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For questions about Packet INternet Groper [PING].

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Why MLS2 Doesn't Get ICMP Packet To Where It Should?

This is a Packet Tracer lab from Kieth Barker's website with minor modifications. It is intended to exhibit how can we get to the network 10.10.0.0/24 access to the Web Server 23.1.2.2/24 Using NAT. ...
Shadi's user avatar
  • 285
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0 answers
13 views

Where is 1.1.1.1 really located? [duplicate]

I'm courious how this works: When ping-ing 1.1.1.1 I get results of roundabout 15 ms, where 1.1.1.1 is located in California, according to iplocation.net. When ping-ing a random ISP from California I ...
Justin Time's user avatar
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0 answers
28 views

iputils ping: -N (IPv6 node info query): purpose, usage, examples

What is the purpose of IPv6 node info query and how is used in ping-N ...?
pevik's user avatar
  • 147
1 vote
1 answer
54 views

Pinging packets greater than 1500 between two proper configured machines on proper configured networks, always possible?

Given the following 3 subnet topology, I will give names to them to simplify it, I am using planets, I see it as a perfect geographic enumeration. Sites Office on Earth 172.1.x FiOS, default MTU ...
Sam Washington's user avatar
0 votes
1 answer
122 views

In a trace route, do routers that do not respond still forward the packets?

In traceroute, The sender expects a reply within a specified number of seconds. If a packet is not acknowledged within the expected interval, an asterisk is displayed. Pasting here the example trace ...
Noob_Guy's user avatar
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0 answers
63 views

noob learning cisco

I'm trying to teach myself how to use cisco devices. i was given an router, switch and firewall. so far i been able to set up vlan and have intra vlan routing working. My issue is having the switch ...
Stu Villanti's user avatar
0 votes
1 answer
144 views

Switch ping to router with trunk port

If I have a switch port trunk directly connect to a router with the follow scenario below: -------- g1/0/1 (Trunk) g1/0/1 |------| |switch| Native VLAN 1 SVI=...
Andrew's user avatar
  • 103
0 votes
2 answers
96 views

How to interpret traceroute results? [duplicate]

So, I have a task which involves calculating the RTT to a destination. Now, I have done it using ping. But, I need to do it using traceroute too. From, my knowledge about traceroute, I know that it ...
Vedanta Mohapatra's user avatar
0 votes
1 answer
97 views

Change source and destination adresses from a valid captured ping to create a valid ping with different source and destination

I want to create traffic in my network, especially I want to send a repetitive ping to the device with the IP 192.168.3.146 from my traffic generator (IP 192.168.3.100) (see scematic) For the creation ...
sellerBasti's user avatar
0 votes
1 answer
1k views

Not able to ping device with different subnet on gateway and ip adress

I am trying to ping a device with IP 192.168.0.200, subnet mask 255.255.255.0. It is configured with gateway adress 192.168.1.1. Is it because the gateway subnet, and ip adress subnet is different i ...
alehol's user avatar
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2 answers
316 views

My PCs aren't able to ping each other successfully. Why? I think my Ip route is the problem? I am not sure

I have a topology of PCs A, B, D, and E, 2 routers R1 and R2, and 4 switches A, B, D, and E for each of my PCs respectively. PC A IP is 201.4.100.1/28 with a default gateway of 201.4.100.2, PC-B IP ...
NETFstudtNP's user avatar
0 votes
1 answer
367 views

trying to ping 192.168.2.2 from 192.168.1.1 pcs

im trying to ping pc2 from pc0 and it doesn't work can anyone help tell me why? pc0 is 192.168.1.1/24 and pc2 is 192.168.2.2/24. The port connecting switch 0 is 192.168.1.100/24 and the port ...
potatoNetwork's user avatar
0 votes
2 answers
1k views

How to solve high ping "spikes" to pfSense when ipSec connections are active?

Background information: We have latency/freeze problems with our pfSense. To be able to answer the question i will first give some general background information: We run pfSense V2.6.0 on following ...
CodeNinja's user avatar
  • 219
1 vote
1 answer
263 views

Measuring Latency between my local network hops [closed]

I have to measure the latency in my local network and also between each hop. I used the conventional tools like ping, tracert, pathping etc. But the problem is here these tools have there own protocol ...
Nifty's user avatar
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0 votes
2 answers
212 views

How to benchmark time a packet spend in each OSI layer?

I'm benchmarking latency of sending a TCP packet from a client to a server. The payload of the packet is the nanosecond timestamp (using clock_gettime() on Linux) right before the send() socket ...
Huy Le's user avatar
  • 103
1 vote
0 answers
36 views

Strange repetitive ping pattern [closed]

A Hitron MoCA 2.5 device is locally (LAN 10.10.10.37/24) directly RJ-45 connected to a 1Gb switch. The cable is cat-6 and about 10 meters long. (the other Hitron is in another distant room, IP 10.10....
Déjà vu's user avatar
  • 133
-1 votes
1 answer
40 views

How can a ping response fail from my modem, but succeed from my ISP and Google DNS (beyond the modem) within the same timeframe? [closed]

My network design is simple, it goes: "My Computer > Switch > Router > Modem > ISP". I am pinging the Switch, Router, Modem, ISP, and Google DNS at the same time. Occasionally, I ...
Dr_Xunil's user avatar
  • 115
-1 votes
1 answer
37 views

What does the number after the arguments mean in these commands?

I think this is a very basic question but I could figure out a way to phrase question to find answers on google. I just started studying network management for a module of my degree a few days ago and ...
Tashila Pathum's user avatar
0 votes
2 answers
460 views

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 ...
Rohit's user avatar
  • 31
5 votes
4 answers
4k views

Is there a ping equivalent on layer 2?

You can use ping to measure RTT between you and an IP host and thereby confirm connectivity. Is there an equivalent that can be used on L2/Ethernet with MAC addresses? i.e. l2ping AA:BB:CC:DD:EE:FF (I ...
Atemu's user avatar
  • 153
0 votes
2 answers
70 views

Client's ARP requests affect whether Cisco C897VA receives packages or not

So I have bought used ISR C897VA with an issue: when vlan1 is pinged from windows there are quite a lot of "Request timed out"s. Config-register 0x2142 has been done, as well as resetting ...
Qeeet's user avatar
  • 103
0 votes
2 answers
4k views

Can a bad ethernet cable cause lag spikes?

I needed to extend a 50m cable by about 1 meter. I know that the best solution would be to make a new run but it's very difficult to swap the cable so I tried to avoid it. As RJ45 couplers would take ...
Lefteris Garyfalakis's user avatar
0 votes
1 answer
238 views

Why I can't ping in my network?

I have the following network: The following is my interface table: This is my PC IP address table: This is the configuration for Router ISP: ISP#show running-config Building configuration... ...
ayy_chemixd's user avatar
0 votes
0 answers
672 views

Can ping from VPC 1 to router and VPC2, but can't ping from switch to VPC2 or router

I have a simple, linear topology in GNS3 that goes like this. VPC1 > Switch > Router > VPC2 I have the default static IP Routes on the router set to 0.0.0.0 0.0.0.0 Ethernet0/1 and Ethernet1/...
Dasph's user avatar
  • 135
3 votes
1 answer
2k views

I can't ping the gateway IP (fe80::1) from the internal port in my fortigate 60f firewall

I am using a fortigate 60f firewall. I have configured it for both ipv4 and ipv6. I have used the SD wan (by adding wan1 and wan2) for load-balancing. Moreover, I have configure a default static route ...
Ecstasy Entertainment's user avatar
1 vote
1 answer
58 views

Unable to ping switch

Why can't i ping S1 from PC-B, but it's possible to ping PC-A? S1#show running-config Building configuration... Current configuration : 1638 bytes ! version 16.3.2 no service timestamps log datetime ...
Max's user avatar
  • 11
2 votes
1 answer
513 views

Why I can't ping my switch Vlan99?

In the following network, I have configured every device but somehow I can't ping my Customer-PC and Technical-PC to PasirGudang-SW and Segamat-SW. The PCs can ping the other ip address just fine ...
Tyah Alwi's user avatar
0 votes
1 answer
202 views

directed broadcast ping on overlapping subnets

I have a router with 2 hosts connected to it. R: 192.168.0.1/24 host 1: 192.168.0.9/28 host 2: 192.168.0.15/24 Host 1's directed broadcast IP is the same as host 2, so what happens if host 1 pings 192....
MavisTy12's user avatar
1 vote
1 answer
421 views

Can't ping neighboring router OSPF

I have set up an OSPF network and I cannot ping from the Edge router to Main Branch.
Queeque's user avatar
  • 11
1 vote
2 answers
62 views

Cisco 800 Series ARPing's to ISP are Intermittant

According to my ISP, our occasional internet outages are do to a router configuration problem. They say the router must ARPing the ISP regularly. Failure to do so in 4 hours results in outgoing and ...
Dorothy's user avatar
  • 121
2 votes
1 answer
573 views

MTU changing after first ping

I noticed kind of strange behaviour and my knowledge doesn't have answer for it. So I want to know MTU. First ping: ping -c 1 -s 1800 -M do google.com PING google.com (216.58.209.14) 1800(1828) bytes ...
Nerwena's user avatar
  • 23
0 votes
1 answer
2k views

ICMP packets are being dropped while pinging

I am pinging from one of the Juniper L3 interfaces to another with a rapid ping count of 10000 packets. It's a direct 100G optical connection and I am seeing 10-15 packets being dropped by the end of ...
Rakesh Nittur's user avatar
0 votes
1 answer
3k views

Computers in an unmanaged switch cannot communicate with one another [closed]

TL;DR: I have > 2 computers in an un-managed switch which can't communicate with one another i.e. can't ping or ssh among one another. Long story: As per the diagram my router can reach the ...
shriek's user avatar
  • 101
2 votes
1 answer
292 views

Cisco, Router can communicate; hosts cannot

I am learning CCNA related tasks, I have picked up a Cisco 1900 Series router. I am attempting to set it up behind my existing router (Comcast standard router). My "Real" network is 10.0.0.0/...
Christopher Allen's user avatar
0 votes
1 answer
40 views

Ping using 127.0.0.1 [closed]

My question is about this case : I have a PC with 2 NIC (Network interface card ) , when I do ( ping 127.0.0.1) ** which nic will be the ping tested on ? **
sulaimansaleh Zd's user avatar
0 votes
1 answer
19k views

"Destination host unreachable" when pinging a pc from another network

I tried to build a simple network in Packet Tracer and I get "Destination host unreachable" when I try pinging a PC from another network. Pinging PCs from the same network works. When I use ...
EuLaur D's user avatar
0 votes
1 answer
537 views

Ping to default gateway failing

I am trying to ping to a default gateway which i have configured as 171.2.0.1 but somehow the ping is failing . I am new to network domain so i have less idea about it . Any help is appreciated .This ...
Jyotiraditya Tomar's user avatar
0 votes
1 answer
1k views

Static Routing - host to host ping does not work (MikroTik)? [closed]

I'm trying to do static routing using actual devices. Below is my setup: The left router is a MikroTik RouterBoard hAP lite. The right router is a MikroTik RouterBoard hAP ac. I want to ping from ...
Noob_Guy's user avatar
  • 491
1 vote
2 answers
436 views

Why does ping interval affect latency?

The following article on Google Cloud describes measuring latency, and uses ping and netperf. https://cloud.google.com/blog/products/networking/using-netperf-and-ping-to-measure-network-latency It ...
GCon's user avatar
  • 113
1 vote
2 answers
916 views

Bandwidth, Latency, Download speed and Upload speed

In the midst of trying to diagnose a slow vpn issue, I'm getting a bit confused by the various metrics being mentioned by the many different techs I've been speaking with. From what I understand, ...
Silfheed's user avatar
  • 111
-1 votes
3 answers
6k views

Confusion about TTL when pinging

TTL value of a packet is supposed to decrease 1 at each router from 255 down to zero as follows: But when I ping to 8.8.8.8 the TTL starts at 253 and doesn't change: How can this be explained? Why ...
pnatk's user avatar
  • 101
2 votes
2 answers
1k views

Confusion about MTU

I am studying about IP fragmentation and MTU. What I know is MTU is the property of Physical medium, as in the amount of data it can process without having to fragment the data. The default MTU on ...
Techievent.in's user avatar
0 votes
2 answers
252 views

How to check cable without ping?

Is there any way to check if a network link is physically working, without using ping? Recently bought a Power-Line-Communication device, and I wanted to test if it works. Before pinging the machines ...
ymudyruc's user avatar
0 votes
1 answer
42 views

Who can get ARP packets? [duplicate]

I'm new to networking. And as far as I understand about ARP messages, Alice can only send ARP to Bob if two are connected. But if Alice and Bob are connected to a router, but not connected to each ...
mikal's user avatar
  • 1
0 votes
1 answer
589 views

HP5130: Cannot ping vlan interface

I have a really simple set-up but I still cannot find what is wrong. Sorry if duplicate, I searched and didn't find. I have a HP 5130 switch, I install 2 VLAN (30 & 42) + the VLAN 1 for ...
n0n0bstan's user avatar
  • 103
1 vote
2 answers
7k views

I Cannot Ping Switch to Device, but can ping Device to Device

I'm currently troubleshooting a network i built and I'm having an issue with ping connectivity, i have set up DHCP and DNS and my end devices can get IP's from DHCP as well as i have intervlan ...
bruteforce2's user avatar
0 votes
2 answers
1k views

Specifying destination interface in ping commamd

is there any way to specify destination interface in ping command, like ping -i eth0(destination interface) host. I want to do this so that I can capture packets on host on specific interface ...
Vipul Tyagi's user avatar
0 votes
2 answers
5k views

Permit ping and traceroute and deny all other services using an ACL

my topology is shown below: I would like the networks that are connected to Hermes-Router to be accessible from all the other stations only when I use ping and traceroute. I tried to do this using an ...
Giannis Matsarokis's user avatar
7 votes
6 answers
5k views

What happens with a ping when it enters a network? Is the router the one answering with a reply?

What happens with a ping when it enters a network? Does the router redirects it to one of the devices on the network, or it sends the reply itself? Device a1 from network A, with public IP adress P1 ...
Alex M.M.'s user avatar
  • 173
0 votes
1 answer
292 views

Ping time varies between two devices in the same LAN [closed]

I am trying to ping between two devices A [Server] and B[Router]. From A to B the average ping response is about 1ms and from B to A is 0.5ms which is half. As a result, if I scp a file to B, by ...
Rakesh Nittur's user avatar

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