Questions tagged [ping]

For questions about Packet INternet Groper [PING].

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1answer
57 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 ...
65
votes
5answers
430k 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 ...
0
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1answer
155 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
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2answers
50 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
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2answers
54 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
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3answers
698 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
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2answers
146 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
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1answer
58 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... ...
2
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1answer
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
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0answers
39 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
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1answer
192 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
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1answer
32 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
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1answer
30 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
1answer
79 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
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1answer
78 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
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1answer
82 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 ...
2
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2answers
55 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
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2answers
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 ...
5
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5answers
64k 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
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1answer
119 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 ...
5
votes
2answers
2k 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
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2answers
443 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
1answer
237 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
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3answers
234 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, ...
2
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2answers
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
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1answer
26 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
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3answers
759 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....
4
votes
2answers
200 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
1answer
84 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
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2answers
346 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
3answers
139 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
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1answer
2k 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
4answers
9k 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-...
2
votes
2answers
250 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
2answers
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
2answers
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
2answers
94 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
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2answers
192 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
3answers
2k 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 ...
3
votes
2answers
328 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 ...
2
votes
2answers
11k views

Can't ping a router's interface which is in a WAN directly connected to my router- (Packet tracer)

Here s a pic from packet tracer What I'm trying to do is to ping Router3's Se2/0 interface from PC0.(Or Router2's Se2/0 interface from PC1) However the ping message gets only as far as the Router2's ...
2
votes
6answers
92k views

How Can I use "ping command" with source?

I can not use ping 'target' source 'interface' ping 192.168.0.2 source lo0 % Invalid input detected at '^' marker. It's possible if I use "ping" R2#ping Protocol [ip]: ip Target IP address: 192....
0
votes
1answer
32 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 ...
26
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7answers
15k views

Why can I traceroute to this IP address, but not ping?

I have an IP address and can traceroute to it, but I can not ping. You see, I can traceroute 43.24.226.50: dele-MBP:~ ll$ traceroute 43.24.226.50 traceroute to 43.24.226.50 (43.24.226.50), 64 hops ...
0
votes
1answer
96 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 ...
0
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2answers
217 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 ...
3
votes
1answer
5k views

Cisco Switch Can't Ping Attached Device

PC1-VLAN1======Switch : Successful pings from the switch PC1-VLAN2======Switch : *Unsuccessful* pings from the switch I've got a single switch with a static IP directly connected to PC1 with a static ...
7
votes
6answers
4k 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 ...
1
vote
4answers
152 views

Weird results when pinging

I'm learning IP addressing and routing basics, but I'm facing a problem which I cannot understand, so i have the following structure: Well in this situation, a ping from 130.190.0.16 to 130.190.4.30 ...
0
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1answer
49 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 ...

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