Ping fails intermittently but nslookup is fine

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• Successful lease IP, but ping failed and comms

  I run a network of 2 PC's at home. The two PC is running XP. I had successfully this network running with ICS for about 1 year. Due to performance issues, I decided to format the PC host. No hardware changes were made, but I load the updated drivers for all devices (including NIC - Intel Pro 100) on the formatted PC. Since the charging I can't do a ping between 2 PCs. The loop back Ping works fine on both PCs. What is really disconcerting is the fact that by using the ipconfig/all command, I see that the client PC rents successfully a new IP address of the host, but still there is no communication and ping fails. I ran several times in the Configuration Wizard from the network on both machines using different computer names (and even change the name of working group) of force to renew the connection. Whenever I see that the customer is to successfully get a new host IP lease, but always communication and ping is not available. I use AVG free edition and Windows Firewall. I also disabled the Windows Firewall on both machines, but it made no difference. I tried to put the customer on a fixed IP (192.168.0.2), but that also doesn't solve the problem. I am out, please help.

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• Once a day, I lose all network connectivity on my Windows XP SP3 laptop. When I try to ping something I get this error: "PING failed, error 1450' code"

  Hello, those in about 3 days, I lose network connectivity on my laptop with Windows XP SP3. When I ping no matter what page of the console I get the following error message: show PING failed, error code 1450. I tried to use the option of repair in my area, but it did not help. Computer restart resolves the problem, but I'd like to avoid doing. What should I do to solve the problem?

  original title: loss of network connectivity

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• fqdn ping fails after recovery from sleep mode

  client system is win7 64 bit

  Server DSN is isc bind 9.7 works on win 7 64 bit

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  Hello

  From the description of the problem, it seems that your computer is on a domain. I suggest you post the same question on the link below. The link given below is link TechNet Support for Windows 7. The question facing you is best for TechNet forums.

  https://social.technet.Microsoft.com/forums/Windows/en-us/home?Forum=w7itpronetworking

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• DLR ping fails

  I use 5.5 and nsx 6.1.4 esxi

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  DNAT (Destination NAT) is required for http access to vm via a public IP address on the edge gateway ESG.

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• power switch flashes by intermittent but pavilion m1270 desktop don't dΘmarre

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• Each second ping fails

  Hi all

  I have a little test lan with the installation of 2611xm for ipsec vpn.

  On each fe port I have a laptop plugged directly inside, int is assigned by dhcp, and outside at this stage is static.

  I use 3rd party ipsec client program shrewsoft customer vpn.

  The tunnel rises and its is established with many packages of encryption and decryption.

  As mentioned in the title, each second ping fails in both directions from client to client, router 100% inside the cell phone pings and fails to address assigned 192.168.1.10 to the client ipsec "remote".

  Here is my config and below that, I think that highlights where might be the cause, the arp entry address assigned ipsec is incomplete.

  An ipconfig/all on the "remote" client shows a mac address of the int as aaaa.aaaa.aa00 tunnel.

  Kind regards

  Mitchell

  config:

  Router #show run
  Building configuration...

  Current configuration: 2139 bytes
  !
  version 12.3
  horodateurs service debug datetime msec
  Log service timestamps datetime msec
  no password encryption service
  !
  router host name
  !
  boot-start-marker
  boot system flash: c2600-ik9s - mz.123 - 6f.bin
  boot-end-marker
  !
  !
  no location network-clock-participate 1
  No network-clock-participate wic 0
  No aaa new-model
  IP subnet zero
  IP cef
  !
  !
  no ip domain search
  IP domain name vpn.changeme.com
  IP-server names 4.2.2.2
  DHCP excluded-address IP 192.168.0.0 192.168.0.9
  !
  internal IP dhcp pool
  network 192.168.0.0 255.255.255.0
  default router 192.168.0.1
  4.2.2.2 DNS server
  domain vpn.changeme.com
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  !
  Keyring cryptographic remote_user
  pre-shared key address 0.0.0.0 0.0.0.0 key xxxx
  !
  crypto ISAKMP policy 1
  BA aes 256
  preshared authentication
  Group 5
  ISAKMP crypto nat keepalive 5
  crypto ISAKMP client configuration address pool local ipsec
  !
  ISAKMP crypto client configuration group remote_user_group
  key xxxx
  outdoor pool
  ISAKMP crypto profile remote_user
  Keychain remote_user
  remote_user_group group identity match
  !
  !
  Crypto ipsec transform-set esp - aes 256 esp-sha-hmac DYN_TFS
  !
  crypto dynamic-map DYN_MAP 1
  game of transformation-DYN_TFS
  REMOTE_USER Set isakmp-profile
  !
  !
  launch of the card client configuration address card crypto
  card crypto card client configuration address respond
  map 1-isakmp ipsec dynamic crypto map DYN_MAP discover
  !
  !
  !
  !
  interface FastEthernet0/0
  ETHERNET INTERNAL description
  the IP 192.168.0.1 255.255.255.0
  automatic duplex
  automatic speed
  !
  interface Serial0/0
  no ip address
  Shutdown
  no fair queue
  !
  interface FastEthernet0/1
  WAN ETHERNET description
  10.1.1.1 IP address 255.255.255.0
  automatic duplex
  automatic speed
  No cdp enable
  card crypto map
  !
  interface Serial0/1
  no ip address
  Shutdown
  !
  IPSec local pool 192.168.1.10 IP 192.168.1.100
  IP http server
  no ip http secure server
  IP classless
  Driving IP profile
  IP route 192.168.1.0 255.255.255.0 FastEthernet0/1
  !
  !
  access list 101 ip enable any 192.168.0.0 0.0.0.255
  !
  !
  !
  !
  !
  !
  !
  !
  Line con 0
  Synchronous recording
  line to 0
  line vty 0 4
  privilege level 15
  opening of session
  transport telnet entry
  !
  !
  !
  end

  ARP on the router #show
  Protocol of age (min) address Addr Type Interface equipment
  Internet 10.1.1.2 0 001b.d338.0bab ARPA FastEthernet0/1
  Internet 10.1.1.1 - 0017.5993.a6c1 ARPA FastEthernet0/1
  Internet 192.168.1.10 0 incomplete ARPA
  Internet 192.168.0.1 - 0017.5993.a6c0 ARPA FastEthernet0/0
  Internet 192.168.0.2 1 001b.d338.0b7c ARPA FastEthernet0/0

  The "Internet 192.168.1.10 ARPA incomplete 0 " output does not seem right. "."

  The router should not have even this particular ARP entry because there is no router with the 192.168.1.0/24 subnet interface, so there is no reason for the router to ARP for this subnet unless you connect a PC with the 192.168.1.10 ip address previously. I suggest that you turn off the router ARP entry "clear arp.

  For the following path statement: ip route 192.168.1.0 255.255.255.0 FastEthernet0/1, I would like to change the next hop of the fa0/1 to the actual ip address of the next hop router (or your ip address of PC if you connect directly a PC to the router interface fa0/1), that is to say:

  IP route 192.168.1.0 255.255.255.0 10.1.1.x

  Hope that helps.

• I can ping external IPs, but cannot browse Internet on Cisco 897VA sites

  I have a cisco 897va router I use a laboratory. I have a very basic config and am able to ping Web sites but for some reason any cannot browse one of them while connected to this router. The way it is currently Setup is port Gigabit 8 (WAN port) is connected to one of the switchports on my linksys router (connected to the cable modem), and I have a computer connected to the switchport Gigabit router 897VA Ccisco 0. Interface Vlan 1 is configured as my default gateway with the ip address of 192.168.1.1/24. I have a pool dhcp with the implemented network 192.168.1.0/24 which clients receive the ip configuration.  I'd appreciate any advice someone here can provide. Here is my config. I took off with a default interfaces (no) configurations in them for ease of reading:

  C897VA #show run

  Building configuration...

  Current configuration: 1985 bytes

  !

  ! 19:14:01 EST configuration was last modified Sunday, December 1, 2013

  ! NVRAM config update at 19:14:06 EST Sunday, December 1, 2013

  ! NVRAM config update at 19:14:06 EST Sunday, December 1, 2013

  version 15.2

  tcp KeepAlive-component snap-in service

  a tcp-KeepAlive-quick service

  horodateurs service debug datetime msec

  Log service timestamps datetime msec

  no password encryption service

  sequence numbers service

  !

  hostname C897VA

  !

  boot-start-marker

  boot-end-marker

  !

  !

  !

  No aaa new-model

  clock timezone IS - 5 0

  Crypto pki token removal timeout default 0

  !

  !

  no ip source route

  the 5 IP auth-proxy max-login-attempts

  max-login-attempts of the IP 5 admission

  !

  !

  !

  IP dhcp excluded-address 192.168.1.0 192.168.1.5

  !

  IP dhcp INTERNAL pool

  import all

  network 192.168.1.0 255.255.255.0

  default router 192.168.1.1

  domain cedanolab.com

  Server DNS 8.8.8.8 4.2.2.2 4.2.2.3

  !

  !

  8.8.8.8 IP name-server

  IP cef

  !

  !

  udi pid C897VA-M-K9 sn license *.

  !

  !

  !

  VDSL controller 0

  !

  !

  !

  ATM0 interface

  no ip address

  No atm ilmi-keepalive

  !

  interface Ethernet0

  no ip address

  !

  interface GigabitEthernet0

  no ip address

  !

  !

  interface GigabitEthernet8

  DHCP IP address

  NAT outside IP

  IP virtual-reassembly in

  automatic duplex

  automatic speed

  !

  interface Vlan1

  IP 192.168.1.1 255.255.255.0

  no ip redirection

  no ip proxy-arp

  IP nat inside

  IP virtual-reassembly in

  !

  IP forward-Protocol ND

  no ip address of the http server

  no ip http secure server

  !

  the IP nat inside source 1 list overload of the GigabitEthernet8 interface

  !

  access-list 1 permit 192.168.1.0 0.0.0.255

  !

  !

  Line con 0

  Synchronous recording

  line to 0

  line vty 0 4

  opening of session

  transport of entry all

  !

  Scheduler allocate 20000 1000

  !

  end

  C897VA #.

  Thank you in advance.

  Jeremias,

  If I understand you correctly, the PC connected to the Cisco router can resolve names to IP addresses and is able to ping outside the destination, but you can not browse the internet. Is this correct?

  I think an MTU problem. Even if your router connects Ethernet segments only, there may be an additional encapsulation somewhere along the way, by adding an extra burden to your packages and possibly causing them to become oversized. Can you try to add the ip tcp adjust-mss 1360 to your interface Vlan1 please and test connectivity again?

  Also, what exact IP address you receive via DHCP on your GigabitEthernet8 interface? Ideally, can you like after the output of the show ip route and show ip cef between your Cisco router? Also, please include the output of commands show ip cef 8.8.8.8 detail .

  Best regards

  Peter

• CC says my LR trial has expired, but I pay $9.99 monthly for the LR / PS of photography plan, what happens on LR has disabled the develop module but PS works fine.

  CC says my LR trial has expired, but I pay $9.99 monthly for the LR / PS of photography plan, what happens on LR has disabled the develop module but PS works fine. I connect only a couple had a week to CC that has something to do with it?

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• DNS Broke - nslookup successful but Ping fails

  Hello

  I'm working on an old client computer that is running Windows XP SP2.

  The computer is unable to connect because of a sort of DNS issue, so it appears.

  See, very strange:

  C:\Documents and c > nslookup digg.com

  Server: quarter - pri.sys.gtei .net

  Address: 4.2.2.1

  Non-authoritative answer:

  Name: digg.com

  Address: 64.191.203.30

  C:\Documents and c > ping 64.191.203.30

  Ping 64.191.203.30 with 32 bytes of data:

  Reply from 64.191.203.30: bytes = 32 time = 83ms TTL = 242

  Reply from 64.191.203.30: bytes = 32 time = 81ms TTL = 242

  Reply from 64.191.203.30: bytes = 32 time = 82ms TTL = 242

  Reply from 64.191.203.30: bytes = 32 time = 86ms TTL = 242

  Ping statistics for 64.191.203.30:

  Packets: Sent = 4, received = 4, lost = 0 (0% loss),

  Time approximate round trip in milli-seconds:

  Minimum = 81ms, Maximum = 86ms, average = 83ms

  C:\Documents and c > ping digg.com

  Ping request could not find host digg.com. Please check the name and try again.

  C:\Documents and c >

  C:\Documents and c > nslookup digg.com

  Server: quarter - pri.sys.gtei .net

  Address: 4.2.2.1

  
  

  Non-authoritative answer:

  Name: digg.com

  Address: 64.191.203.30

  
  

  
  

  C:\Documents and c > ping 64.191.203.30

  
  

  Ping 64.191.203.30 with 32 bytes of data:

  
  

  Reply from 64.191.203.30: bytes = 32 time = 83ms TTL = 242

  Reply from 64.191.203.30: bytes = 32 time = 81ms TTL = 242

  Reply from 64.191.203.30: bytes = 32 time = 82ms TTL = 242

  Reply from 64.191.203.30: bytes = 32 time = 86ms TTL = 242

  
  

  Ping statistics for 64.191.203.30:

  Packets: Sent = 4, received = 4, lost = 0 (0% loss),

  Time approximate round trip in milli-seconds:

  Minimum = 81ms, Maximum = 86ms, average = 83ms

  
  

  C:\Documents and c > ping digg.com

  Ping request could not find host digg.com. Please check the name and try again.

  
  

  C:\Documents and c >

  So, as you can see the GET from the computer to the correct IP address for any domain using nslookup, but trying to ping or access any domain name instantly fails. :(

  Tried to run winsockxpfix, but that made no difference.

  Also, I tried using the service DNS, open dns but same problem.

  The computer is connected to my knowledge as work network. 7 other computers and two xbox 360 s on the network even get very well correct dns data. So it's fair to this computer.

  Even tried to install BIND 9 on the PC and the same problem. :(

  Thanks for the help,

  Will be

  God Bless America

  I fixed it by managing to install SP3. Just so install SP3 for XP fixed the problem. : D

  And Yes Ben, I tried that too. At a rating of 1. Thank you for trying to help though.

  God Bless America