site VPN with Sophos XG using tunnel interface

vpn ipsec tunnel site-to-site sophos

modified Aug 30 at 21:33 Zac67 63.4k

0

votes

1

answer

36

views

Can Public IP's ISP location be different from owner organization location?

ip-address

answered 2 days ago JFL 17.5k

0

votes

2

answers

59

views

Switch with VLAN: How to map between VLANs networks

routing switch vlan bridging

modified Sep 13 at 11:26 Zac67 63.4k

-1

votes

1

answer

57

views

Why the pseudo-header is not transmitted with the UDP datagram?

ipv4 tcp udp layer4

answered Sep 12 at 9:43 Zac67 63.4k

0

votes

2

answers

56

views

RSTP Separation

router ieee-802.1w ieee-802.1s

modified Aug 26 at 20:17 Ricky 28.3k

0

votes

2

answers

54

views

CSMA/CD: minimum frame size for Fast Ethernet and Gigabit Ethernet

ethernet half-duplex

modified Aug 25 at 21:31 Zac67 63.4k

1

vote

1

answer

67

views

Are IPv4 type of service and IPv6 traffic class equivalent to each other or is traffic class IPv6 specific? [duplicate]

ipv4 ipv6 networking layer3 packet-tracer

modified 2 days ago Effie 421

1

vote

2

answers

29

views

Do routers overwrite options of IP packets?

ipv4 security

answered Sep 5 at 14:10 Zac67 63.4k

0

votes

1

answer

45

views

Why UDP checksum is optional for IPv4?

ipv4 ip-address udp layer4 checksum

modified Sep 14 at 11:49 Zac67 63.4k

1

vote

1

answer

35

views

What's the procedure to limit a subnet on a Cisco router from seeing another subnet when both are using NAT?

router nat networking acl

modified Sep 5 at 2:41 Zac67 63.4k

-3

votes

1

answer

57

views

Does IPv4 of all devices follow this standard xxx.xxx.x.x?

ipv4 networking

modified Aug 24 at 7:55 Zac67 63.4k

1

vote

2

answers

44

views

Why does IPsec not support Multicast/Broadcast?

protocol-theory ipsec gre

answered Sep 11 at 3:08 Ricky 28.3k

1

vote

1

answer

56

views

Must the host IP be contained in Router's subnet?

routing router ip subnet gateway

modified Aug 24 at 12:17 Ron Trunk 59.2k

3

votes

1

answer

26

views

How do I export the config from a Juniper mx80

juniper

answered Aug 26 at 12:23 Jordan Head 6,271

2

votes

1

answer

55

views

STP Loop issue on long distance link

cisco switch spanning-tree loop

answered Sep 1 at 15:37 Zac67 63.4k

0

votes

1

answer

41

views

Connectivity issues with 127.x.x.x series [closed]

routing network networking linux loopback

answered Aug 30 at 11:39 Teun Vink♦ 15.1k

0

votes

1

answer

52

views

What defines a device as connected to the Internet? [closed]

ip network

modified Sep 13 at 10:25 Useless 846

0

votes

1

answer

40

views

Understanding the definition of layer 2

network osi

modified Sep 11 at 20:05 Effie 421

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