Of VPN3000 VRRP

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• L2TP/IPSec and VRRP on Cisco VPN3000

  Hello. I don't know if this is the right forum, please excuse me if this is not (of course a pointer to the right we'd appreciate it :)

  I'm experimenting with the implementation of VPN 3000 Concentrator series VRRP, and it seems that when the unit of "backup" takes over, no L2TP/IPsec tunnel can be established more.

  When the switch takes place, the backup device takes over VRRP group IP addresses, which are the IP address of the master own as well on VPN 3000. Thus, the backup unit manages two different IP addresses, its own ad group.

  Well, what I observed using a sniffer is that while the IKE/IPSec packets come well to the group address, L2TP packets are by IP address of the backup device physical and clear instead of be encapsulated in IPSec travel packages. The client computer (PC Windows 2000) clearly ignores the L2TP packets and no L2TP/Ipsec tunnel can be established. PPTP tunnels work, however.

  The foregoing does not occur when the VPN 3000 master works, like the VRRP group addresses are the same as its own interface addresses.

  Now, VPN 3000 documentation or TAC documents explicitly say that L2TP/IPSec and VRRP are incompatible, but they do not mention compatibility as well (although they do mention the VRRP Protocol PPTP compatibility).

  Did someone better informed than me? Is there a technical reason for the incompatibility between L2TP with VRRP, or it's a bug any?

  Thank you

  Roberto Patriarca

  This has proved quite recently and a high severity bug has been open about it and is currently under review.

  See http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCeb77328&Submit=Search for more details.

  Nice work well in the survey.

• VRRP

  Hello

  I want to use VRRP between 2 M8024-K

  I use this:

  SWITCH1

  interface vlan 25

  IP 192.168.25.251255.255.255.0

  interface vlan 25

  VRRP 25

  VRRP 25 mode

  VRRP 25 ip 192.168.25.254

  interface of runway 25 VRRP Vl25

  VRRP timers advertising 180 25

  VRRP 25 accept-mode

  SWITCH2

  interface vlan 25

  IP 192.168.25.252 255.255.255.0

  VRRP 25

  VRRP 25 mode

  VRRP 25 ip 192.168.25.254

  interface of runway 25 VRRP Vl25

  priority VRRP 25 254

  VRRP timers advertising 180 25

  VRRP 25 accept-mode

  I can ping.251 et.252 but pas.254

  SH short vrrp

  Vl25 25 254 192.168.25.254 Enable Initialize

  #show vrrp

  Admin Mode..................................... Enable

  Router checksum errors... 0

  Errors of router Version... 0

  MANAGED router errors... 0

  VLAN 25 - group 25

  Primary IP address... 192.168.25.254

  VMAC address... 0000.5E00.0119

  Authentication type... None

  Priority....................................... 254

  Configured priority... 254

  Interval (in seconds) of advertising... 180

  Accept Mode... Enable

  Anticipate the fashion... Enable

  Anticipate delays... 0

  Administrative mode... Enable

  State.......................................... Initialized

  Timers learning mode... Disable

  Description...

  Interface to track... Vl25

  Interface State track... Upward

  Interface decrement priority track... 10

  No path is followed for this combination managed and interface

  We have to change the priority of the router B to 195, and the two #vrrp 25 pre-empt enable. See if that has no effect.

• VRRP on 6224

  I read the Protocol VRRP implementation documents, and it seems pretty simple. The question I have is this:

  The switch updates the configuration of the backup/slave switch automatically when changes register to the startup-config? I basically just want to have a relief, I can move the cables in case of fault or failure of the main switch. I have not redundant L2/L3 in place as indicated in the documentation. If VRRP is not the way to go, I would like to just tips on how I can have the secondary switch receive config of switch without having to change the config at once, each time a change is made. Maybe I don't know what this is called.

  Any help would be appreciated!

  see you soon,

  Tim

  One option is to stack the switches.  You always have the paths of physical connection on two physical switches.  Where we went down, and then the other would still be online and passing traffic.

  In a stack, the config is updated when the similar to the process of VRRP backup.

• Design of switching two ISP and HSRP/VRRP

  Hey Cisco community,

  We have two ISP currently in use, divide us its routes to two routers with a sleep using HSRP active routers and also try VRRP. But the passive router / Eve cannot receive all packages in other ways we are testing using route determination.

  Is it possible to activate the active HSRP/VRRP configuration so that when a router is in standby mode or passive it can still receive packets from other routers.

  Please do not hesitate to suggest or comment

  Thank you

  Hello
  standby-passive router just wait for failure of the active router and then take the notes the active role.

  Try using GLBP (Gateway Load Balance Protocol) which can achieve what you mentioned above.

  Or you can configure two groups VRRP and 1 group first active router and 2nd group the second router will be active. And then, you statically configure hosts on the network who should use what virtual gateway. This isn't a smart solution.

  HSRP can balance only at the level of VLAN. This means that you need to divide your customers into multiple VIRTUAL LANs.

  Please anyone correct me if I'm wrong.

• Issue of ASR9K - Upgrade 4.2.3 to 4.3.4 - VRRP

  Hi all

  After upgrading 4.2.3 to 4.3.4 when faulty configuration checking, I found the following question about VRRP:

  RP/0/RSP0 / CPU0:A9K - #sh configuration LAB02 failed start
  Mon May 5 16:24:19.094 WEST
  !! 15:13:09 UTC Monday, may 5, 2014
  !! The SEMANTIC ERRORS: This configuration was rejected by
  !! the system due to semantic errors. The individual
  !! errors with each configuration command has failed can be
  !! found below.
  
  router vrrp
  interface TenGigE0/0/0/0.3701
  ipv4 address family
  VRRP 1
  priority 200
  !! % "vrrp" detected the condition 'Warning' "Virtual MAC already in use on this port"
  timer 1
  !! % "vrrp" detected the condition 'Warning' "Virtual MAC already in use on this port"
  address 200.100.1.100
  !! % "vrrp" detected the condition 'Warning' "Virtual MAC already in use on this port"
  !
  !
  !
  !
  End

  According to bug CSCed75140, I expect this problem to be solved from 4.3.0...

  Any idea?

  THX,

  Pedro

  Pedro,

  There must be a bug missunderstand you cite is to improve the notification of error with this unsupported configuration, it does not the config caught in charge. Some details on this question since the release of bug notes:

   Problem Symptom: In a router running IOS-XR, configuring the same virtual router id(VRID) on multiple sub-interfaces of the same physical interfaces is NOT supported for HSRP/ VRRP Workaround: Use different virtual router id for the different sub-interfaces of same physical interface Further Problem Description: Example of unsupported config:  router vrrp interface GigabitEthernet0/5/0/38.175 vrrp 1 ipv4 10.186.0.1 ! interface GigabitEthernet0/5/0/38.176 vrrp 1 ipv4 10.186.0.9 ! !  If you have two groups configured with the same virtual router id, this means that they have the same virtual MAC address (as this is derived from the virtual router ID). When VRRP is in Master state, it installs an entry for it's virtual MAC in to the MAC filter for the interface over which it is running. However, it is not possible to program the MAC filter per sub-interface. Therefore if VRRP is running over a sub-interface it is the MAC filter of the underlying physical interface which is actually programmed (although VRRP has no way of being aware of this). If using the unsupported configuration, you have two Master groups with the same virtual MAC address on sub-interfaces of the same physical interface. In this case there will only be one MAC address installed in the filter of the physical interface. When one of these groups is removed by configuration or it transitions out of Master state, it removes its virtual MAC address from the MAC filter of the underlying physical interface meaning there is now no MAC address installed at all and the VRRP feature for the remaining Master group will no longer work. The root cause of the problem is that the MAC filter cannot be programmed per sub-interface.

• VPN3000 filter

  Dear members of the Forum,

  Is it possible to create a rule on the VPN3000 that may return a "TCP RESET" packet?

  As long as I can see on the menu, the setting is only to allow or deny a protocol to layer 4 (TCP, UDP, etc.) level.

  Appreciate for any response.

  Best regards

  Engel

  No, not possible. I'm sorry.

• Filter the limitation on VPN3000 (is it a bug or a specification?)

  Dear all,

  According to Bug ID CSCdw86558 , number of filter that must be created on an internal VPN3000 is limited to '100' for all VPN3000 series. Does anyone have information when this bug? Any consideration to the limit or is it already in the roadmap for the next release?

  Any help will be greatly appreciated.

  Best regards

  Engel

  This bug has been resolved in the 3.5.3 code versions and higher. All codes 3.6.x should understand it. They simply deleted the code checking, so you can now have more than 100 and it won't complain. Now there is no limit on how many filters you may have.

• VPN3000 as an end of GRE tunnel

  Dear all,

  Is it possible for a VPN3000 to close a GRE tunnel by its own interface (private or public)? As long as I see in the GUI, looks like there no option for config one end of GRE tunnel. You can configure a GRE filter, but it comes through a GRE traffic, I'm right?

  Best regards

  Engel

  Engel,

  You can not cancel a Grateful for lan-to-lan tunnel based on a hub (as in IOS). Protocol PPTP uses GRE as the transport protocol, which supports a concentrator of VPN3K (and therefore filters and debugs for GRE)

  Hope that answers your question

  Jean Marc

• Can not install on VPN3000 ROOT CA certificate

  Hello

  I try to configure VPN3000 to support the EAP - TLS authentication, when we use the Cisco VPN client to connect to VPN VPN3000, GW, but I can not install on VPN3000 ROOT CA certificate. The system error information are "trusted certificate Setup error: cannot install cerfiticate confidence.» My gear is VPN3005, and the version of the software is 3.6.3. I sent the following documents: CERTIFICATE MANAGEMENT for VPN3000 and VPN3000 CONCENTRATOR SERIES REFERENCE VOLUME II. Grateful for your help!

  Best regards

  chelp

  The following url will help you.

  http://www.Cisco.com/en/us/partner/products/HW/vpndevc/ps2284/products_administration_guide_chapter09186a00803ef352.html

• 3xSG500X-24 VRRP and G 10 GAL/BATTERY

  Hi, im interested to know if the following construction sensible and feasible:

  1. 3 SG500X interconnected via Cable SFP + 10 3 onto the stack. This is to get maximum troughput and unique management over all ports switch
  2. VRRP configuration on the 3 switches. This is to get a setup of router / Vlan redundant
  3. Connect 3-host ESX each with a dual port 10 GB SFP + for the switches. This configuration of ESX HA, so in the case 1 switch or 1 host fails the virtual machines will still be available (if failed host for all users, in the event of a failure of the switch for all users less users of the switch failed...

  

  4. If the schematized above scenario is possible, is there a way to control the bandwithd on ports of the battery to avoid saturation on the side of esx?

  Thanks for all the answers helpful and sorry for my English...

  Ulrich, you can set a limit for frequency of entry and exit.

  config t

  interface xg1/1/1

  rate-limit-

  In addition, it is access via GUI QOS-> General-> bandwidth

  -Tom

• Recovery of VPN3000 concentrator PSK

  Is there a way to see the keys of Group on a VPN3000 in clear text, either on the device or through 3rd party tools?

  TIA,

  Luke

  Hello Luke,.

  I hope that using the information below.

  Under Administration--> access--> access settings

  Encryption of configuration file: check the ZERO, then apply.

  ---------------------------

  The file can be viewed from the following tab

  Administration---> file management

  You will find the configuration file and the backup of config file. It's the same button 'see' that you can click to view the file now.

  http://www.Cisco.com/en/us/docs/security/vpn3000/vpn3000_41/Administration/Guide/access.html#wp1416303

  * Of the Lab VPN3000 snapshot *.

  [group 3]

  name = Netpro

  password = netpro

  Kind regards

  Arul

  * Please note all useful messages *.

• VRRP with (er) strong authentication?

  It seems that IOS supports currently VRRP with simple text password authentication, only. Can a person from development comment on when we might see the stronger IP Authentication Header variant for VRRP security in IOS?

  You are right regarding the current VRRP with simple text password authentication. MD5 encryption supported VRRP version 2 will be integrated into the IOS around 2nd semester 2003.

  Thank you

  Christophe

• Redudancy VPN 3030 VRRP.

  Hello

  So I read on the redudancy VRRP 3030 in the example that I see on the site Web of Ciscos http://www.cisco.com/warp/public/471/vrrp.html it seems that I only need two ip addresses. The main hub uses both ip VRRP addy for its own interfaces and the actual address of VRRP. Where as the backup hub watches the VRRP address and guess what addy when it no longer, but he still has is own ip address for its interfaces.

  I can see the three address used for VRRP for ip address, virtual and two others for the physical interfaces on the segment. Has anyone else done this and I read this right?

  Unfortunaly I really do test this with the exception of a brief outtage window and want to make sure I have everything well.

  Thanks for the replies and I will note all.

  Patrick

  You read it right. I made a couple of these deployments, you can follow this guide to the letter.

• Disable Xauth on VPN3000

  Hello

  Faced with a situation where I need to exchange a PIX configured for IPSEC VPN with vpngroup simple and no xauth, there are about 180 remote vpn clients.

  I need to exchange for a VPN3000 (proof of concept tests) and need to know if it is possible to disable xauth on this platform? Basically, I want to just use a group name and the password to authenticate remote users.

  I don't want to use an external authentication server as this isn't a permanent solution.

  The end user of production are not the most intelligent and almost certainly get confused when the xauth is displayed, even if I was able to config a username for the entire installation.

  Is this possible?

  See you soon,.

  LR

  It is good to hear that your problem has been resolved.

  According to cisco,.

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