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For questions about Packet INternet Groper [PING].

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0answers
5 views

High Ping on Hop 3 Onwards (traceroute debugging help) [on hold]

Hi can anyone explain to me what is going on with my network? I'm currently having huge delay while gaming. Whenever I had such a delay, I would have a traceroute results similar to the picture shown.
0
votes
1answer
26 views

How frequently do request/response traceroute paths differ? [on hold]

If you use the 'ping' command in a terminal, how frequently (if ever) do the network paths to/from the destination differ? What could cause such paths to differ?
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votes
2answers
2k views

Where is Ping's “round-trip time” stored in the IP header?

If we use ICMP's ping, we know the TTL and round-trip time are stored in the IP header. In the below IP header map we know TTL's location, but where is the round-trip time? Is it stored in Options?
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0answers
23 views

pinging through an interface to an ip not working in teaming [closed]

I have 2 interfaces eno1 and eno2 set up.I am trying to make a team interface using abc as master for device t1 and slave as eno1 and eno2 Trying to create a teaming interface. The commands i used ...
0
votes
0answers
11 views

Cant ping through an interface [closed]

I am running a centos on virtual box.My ifconfig details is given below.eno1 does not contain an ipv4 address .eno2 also does not contain an ipv4 address.When i do try to ping through interface eno1 ...
0
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1answer
48 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 ...
-1
votes
1answer
22 views

My interface do not have a IP address in a segment, but I can ping the IPs of it

You see, in my local Mac's network interface there is no 172.18.1.*: $ ifconfig lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP&...
2
votes
2answers
48 views

What are the differences between TCP iRTT and ICMP Ping?

I’m attempting to estimate latency between my PC and any servers/clients it interacts with. I don’t want to use Ping for various reasons (requires both ends to allow it, would require additional ...
0
votes
1answer
41 views

Establishing connection between two 2 devices in 2 different subnets

I have a problem regarding routing between two subnets. Here is how the structure of my company network looks like: There's a subnet that has an IP: 172.16.218.0 (which is company's main network ...
0
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0answers
16 views

Not able to ping through GRE Tunnel

I'm trying to build a GRE tunnel between two Ubuntu machines. I followed this Documentation to avoid all problems, the 2 concerned interfaces are directly linked and are in the same subnet 10.0.41.0/...
1
vote
1answer
77 views

Improve ping speed (lower up ping time) [closed]

In normal network with Cisco 3650 (1Gbps) and Linux base servers, the ping time is between 0.150ms to 0.250ms. (I also mean using ping or ICMP is to refer to all protocols) I want to know is there ...
1
vote
3answers
60 views

Pinging computer on a local wireless network, what exactly happens?

I'm trying to get a better understanding of networking in general. Here's one of the many questions I got: What exactly happens (network wise) when I ping 192.168.0.5 from 192.168.0.3, when both are ...
0
votes
2answers
65 views

Routing beetween two hosts [closed]

In a virtual network, I have two hosts,let's call : A and B with ip addresses of 10.0.0.1 and 10.0.0.4. Beetween the hosts there is a router with two different network cards,and two different ip ...
1
vote
1answer
36 views

ping problem in wireless router

n packet tracer my wireless laptop can ping other PC's in the network but PC's cannot ping the laptop. > R2(config)#do sh run Building configuration... Current configuration : 918 bytes ! version ...
1
vote
2answers
59 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....
1
vote
3answers
162 views

When is 'Timestamp' and 'Timestamp Reply' are used in ICMP protocol?

I started the packet capture in my laptop through Wireshark application. Now through cmd, I pinged some server (say, www.google.com). And i stopped packet capture and analysed the packets being ...
2
votes
1answer
236 views

Configure Routing on Catalyst 3650 with LAN Base

I am attempting to configure routing on a Catalyst 3650 running LAN Base to meet a particular set of criteria. For context: the switch is being configured as part of a lab environment that will allow ...
0
votes
4answers
109 views

How does the router tell if a packet is sent to local host or public host

I might sound silly, but I'm beginner. If there are two hosts with the same IP but one is public and the other is private. If I send a packet to that IP. Will it be forwarded to the local host on my ...
1
vote
2answers
64 views

I CAN'T ping PC7

So... I have a set up as below. I ping PC7 from the router. obviously an ARP is sent to determine PC7's MAC address. but it doesnt work. i then decide to set packettracer to simulation mode. i ping ...
0
votes
1answer
59 views

GNS3: No Response When Pinging Router Connected on Second Serial Interface

I'm attempting to set up a network with 3 Routers. A "West" and "East" router are each connected to a "Central" router via a PA-4T+ serial interface. The first interface (s1/0) on the Central is ...
2
votes
2answers
88 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 ...
3
votes
2answers
48 views

are the RTTs additive?

By using the ping, I calculate the RTT between A and B. I calculate the RTT between A and C. I calculate the RTT between C and B. Is it possible to compare the RTT of topological link A->B with the ...
4
votes
2answers
83 views

does the DSL distance really add more latency

I've been using dsl internet for quite a while and having a ping from Algeria to France of about 90 ms , after trying to ping some locations in Algeria , i am getting about 50 ms, ping to my gateway ...
0
votes
1answer
64 views

How might I test layer2 latency over ethernet without a target IP address? [closed]

Is there a way, via standard ethernet layer2 protocols, to test latency to a device without using it's IP address? Background: I have a fibre "box" provided by my ISP physically connected to my ...
4
votes
5answers
579 views

Why can't two hosts (in two different logical networks) connected to each other through cross-over cable communicate?

Let us say, i have two computers (hosts) A and B. Where A has been assigned an IP address of 192.168.1.10/24 and host B has been assigned an IP address of 192.168.2.11/24. And both of them has been ...
1
vote
2answers
173 views

ASA cannot ping outside through NAT on border router

I have the following topology below, in GNS3. Basically, the cloud NAT-1 is the Internet, R1 is my border router with NAT and FWASAv-1 was supposed to be able to access the Internet, but can't. I ...
3
votes
1answer
61 views

Same hop appears 4 times on a traceroute [closed]

When I traceroute bbc.co.uk in my home Network the first hop appears 4 times. What could be causing this ? @Latitude-7480 ~ $ tracepath bbc.co.uk 1?: [LOCALHOST] ...
1
vote
2answers
33 views

Pinging a host that is not on

What happens if I send a ping to a host that is off? Do I get an ICMP message with "host unreachable"? Does ICMP say nothing at all because the packet was correctly delivered even though it was not ...
2
votes
2answers
64 views

Two router connected directly can't ping each other

Just for practice purpose i've created an network on Cisco packet tracer like this. But i am not able to ping router 3 from any other devices. Below are the configurations on each devices. Router 3:...
0
votes
1answer
57 views

What are the “next steps” to take when business Internet service stops working? [closed]

Scenario (based on real events) a small business has a "BigCorp" Internet service. One day the Internet goes down after a power outage, and they call BigCorp for help. BigCorp support over the phone ...
0
votes
1answer
114 views

Ping from ASA over Site to Site VPN

There are two things I'm trying to solve which are essentially the same problem. Cannot ping from the ASA to remote devices over a site to site VPN terminated on the ASA. ASA AnyConnect LDAP lookups ...
1
vote
3answers
322 views

Switches Can't Ping Each Other but PCs Can

I have an HP ProCurve 2910al running pretty much factory defaults on it at 192.168.1.50. There are 2 VLANS on it. Ports 1-12 are VLAN 1 (untagged) Ports 13-21 are VLAN 2 (Untagged) Port 22 is a ...
0
votes
3answers
100 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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0answers
146 views

Problem with VPN - cisco - can't ping own interface

We are student from an IT school and we need to finish our project tomorrow. The project is a big network using OSPF, and we have a (kind of fake) VPN between two different places. We have to "...
1
vote
1answer
136 views

unable to ping across dell 3048 switch

We have installed a new Dell 3048 switch onto an internet connection with 2 routed IP blocks. The usable IP blocks are 144.121.77.32/29 and 144.121.77.160/28. They are routed through 104.129.88.70/...
0
votes
0answers
264 views

Proxy ARP and ping not working

I am trying to ping the loopback interface on R1. The configuration of the two routers: R1 interface addressing: e0/0 --- 10.1.1.1/24 e0/1 --- 11.1.1.1/24 loopback0 --- 1.1.1.1/32 R2 interface ...
0
votes
2answers
124 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, ...
6
votes
1answer
413 views

Why can I ping IP addresses from 127.0.0.1 to 127.255.255.254?

I thought that the loopback IP address of my machine is 127.0.0.1. I do not understand why am I able to ping IP addresses until 127.255.255.254.
2
votes
2answers
334 views

Trace Route RTO in one hop but next hop works

Today when I was doing tracert, in the 6th Hop I get RTO but my next hop seems to be reachable. How come it works? 6 * * * Request Timed Out 7 58ms 58ms ...
0
votes
1answer
83 views

Block all inbound traffic except for a defined IP

Thanks in advance to anyone who will take time to provide a possible solution. This is my actual situation: ___________________ ________________ INTERNET --------...
5
votes
1answer
198 views

which host will reply to the ping?

suppose having a LAN which contains : FTP server (10.0.0.1) HTTP server (10.0.0.2) SSH server (10.0.0.3) the LAN use NAT overloading and it has a single public IP (1.2.3.4), now if I ping on 1.2.3.4 ...
1
vote
4answers
288 views

ARP Cache entries

Consider 2 PCs 01 and 02, where 01 is connected to a router R, which is in turn connected to a switch S, connected to 02: 01--R--S--02 I need to understand what would happen to ...
0
votes
1answer
291 views

Difference in number of hops calculated using ping vs traceroute

I pinged a host using the minimum TTL value that didn't elicit a 'Time to live exceeded' response to calculate the number of hops between us. When I used traceroute, that number was a little bigger. ...
1
vote
0answers
271 views

Interface is up, but wan interface ip not pinging?

I have Juniper ACX-2200 router , i have assigned an ip address to the vlan tagged to ge-0/1/2 interface , and interface status is up, but self wan interface ip not pinging , ip won't even show up in ...
3
votes
3answers
8k views

Ping a private IP address in another network

We all know that PCs on a LAN use private IP addresses such as 192.168.2.3, etc. Now my question is, how can a PC say mine having a private address of 192.168.2.3 communicate with other LAN PC ...
2
votes
1answer
449 views

ARP broadcast vs Default Route

Assume a host is connected to a router. If a host pings an unknown unicast address that's not in host's routing table, which one of the following is going to happen? (Assume the default route points ...
-1
votes
2answers
136 views

How to get all the device information between two devices

I've two devices: My-PC and Another-PC. The two devices are connected to a switch, which is connected to main switch with-in the same LAN. My question is: how do I get all the device information ...
1
vote
1answer
3k views

Ping Port Number

I'm just wondering, is there a port number used for the ping command. I have dissected the ping packet on Wireshark, but I haven't seen any destination or source ports. Am I just missing something?
1
vote
2answers
985 views

My first IPv6 ping fails

I have some dual stack websites. When I open my websites they connect using IPv4 the first time, and then IPv6. If I ping the IP address directly, the first ping fails for IPv6 and then works fine. ...
0
votes
1answer
3k views

Wireshark No response seen sending ping request

I'm building my own packets and sending them through a raw socket. The packet is apparently A-OK, but I'm not getting any replies. Sequence block is generated with a for loop. Identifier block is ...