-an ARP entries

Similar Questions

• Static ARP entry telnet command - techies check pls!

  Hello seniors,

  What TYPE telnet commpand to bind an IP (aka the static ARP entry) MAC address on most Linksys routers? I don't have GUI for it in the FW so telnet is hope.

  I do the straightforward matter with ahope that history is not quite necessary to renounce the thread to go astray

  I'm inside my telnet # on 192.168.1.1, I just need the usual command syntax.

  Thank you.

  Linksys X 3500:

  ARP add 192.168.1.xxx aabbccddeeff:

  ARP delete 192.168.1.xxx

  show ARP

• Arp s MS-DOS command prompt

  Trying to attack a NIC with the command prompt "arp s 010.010.014.100 00-20-4A-0B-1B-6B" and continue to be "ARP entry addition failed: 5" message.» Anyone know what this means?

  I think it means that you do not have the correct privileges. Did you use an elevated command prompt?

  You can do the same thing with the netsh command

  http://TechNet.Microsoft.com/en-us/library/cc731521 (WS.10) .aspx #BKMK_setneighbors

• N2000 - arp with Enhanced hash mode issues

  Hello

  I want to report a problem, I got after pass a set of three switches the 6.2.6.6 version N2048 to version 6.3.0.16

  After the upgrade, some PC on some VLANs failed their gateway more. I found that these devices don't y mac of the bridge in their arp table. It would seem that their arp requests would be removed in the channel port connecting the N2048 to the rest of the network stack. Add a static arp entry on the affected PC has enabled them to reach their front door.

  I know that there has been a bug (fixed in 6.3.15) with package falls on the port channels using the (strengthened) 7 mode. It gave me a clue and today I changed the mode of hash for 6 (IP Source/Destination and source/destination port TCP/UDP) and I removed the static arp entries, that I had created to circumvent the problem of the day before. Then I could see the bridge as a dynamic desktop entries, as it should.

  It seems that there is always a with improved hash bug in 6.3.0.16. I'll be happy to send my config and / or more information on demand to help you study the problem.

  Kind regards

  Martin

  cool, which is literally just released although there was a lot of outings lately.

  See you soon

  Jamie

• Time-out for ARP cache on Cisco routers

  Hello

  I was reading a book on Cisco routers, in which the author said: "the router resets the age ARP meter to zero whenever he sees valid traffic from the corresponding device.» This ensures that the addresses of active devices are never emptied in the cache, regardless of how long they have been known. »

  I'm really surprised at this topic because I always thought the age counter ARP was an absolute of the meter and not compared to the last time a package was seen coming from the corresponding IP address. After reading this, I did a few tests that tend to confirm the age counter ARP is absolute and that he cares not if we have movement active in the corresponding period of INQUIRY or not.

  : Question 1 can someone confirm this please?

  I am unable to find clear statements in the Cisco documentation.

  QUESTION 2: when the router sends a new ARP request?

  For example, when the time-out of the ARP is 4 hours or 240 minutes (default value of Cisco), the router sends an ARP request reaching 239 minutes (1 minute before the expiration time). This value is a fixed (send us a 1 minute before aging ARP request) or is it a relative value (x % of the value of timeout)?
  

  Thanks for your help.

  Sam

  I have some additional information that might help. I found an ad of a Cisco engineer, which gives some information about the behavior of ARP in Cisco IOS. He said clearly (and is an example) that if Cisco receives an ARP to a host request it will use this request to refresh the ARP entry and reset the timer so that the entrance without making its own application ARP. Maybe that's the behavior they were trying to talk in the IOS Cookbook.

  It also speaks to a unicast ARP request 60 seconds before the expiration of the entry so that the entry can be updated. It does not specifically say, but I think that this interval is fixed.

  Here is the link if you want to see the details:

  http://puck.nether.NET/pipermail/Cisco-NSP/2005-February/017400.html

  Regarding the error in the book, I worked as an examiner on a few pounds and can tell you that the authors and reviewers are working hard to do the right thing. But sometimes mistakes are not captured and appear in the publication. With the amount of detail covered in the book some mistakes are bound to crawl through.

  HTH

  Rick

• Ethernet interface disappeared

  As I rebooted my laptop this morning, I didn't more wired Ethernet network. I have not installed updates yesterday, but yesterday it worked correctly. It is not a problem with the router or the cable, because it works correctly with the other laptop. The router detects when I connect the cable (the port lights) but the router has no ARP entry for the connection (only for wifi that I need to write this question). In addition, it still works the WiFi.

  Restarting the laptop does not help. I opened 'Network Preferences' and I removed the Ethernet network in order to recreate, but surprisingly, the 'Ethernet' interface does not appear in the list more (it is available WiFi, Firewire, Thunderbolt 1, Thunderbolt and Bluetooth PAN bridge). With the Network Diagnostics didn't help either. I also tried to test the equipment with the Apple Diagnostics (by pressing D when starting the laptop), but I did not need to start the diagnostics.

  It seems that the ethernet driver has been uninstalled or misconfigured.

  I have a Mac Book Pro (2011) with OSX El Capitan.

  Any advice on what to do?

  Thanks in advance

  You can take a look at the thread below.  Mac model is different, but could be the same cause as your punishment.

  Missing built-in Ethernet

• GSS108E: time to upgrade the firmware

  Hi all

  I tried to update the firmare of my GSS108E to version 1.0.0.1. The firmware is only about 40%.

  then the 'Prosafe Plus Configuration Utility"indicates a timeout.

  The "PPC utility" shows a look next to the name of the switch and always only will attempt to load the firmware.

  How can I complete the update of the firmware?

  Solution here:

  https://community.NETGEAR.com/T5/smart-plus-click-switches/Web-firmware-upgrade-for-GS108Ev3-failing...

  Enjoy.

  Summary: Enter a manual arp entry for the IP address and MAC of your GSS108E. Expect Netgear engineers to think that you are talking about the GS108E

• E3000 - WoL - works once, but not again

  Greetings,

  I use WoL for one of the PCs connected to an E3000 on my home network.  I can feed successfully on the S3 PC (at rest) or S5 State (power off) one or more times, but after a certain period of time the E3000 is unable to send packets to the destination computer and it fails to wake up.

  Logging shows the packets are received by the router.  They stop just transferred to the destination after a certain period of time.  I haven't measured this time exactly.

  Research indicates that the router can be remove the destination computer IP is the ARP table, which rotates the unreachable PC until it is manually turned on and off the power again (S5) or put it to sleep (S3).

  It works reliable and consistent, then stops in a few hours.  The issue is not on the network card power management.  As I said, the packages on the Wan are received successfully from the outside.  Packets on the local network are also, but not communicated Wake.

  I use various utilities to wake you up.  Everything works fine.

  MC - wol

  Magic packet

  Mocha VNC for iPhone

  Does anyone have ideas, what can be done to wake up the PC?  The only other thing I have not tried manually enters the static IP address on the NIC... the same IP address that is reserved for its MAC address, put in place on the E3000.

  Thanks in advance

  Linksys routers do not support the WOL. They expire the ARP entry after a certain time, and there is no way to add or set a static ARP entry. It is simply not supported.

• Reference Dell system detects

  I would like to get rid of this program. Win Patrol popups all the time asking if I want to give this authorization of program start-up and Malwarebytes it signals like a PUPPY. When I go to the control panel and try to uninstall on a Windows 7 machine, I get this message that it can not be uninstalled:

  LATFORM VERSION INFORMATION
  Windows: 6.1.7601.65536 (Win32NT)
  Common Language Runtime: 4.0.30319.34209
  System.Deployment.dll: 4.0.30319.34244 built by: FX452RTMGDR
  CLR.dll: 4.0.30319.34209 built by: FX452RTMGDR
  dfdll.dll: 4.0.30319.34244 built by: FX452RTMGDR
  c:\windows\syswow64\dfshim.dll: 4.0.41209.0 (hand. 041209 - 0000)

  IDENTITIES
  Deployment identity: DellSystemDetect.application, Culture = neutral, PublicKeyToken is 0f612f649c4a10af, processorArchitecture = msil

  SUMMARY OF THE ERROR
  Here is a summary of the errors, the coordinates of these errors are later in the newspaper.
  * Error occurred during the search of store, store of components have been damaged. The following failure messages were detected:
  + Application is not installed.
  * Error occurred during uninstall of the application. The following failure messages were detected:
  + Application is not installed.
  * Exception occurred during uninstall of the application DellSystemDetect.application, Culture = neutral, PublicKeyToken is 0f612f649c4a10af, processorArchitecture = msil. The following failure messages were detected:
  + ARP entry 9204f5692a8faf3b does not exist.
  + Impossible to delete a subkey tree because the subkey does not exist.

  COMPONENT TRANSACTION FAILURE SUMMARY STORE
  No transaction error.

  CAVEATS
  There are no warnings during this operation.

  STATUS OF OPERATION
  * [13/05/2015 17:43:20]: looking for information on the component store.
  * [13/05/2015 17:43:20]: uninstall applications DellSystemDetect.application, Culture = neutral, PublicKeyToken is 0f612f649c4a10af, processorArchitecture = msil has failed.

  ERROR DETAILS
  The following errors were detected during this operation.
  * [13/05/2015 17:43:20] System.Deployment.Application.DeploymentException (SubscriptionState)
  -L'application is not installed.
  -Source: System.Deployment
  -Stack trace:
  to System.Deployment.Application.SubscriptionStore.CheckInstalledAndShellVisible (SubscriptionState subreport)
  at System.Deployment.Application.DeploymentServiceCom.MaintainSubscriptionInternal (String textualSubId)
  * [13/05/2015 17:43:20] System.Deployment.Application.DeploymentException (SubscriptionState)
  -L'application is not installed.
  -Source: System.Deployment
  -Stack trace:
  to System.Deployment.Application.SubscriptionStore.CheckInstalled (SubscriptionState subreport)
  to System.Deployment.Application.SubscriptionStore.UninstallSubscription (SubscriptionState subreport)
  at System.Deployment.Application.DeploymentServiceCom.MaintainSubscriptionInternal (String textualSubId)
  * [13/05/2015 17:43:20] System.Deployment.Application.DeploymentException (InvalidARPEntry)
  -ARP entry 9204f5692a8faf3b does not exist.
  -Source: System.Deployment
  -Stack trace:
  at System.Deployment.Application.ShellExposure.RemoveArpEntry (DefinitionIdentity subId)
  to System.Deployment.Application.ShellExposure.RemoveSubscriptionShellExposure (SubscriptionState subreport)
  at System.Deployment.Application.DeploymentServiceCom.MaintainSubscriptionInternal (String textualSubId)
  -The inner Exception-
  System.ArgumentException
  -Cannot delete a subkey tree because the subkey does not exist.
  -Source: mscorlib
  -Stack trace:
  at Microsoft.Win32.RegistryKey.DeleteSubKeyTree (String, Boolean throwOnMissingSubKey subkey)
  at System.Deployment.Application.ShellExposure.RemoveArpEntry (DefinitionIdentity subId)

  STORE THE TRANSACTION DETAILS PANE
  No transaction information is available.

  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  I was able to remove Dell system detects my Windows laptop 8.1.

  OK-figured this out. I opened the program and had to install first before I could remove it.

• exit show me the same MAC address twice

  Hi all

  and easy for sure. When I run the interfaces see the G0/1 command on switch, why the output shows me the same MAC address twice?

  the address is 00d0.58c0.4519 (bia 00d0.58c0.4519)

  I know, BIA is burned in address and is located on the ROM, but what is the idea behind this?

  EDIT: also would like to ask, why a router maintains an arp entry for its own interface, it seems that this is not the case on for example a Windows laptop...

  Best regards

  Adam

  Adam,

  Some interfaces allow you to configure user-defined MAC address:

   R1#show int f0/0 | i bia Hardware is AmdFE, address is cc00.0fac.0000 (bia cc00.0fac.0000) R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#int f0/0 R1(config-if)#mac-address 0200.0000.0001 R1(config-if)#do show int f0/0 | i bia Hardware is AmdFE, address is 0200.0000.0001 (bia cc00.0fac.0000)

  HTH

  Rolf

• Packet switching not EFC / what is 'classification of output EAC?

  Hello

  I noticed a 3945-DRY with fairly high CPU load without doing much, because there are more packages switching process that the CFR switched.

  To study, I did the following:

  Router #sh ip cef switching statistics feature

  Input characteristics IPv4 CEF:

  Feature road Drop consume Punt Punt2Host gave

  Access the list 24911921 0 0 14678240 0

  0 0 0 0 20433673 routing policy

  24911921 0 0 14678240 20433673 total

  Output features IPv4 CEF:

  Feature Drop consume Punt Punt2Host new i / f

  Class output EAC 715266717 0 0 0 0

  Total 0 0 715266717 0 0

  Characteristics of post-encap IPv4 CEF:

  Feature Drop consume Punt Punt2Host new i / f

  IPSEC Post-encap 1 655816389 0 0 0

  Total 1 655816389 0 0 0

  CEF IPv4 for us offers:

  Feature Drop consume Punt Punt2Host new i / f

  Total                            0          0          0          0          0

  Features of punt IPv4 CEF:

  Feature Drop consume Punt Punt2Host new i / f

  Total                            0          0          0          0          0

  Features local IPv4 CEF:

  Feature road Drop consume Punt Punt2Host gave

  Total                            0          0          0          0          0

  Punted them (= "punted" another mechanism of switching, not switched cef) packages for the feature 'EAC exit class' increase of ~ 1000 per second.

  This made me wonder, what exactly is the feature 'CEC output class'. As I can see in the following output, this feature is enabled on my Tunnel Interface:

  Router ip int tu0 #sh

  Tunnel0 is up, line protocol is up

  The Internet address is x.x.x.x/xx

  Broadcast address is x.x.x.x

  Address determined by non-volatile memory

  MTU is 1400 bytes

  Support address is not set

  Transfer of directed broadcast is disabled

  Multicast reserved joined groups: 224.0.0.10

  Outgoing access list is not defined

  Inbound access list is not defined

  Proxy ARP is disabled

  Local Proxy ARP is disabled

  Security level is default

  Split horizon is enabled

  ICMP redirects are never sent

  ICMP unreachable is always sent

  Mask the ICMP responses are never sent

  IP fast switching is enabled

  Fast on the same switching interface IP is disabled

  IP stream switching is disabled

  IP CEF switching is enabled

  Vector turbo IP CEF switching

  Turbo IP vector draw

  Tunnel VPN routing/Forwarding "xxx".

  Quick change IP multicast is enabled

  Fast switching of distributed IP multicast is disabled

  Flags of IP route cache is fast, CEF

  Router discovery is disabled

  Output IP packet accounting is disabled

  Accounting of IP access violation is disabled

  TCP/IP header compression is disabled

  RTP/IP header compression is disabled

  Policy routing is disabled

  Network address translation is disabled

  BGP policy mapping is disabled

  Input characteristics: process Packet Capture, check MCI, TCP adjust MSS

  Characteristics of the output: classification of output of EAC, PNDH redirect, adjust EAC ranking NAT, TCP MSS, QoS preclassification

  Display the characteristics of encapsulation: IPSEC Post-encap output classification

  WCCP redirect outgoing is disabled

  WCCP redirect incoming is disabled

  WCCP redirect exclude is disabled

  Someone tell me, what is "CCE output ranking" and why this is receptive used by my router?

  Hello Sebastian,.

  EAC is the engine of common classification. I think that its used to "match" traffic for features like qos, nat, etc.. ". Based on the "HS in you ' out, some features on the direction of the output are originally be punted packets. You can try "debug ip cef drop" for a few seconds while the meter is incremented, usually it will give a reason to punt. The most common reasons are listed below.

  ACL log or log-entry option (or)

  An unreachable next hop for a route (or)

  A missing arp entry for a next jump (or)

  Entry to arp for outside nat... etc.

  Please rate this post without fault if you found it useful. *

  Thank you best regards &,.

  Vignesh R P

• Hi ALL, did any attempt on the virtual computer NETWORK load balancing using HYPERV on UCS blades

  I try to configure the CASE server cluster by using the Unicast NLB on the virtual machine on different blades on the UCS, it works for awhile, then he abandoned packages.

  I heard that this screenplay of unicast is not supported in the UCS when she used END-host mode in the fabric interconnet...? any attempted before.

  Would it, I use the multicast mode is that something needs to be done on the FBI62020 or the LAN switch upstream. ??

  Header note I found on the implementation of UCS for mulitcast NLBL:

  Microsoft NLB can be deployed in 3 modes:

  Unicast

  Multicast

  IGMP multicast

  For series B UCS deployments, we have seen that the multicast and IGMP multicast work.

  IGMP multicast mode seems to be the more reliable deployment mode.

  To do this, the monitoring settings:

  All NLB Microsoft value "Multicast IGMP" nodes.  Important!  Check ths by logging into EACH node independently.  Do not rely on the MMC of NLB snap.

  An IGMP applicant must be present on the VLAN of NLB.  If PIM is enabled on the VIRTUAL LAN that is your interrogator.  UCS cannot function as applicant IGMP.  If an interrogator of functioning is not present, NLB IGMP mode will not work.

  You must have a static ARP entry on cheating it upstream pointing IP address Unicast NLB on the multicast MAC address NETWORK load balancing.  This need will set up, of course, on the VLAN of the NLB VIP. The key is that the routing for the NLB VLAN interface must use this ARP entry as a unicast IP ARP response may not contain a multicast mac address. (Violation of the RFC 1812)  Hosts on the NLB VLAN must also use the static entry.  You may have several entries ARP.  IOS can use a function of 'alias' of ARP. (Google it.)

  How Microsoft NLB works. -The truncated for brevity Mac addresses.

  TOPOLOGY OF NLB MS

  NETWORK VLAN 10 = subnet 10.1.1.0/24 IP load balancing

  VIP = 10.1.1.10 NETWORK LOAD BALANCING

  Arp entry static switch advanced IP 10.1.1.10 upstream to MAC 01

  NLB VIP (MAC 01, IP 10.1.1.10)

  NODE-A (AA, MAC IP:10.1.1.88)

  NŒUD-B (MAC BB, IP:10.1.1.99)

  Using the IGMP snooping and interrogator VLAN snooping table is filled with the mac NLB address and groups pointing to the appropriate L2 ports.

  MS NLB nodes will send the responses of IGMP queries.

  This snooping table could take 30 to 60 seconds to complete.

  Host on VLAN 200 (10.200.1.35) sends traffic to NETWORK VIP (10.1.1.10) load balancing

  It goes of course to VLAN 10 interface that uses the static ARP entry to resolve to address MAC 01 VIP NETWORK load balancing.

  Since it is a multicast frame destination it will be forward by the IGMP snooping table.

  The framework will arrive at ALL NLB nodes. (NŒUD-A & NŒUD-B)

  NLB nodes will use its load balancing algorithm to determine which node will manage the TCP session.

  Only one NLB node will respond to this host with TCP ACK to start the session.

  NOTES

  This works in a VMware with N1k, standard vSwtich and vDS environment. Where surveillance IGMP is not enabled, the framing for VIP MAC NETWORK load balancing will be flooded.

  NLB can only work with TCP-based services.

  As stated previously mapping an IP unicast to a multicast mac address is a violation implied by RFC 1812.

  TROUBLESHOOTING

  Make sure your interrogator is working. Just to clarify that this does not mean that it is actually at work.

  Wireshark lets check that IGMP queries are received by the NLB nodes.

  Make sure that the ARP response works as expected.  Once Wireshark again is your friend.

  Look at the paintings IGMP snooping. Validate the L2 ports appearing as expected.

  CSCtx27555 [Bug-preview for CSCtx27555] Unknown multicast with destination outside the range MAC 01:xx: are deleted. (6200 FI fixed in 2.0.2m)

  IGMP mode not affected.

  CSCtx27555    Unknown multicast with destination outside the range MAC 01:xx: are deleted.

  http://Tools.Cisco.com/support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtx27555

  fixed in 2.0(2m)

  Solution: Change the NLB mode of operation of "Multicast" to "multicast IGMP', which modifies balancing load NETWORK VIP MAC at 0100.5exx.xxx Beach, allows to transfer occur as expected.

  Q: and if I switch to switch mode, which means all of the profile and the settings on the servers are completely exhausted and I need to recreate them. ???

  A:Cisco Unified Computing System Ethernet switching Modes

  http://www.Cisco.com/en/us/solutions/collateral/ns340/ns517/ns224/ns944/whitepaper_c11-701962.html

  -There is no impact on the configuration, you have done service profiles.  they will continue to work as expected.  Mode selector has the FI behave more like a conventional switch.  Most notable is that Spanning tree will be activated and if you have several uplinks yew, tree covering weight will begin to block redundant paths.

  You need to review your topology and what impact tree covering weight.  Generally, we at the switch port upstream defined as "edge master", you want to delete this line.

  For pre-production and laboratory environment, PDI can help qualified with the planning, design and implementation partners.  Given to review the IDP site and open a case if you need more detailed assistance.

• Nexus 1000v, UCS, and Microsoft NETWORK load balancing

  Hi all

  I have a client that implements a new Exchange 2010 environment. They have an obligation to configure load balancing for Client Access servers. The environment consists of VMware vShpere running on top of Cisco UCS blades with the Nexus 1000v dvSwitch.

  Everything I've read so far indicates that I must do the following:

  1 configure MS in Multicast mode load balancing (by selecting the IGMP protocol option).

  2. create a static ARP entry for the address of virtual cluster on the router for the subnet of the server.

  3. (maybe) configure a static MAC table entry on the router for the subnet of the server.

  3. (maybe) to disable the IGMP snooping on the VLAN appropriate in the Nexus 1000v.

  My questions are:

  1. any person running successfully a similar configuration?

  2 are there missing steps in the list above, or I shouldn't do?

  3. If I am disabling the snooping IGMP on the Nexus 1000v should I also disable it on the fabric of UCS interconnections and router?

  Thanks a lot for your time,.

  Aaron

  Aaron,

  The steps above you are correct, you need steps 1-4 to operate correctly.  Normally people will create a VLAN separate to their interfaces NLB/subnet, to prevent floods mcast uncessisary frameworks within the network.

  To answer your questions

  (1) I saw multiple clients run this configuration

  (2) the steps you are correct

  (3) you can't toggle the on UCS IGMP snooping.  It is enabled by default and not a configurable option.  There is no need to change anything within the UCS regarding MS NLB with the above procedure.  FYI - the ability to disable/enable the snooping IGMP on UCS is scheduled for a next version 2.1.

  
  
  This is the correct method untill the time we have the option of configuring static multicast mac entries on
  
  the Nexus 1000v.  If this is a feature you'd like, please open a TAC case and request for bug CSCtb93725 to be linked to your SR.
  
  This will give more "push" to our develpment team to prioritize this request.
  Hopefully some other customers can share their experience.
  Regards,

  Robert

• SG300-10 - static DHCP IS * NOT * work - assignment using MAC

  Hello experts,

  I'm not an expert on Cisco switches, so I use the web gui to configure my switch.

  I created a range of IP addresses for my network and also set a different default VLAN - as I understand it it's "best practices".

  my default VLAN:

  199

  I deleted all other VLANS until I figured out how to set these static IP addresses.

  and all ports are assigned with the VLAN above *only*.

  If the IP range is defined as:

  192.168.11.0/24

  This is the info as it appears on the web-gui:

  vlan_199_ipServer

  255.255.255.0

  192.168.11.1

  192.168.11.254

  0d 0 h 1 m

  I put the renewal interval to 1 minute for debugging purposes. and I will he change once I have it working properly.

  This switch works as DHCP in the network server - but no static address don't seem to work.

  Instead, dynamic IP addresses are used by the clients/PC in this network.

  Among customers, there is Windows 8, Windows Vista, Ubuntu 12.04, Ubuntu 13.10 raspberry-pi raspebian...

  but there is no way that I can put then in a static IP address.

  I already entered the details, and there is a static IP list with the following information:

  INTELLECTUAL PROPERTY

  host name

  network mask

  MAC address

  and it's posting on the web-gui as:

  	IP Address	Host Name	Network mask	Identifier type	MAC customer/address identifier	Client Name
  	192.168.11.40	rpiDesk01	255.255.255.255	MAC address	B8:27:EB:D8:82:B6

  I am not sure if I have provided information suffient - please let me know if you need more clarification.

  My problem - how my static IP address to use instead of the dynamics?

  with respect,

  With these cisco switches stupid, that you must first allow clients to recievs its IP via dhcp and then watch the table liaison to see how he requested from the server, did she use a client or mac id.  Then create that he used a static entry using the same.  Remove the entry bind and arp entry and then connect the client again.

  I have this to complain over a year without doubt to nothing done.  The switch must be intelligent enough to understand one another, simple analysis and rectification of the lead byte if a customer id is provided by the customer.

• DROP in flow of the IPSec tunnel

  Hello

  I am trying to use a VPN, who worked on one connection ASA months on ASA9.1 (2). I've updated to ASA9.1 11 (6) and it has stopped working.

  This is the remote ASA5505s making an IPSEC connection-a network head 5520. I can ride preceding and following 2 and 11 9.1 9.1 (6) and while the configuration does not change, the VPN starts working on 9.1 2

  Vpn connects, but there is no packets sent or received...

  I get this packet tracer...

  Output of the command: "packet - trace entry tcp teeessyou 192.168.190.2 5000 192.168.195.1 detail 80.

  Phase: 1
  Type: ACCESS-LIST
  Subtype:
  Result: ALLOW
  Config:
  Implicit rule
  Additional information:
  Direct flow from returns search rule:
  ID = 0xae1308e8, priority = 1, domain = allowed, deny = false
  hits = 622, user_data = 0 x 0, cs_id = 0 x 0, l3_type = 0 x 8
  Mac SRC = 0000.0000.0000, mask is 0000.0000.0000
  DST = 0000.0000.0000 Mac, mask is 0100.0000.0000
  input_ifc = teeessyou, output_ifc = any

  Phase: 2
  Type: UN - NAT
  Subtype: static
  Result: ALLOW
  Config:
  NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
  Additional information:
  NAT divert on exit to the outside interface
  Untranslate 192.168.195.1/80 to 192.168.195.1/80

  Phase: 3
  Type: ACCESS-LIST
  Subtype: Journal
  Result: ALLOW
  Config:
  Access-group teeessyou_access_in in the teeessyou interface
  teeessyou_access_in of access allowed any ip an extended list
  Additional information:
  Direct flow from returns search rule:
  ID = 0xae24d310, priority = 13, area = allowed, deny = false
  hits = 622, user_data is 0xab6b23c0, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
  IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
  IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = teeessyou, output_ifc = any

  Phase: 4
  Type: NAT
  Subtype:
  Result: ALLOW
  Config:
  NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
  Additional information:
  Definition of static 192.168.190.2/5000 to 192.168.190.2/5000
  Direct flow from returns search rule:
  ID = 0xae1ea5a8, priority = 6, area = nat, deny = false
  hits = 622, user_data is 0xae1e9c58, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
  IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
  IP/ID=192.168.192.0 DST, mask is 255.255.224.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = teeessyou, output_ifc = external

  Phase: 5
  Type: NAT
  Subtype: volatile
  Result: ALLOW
  Config:
  Additional information:
  Direct flow from returns search rule:
  ID = 0xa9678858, priority = 1, domain = nat-volatile, deny = true
  hits = 105, user_data = 0 x 0, cs_id = 0 x 0, reverse, use_real_addr, flags = 0 x 0, Protocol = 6
  IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
  IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = none, output_ifc = any

  Phase: 6
  Type: IP-OPTIONS
  Subtype:
  Result: ALLOW
  Config:
  Additional information:
  Direct flow from returns search rule:
  ID = 0xae136910, priority = 0, sector = inspect-ip-options, deny = true
  hits = 622, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
  IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
  IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = teeessyou, output_ifc = any

  Phase: 7
  Type: VPN
  Subtype: encrypt
  Result: ALLOW
  Config:
  Additional information:
  Direct flow from returns search rule:
  ID = 0xaeec4328, priority = 70, domain = encrypt, deny = false
  hits = 65, user_data is 0xb7dc, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
  IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
  IP/ID=192.168.195.0 DST, mask is 255.255.255.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = none, output_ifc = external

  Phase: 8
  Type: NAT
  Subtype: rpf check
  Result: ALLOW
  Config:
  NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
  Additional information:
  Direct flow from returns search rule:
  ID = 0xae1eae48, priority = 6, area = nat-reversed, deny = false
  hits = 129, user_data is 0xae1e9d10, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
  IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
  IP/ID=192.168.192.0 DST, mask is 255.255.224.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = teeessyou, output_ifc = external

  Phase: 9
  Type: VPN
  Subtype: ipsec-tunnel-flow
  Result: DECLINE
  Config:
  Additional information:
  Reverse flow from returns search rule:
  ID = 0xaea9f6b0, priority = 69 = ipsec-tunnel-flow area, deny = false
  hits = 129, user_data = 0 x 0, cs_id = 0xaea999c0, reverse, flags = 0 x 0 = 0 protocol
  IP/ID=192.168.192.0 SRC, mask = 255.255.224.0, port = 0, = 0 tag
  IP/ID=192.168.190.0 DST, mask is 255.255.255.0, port = 0, tag = 0, dscp = 0 x 0
  input_ifc = out, output_ifc = any

  Hello Spencerallsop,

  I recommend to add the keyword "no-proxy-arp" the end of the NAT statement, so the ASA try to answer queries ARP for the traffic(VPN interesting traffic), also this last phase 9 usually shows ignored due to a filter VPN defined in sometimes group policy, make sure you have not a filter VPN in a group policy that affect this tunnel then you will need to do the following:

  1. remove the NAT statement:

  -no nat (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS

  2 fix the NAT statement with the keyword "No.-proxy-arp" :

  -nat (teeessyou, outside) static source any any destination static teeessyou_ENCODERS teeessyou_ENCODERS non-proxy-arp

  3 disable the VPN ISA SA:

  -claire crypto ikev1 his

  4. run the packet tracer to check that the L2L has developed,

  To be honest I wouldn't recommend move you to 9.1.7 since it has some problems with the ARP entries, and it affects AnyConnect SSL somehow, which is still under investigation.

  In fact, this bug affects 9.1.7 (may affect your environment):

  - https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy28710

  Please don't forget to rate and score as of this post, keep me posted!

  Kind regards

  David Castro,