Questions tagged [ping]

For questions about Packet INternet Groper [PING].

Filter by
Sorted by
Tagged with
0 votes
0 answers
9 views

Cant ping bewteen computers in same network [closed]

I have three machines Windows 10 Windows 7 and Ubuntu 20.04 I cannot ping between these machines ... The ip address Windows 10 is 192.168.1.45 The ip address Windows 7 is 192.168.1.55 The ip address ...
2 votes
3 answers
663 views

Understanding Cisco standard access lists (Packet Tracer example)

Consider the following example: I have two networks (192.168.1.0 and 192.168.2.0) with one PC in each network (PC0 - 192.168.1.1 and PC1 - 192.168.2.1) and a router R0 with 2 interfaces connecting ...
0 votes
0 answers
8 views

Understanding mtr output [duplicate]

Here is my mtr output to googe.com. mehost (me_IP) -> google.com (142.251.40.142) 2022-06-09T09:55:16-0400 Keys: Help Display mode Restart ...
2 votes
1 answer
2k views

Sonicwall TZ105 Site to Site VPN Created can ping gateways but can't ping network from other site

Need help here Site B TZ105 x0 Lan 192.168.162.1 X1 WAN 64.x.x.x X2 LAN 10.0.3.1 Site A TZ300 X0 LAN 10.0.1.1 X1 WAN 69.x.x.x VPN tunnel set up as VPN SITE TO SITE and is Green From Site A I ...
0 votes
2 answers
64 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 ...
2 votes
1 answer
124 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 ...
0 votes
1 answer
245 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 ...
1 vote
0 answers
21 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....
-1 votes
1 answer
17 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 ...
-1 votes
1 answer
17 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 ...
67 votes
5 answers
462k views

PING port number?

Yesterday interviewer ask me what is port number for ping and which protocol ping use TCP/UDP. After interview I search on internet and found different results someone says ICMP uses Port 7, someone ...
1 vote
4 answers
1k views

Why does Nmap not detect a host which is active and responds to Ping?

I have connected to another laptop via the LAN cable, i am able to access the services running on the other laptop via Ip & Port. When i Ping that Ip, the machine is successfully responding. But ...
0 votes
1 answer
102 views

pathping command 100% packet loss

image 1 image 2 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 ...
1 vote
3 answers
383 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 ...
1 vote
2 answers
56 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 ...
0 votes
2 answers
64 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 ...
4 votes
3 answers
850 views

Connection between 2 end devices with different subnet masks (Packet Tracer)

I was just wondering why Packet Tracer allows 2 end devices to ping each other even though they're specced with 2 different subnet masks? am i missing something here? i.e. PC1: 192.168.1.10/24 PC2: ...
0 votes
2 answers
874 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 ...
0 votes
1 answer
76 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... ...
0 votes
0 answers
206 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/...
2 votes
1 answer
599 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 ...
1 vote
1 answer
34 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 ...
0 votes
1 answer
68 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....
1 vote
1 answer
188 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.
2 votes
1 answer
112 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 ...
0 votes
1 answer
350 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 ...
1 vote
2 answers
146 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 ...
0 votes
2 answers
2k 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 ...
6 votes
5 answers
76k views

pinging broadcast address

Iam using linux.I read somewhere in the internet that pinging the 255.255.255.255 will ping everyone in the network segment. And it will return every ip addresses in that subnet. but when i tried ...
0 votes
1 answer
496 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 ...
3 votes
2 answers
3k views

Can't ping the management IP of Switch

My topology is: I am logged in to R1. I can ping 10.0.0.2 on R2 and 198.51.100.1 on R2, but can't ping the management IP of sw3 (198.51.100.2). What am I doing wrong? R1#sh ip arp Protocol Address ...
1 vote
2 answers
466 views

Ping issue: connect a switch into another switch's vlan port

I have a Cisco 2960-X switch and a Cisco SG-300 switch. I created VLANs on 2960-X switch (e.g. VLAN 10 with ports 1-5 and VLAN 20 with ports 6-10) and allow DHCP for each VLAN. Now, laptop 10.10.1.2 ...
2 votes
1 answer
267 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/...
1 vote
3 answers
246 views

Routing issue on router

I have created network with 3 routers, 3 switches and 6 computers Below are configurations, R1-> serial2/0= 192.168.1.1/30, Fastethernet 0/0= 192.168.1.9/29 R2->serial2/0= 192.168.1.2/30, ...
1 vote
2 answers
1k views

How the two computers are able to ping themselves which are connected to single router but both are in different Network?

I have configured network as shown in figure. as we know that we can't ping computer which is in the other Network without routing protocol. then how I suppose to ping this computer as shown in figure ...
0 votes
1 answer
33 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 ? **
2 votes
3 answers
1k views

How does a switch know how to route ping packets?

i tried to browse all available answers on this subject, but it's still not clear to me what a switch can or can't do. I understand that when a host sends out a ping command, for instance ping 192....
0 votes
2 answers
209 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 ...
0 votes
1 answer
295 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 ...
0 votes
2 answers
409 views

Why does NAT keep track of each packet not just connections?

I have tried packet tracer and actual cisco routers and I find this weird: NAT uses different source ports, usually incrementally, for consecutive packets from the same connection. Why is that? ...
2 votes
3 answers
155 views

ping server vs. connecting to server

Networking newb here. Under what circumstances could you fail to ping a remote server with the ping command, but still be able to connect to it via other means (as long as it was still TCP/IP)?
0 votes
1 answer
7k 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 ...
1 vote
4 answers
12k views

Pinging a different vlan without routing

I have a layer 3 switch with two vlans 10 and 20. This is the only configuration i made on the switch: Switch(config)#vlan 10 Switch(config-vlan)#name IT Switch(config-vlan)#vlan 20 Switch(config-...
1 vote
2 answers
329 views

R2 and R3 cannot ping each other

below is a capture of the configuration. R1 can ping the other two routers but R2 and R3 can't ping each other. Any idea what my issue could be? Screen Shot 2018-09-03 at 2.57.00 PM.png Router2#sh ...
7 votes
2 answers
5k views

What would happen to Ping if two PCs have same IP address with same Subnet Mask on same network?

If there are two PCs with same IP address on a LAN, what would happen if I ping that IP address from another PC on the same network and why?
3 votes
2 answers
2k views

Strange router's MAC address from ICMP Echo Reply?

Using Wireshark to capture ICMP packets (Windows) using ping to google.com, I can see the source-MACAddr of the ICMP Echo replies is not the same as the MAC address of my direct router (which is the ...
0 votes
2 answers
166 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 ...
1 vote
2 answers
321 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, ...
-1 votes
3 answers
3k 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 ...
2 votes
2 answers
535 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 ...

1
2 3 4 5 6