Cisco VPN :: 2811 / 2921 - Show Crypto Isakmp Sa Is Empty / No SAs Shown?
Nov 24, 2012
i repalced old cisco router 2811 with new one 2921 , all works except crypto map VPNs routers can ping each other , ACLs are not applied to outbound interfaces show crypto isakmp sa is empty after i make same configuration on a new router 2921 config crypto isakmp policy 10
hash md5
authentication pre-share
crypto isakmp key key address Y.Y.Y.Y no-xauth
[code]...
keys match , crypto isakmp policy is same , IOSs supoort VPN .interess traffic alse been initiated from both side and all worker in old cisco router with same configuration?
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Nov 16, 2011
I replaced old cisco router 2811 with new one 2921 , all works except crypto map VPNs routers can ping each other , ACLs are not applied to outbound interfaces show crypto isakmp sa is empty after i make same configuration on a new router 2921 config.
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Feb 25, 2012
I have setup ipsec VPN in my C2811 router but when "show crypto isakmp/ipsec sa" shows nothing. Remote end point is an "ASA5520". Does it indicates that the remote ASA5520 not yet configured?
Code...
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Nov 28, 2012
I have installed a new 2901 router with the IOS version 15 code (c2900-universalk9-mz.SPA.152-3.T.bin). I have a template config that I have created for my remote VPN routers that I have been using on 2811 routers with version 12.4 (c2800nm-advipservicesk9-mz.124-24.T1.bin).I do have the securityk9 active on the 2901 software
Technology Package License Information for Module:'c2900'
-----------------------------------------------------------------
Technology Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------
ipbase ipbasek9 Permanent ipbasek9
security securityk9 Permanent securityk9
uc None None None
data None None None
Issue is when I do a "show crypto session" the GRE tunnels session status read down on the 2901 router but on the 2811 session reads up-active. Everything is working and I am routing over the GRE Tunnels.
[Code] ......
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Jun 26, 2011
I have to connect one of our it labors with some ec2 instances in amazon vpc. I downloaded a configuration file from amazon which starts with the command
crypto isakmp policy 200
My router tells me that he does not know crypto isakmp.
I searched on the internet and found that i have to install a specific license, but unfortunately i cannot find which license i have to install.
The show license command show following licenses
AdvIpServices active
AdvSecurity active
advsecurity_npe, ios-ips-update, waas_Express no state displayed
ssl_vpn active but eula not accepted
I found that i can accept the eula license with license boot module c880-data technology-package SSL_VPN command
But this command is also not available on my device. getting the crypto isakmp command working?
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Aug 21, 2012
I have a Cisco 881 ISR (CISCO881-SEC-K9) and have the advanced security license installed and enabled/active and in use (see screenshot). However, the isakmp crypto module is not available.
[code]....
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Sep 27, 2012
Just looking at a new clients setup and they have a ISAKMP vpn to the old security company I am trying to remove...I am fairly new to cisco, I actually know how to setup the ISAKMP policies, acl's etc but never had to completely remove one before All I can find is Clear Commands which seem to just flush the config not actually delete any of the policy etc...Its not that urgent as all passwords are changed on the domain and the cisco, the usernames have been deleted as well.
#show crypto isakmp peers
Peer: ** Port: 500 Local: **
Phase1 id: **
#show crypto isakmp policy
Global IKE policy
[code]...
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Apr 19, 2011
I have been looking around and I can not find the " crypto isakmp policy " command on this Cisco Router 1941. I just wanted to setup a regular IPSEC Lan to Lan tunnel and surprise, the command is not there. Do I have the wrong IOS? I thought that a K9 image would do the trick. [code]
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Jan 11, 2012
I'm running a IPSec VPN between a 5520 ASA and a 2811 router. The ASA has a static IP and the router has a DHCP interface.The VPN seems to work fine once I get done clearing old SAs, but each new IPSEC SA creates a new ISAKMP SA on the router? There are multiple subnets that need to create multiple IPSEC SAs. Eventually I can clear the older ISAKMP SAs and get all the traffic on one ISAKMP SA, but until I clear older SAs, new associations won't form. Why the router (initiator) would keep creating new ISAKMP SAs and not use an established one? Using PSK, aggressive mode and no PFS. ASA has another dynamic crypto map with lower priority than this one. Using FQDN for identity on the router. ASA version 8.2(5) and IOS is 12.4(20)T1.
Must be something I'm not understanding. The ASA says no established SA and drops the new SA attempt until I clear older ISAKMP SAs out of the router. Interesting, the first few IPSec SAs form when the tunnel initially comes up. I assume the initial requests are getting cached and work immediately after the first ISAKMP SA forms, but subsequent IPSec SA attempts will fail. Once all subnets are talking with 1 ISAKMP SA, rekeys don't cause any problems. Since the router subnets have to instantiate the new IPSec SAs, this is a real pain to go through anytime the WAN/VPN fails.
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Aug 29, 2012
I want to do something with IP SLA and started by estabilishing a baseline.
I'm trying to check history on an ASR. I tested same config on a 3845 and was forgetting the "history filter all". After this I could see history table on 3845 but still history is empty on the ASR1006. The operation started because I can see information with "show ip sla statistics".
know if i missed something or maybe this is not supported in ASR1006?
re-ld-tcc-02_ASR1006#show vers
Cisco IOS Software, IOS-XE Software (X86_64_LINUX_IOSD-ADVIPSERVICESK9-M), Version 15.2(1)S2, RELEASE SOFTWARE (fc1)
[Code]......
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Aug 18, 2011
In a basic VPN l2l scenario using ezVPN, server behind NAT device, client using 3G. What would be the reason to have in the output of the show crypto ipsec sa, a current peer different from remote crypto endpoint on the server ?
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Mar 14, 2013
I created some acess-lists, and you can assign a logging level to this access-list. Now this ACL has a lot of hits, so i want to see whats happening. Only the log I then see is completely empty. I cannot figure out how to get some info in that log.
I think there is some global logging setting i probably need to enable in order to get anything logged at all, but i cannot figure out which.
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Jul 15, 2012
My router is Cisco 2811 with IOS version 12.4(22)T1. It had established IPSec with another peer (203.*.*.250 shown below) for long until recently we make it re-establish IPSec VPN with another peer (203.*.*.30 shown below). It showed that the new sa is active but the result still showed there were 4 deleted SAs. The 4 obsolete sa entries won't vanish no matter what I do i.e. reset the interface, re-create crypto map, clear all sa and etc.
From numerous testings we knew that the VPN doesn't work even the desired sa is there remaining active. I reckon it has something to do with those deleted sas ( i mean it is supposed to show only the last one if it is working fine ). I don't know how it would be come like this as we did pretty much the samething on other VPN routers with no problems.
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May 4, 2011
I have a Cisco 2811 and a Cisco 1841 and I cannot get these cards to show up. My IOS for the 1841 is c1841-spservicesk9-mz.124-6.T7 and my IOS for the 2811 is c2800nm-spservicesk9-mz.124-17. When I do a "sh diag" the cards come up as: "unknown daughter card WIC module is not supported/disabled in this slot".
So I am guessing I need a different IOS.
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Mar 13, 2013
I have configured a vlan interface on a 3750 switch. there is aprox 4Mb active traffic flowing through the interface, but when I do a "show interface vlan (vlanid)" the output show zero bits in and zero bits out. Its a typical L3 config with one IP on the vllan interface acting as the gateway for the VLAN devices. Is this a normal behaviur ? and if so is there any way to get the traffic in/out stats. The end PC/devices are connected to this switch via an L2 TRUNK and I dont have access to the L2 switch on which the actual devices connect. so cant get the real time stats of those interfaces.
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Jan 29, 2012
How to understand "show sessions" and "show connection" commands? And what is the difference between the two?
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Feb 3, 2012
Is 3DES on ISAKMP considered to be secured for your average site (other options are AES/DES)? I'd imagine AES should be much stronger but what about DES, is that considered adequate or broken? Is there any proof of concept attack against 3DES on ISAKMP (or ISAKMP in general)?
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Sep 13, 2011
I'm currently dealing with a weird problem on a Cisco RVS4000. I'm trying to connect to a IPSEC VPN Gateway (NETASQ) located on the LAN side of the RVS4000. I'm using Green bow vpn client on the WAN side of the RVS4000. Basically I'm trying to get through the RVS.My VPN config is OK because i tested it on the LAN side of the RVS.
The RVS is configured like this: NO VPN configured.
Block WAN Request :OFF
FIREWALL,IPS,DDOS are OFF
NAT forwarding on for UDP 500 and 4500 directed from the wan to the ip of the VPN gateway. Seems right because iv managed to do this with other routers (different brands) on another site.I've wire sharked my vpn client and i keep getting ICMP destination unreachable (PORT UNREACHABLE) after my ISAKMP launching packet.Can the RVS nat these ports ?
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May 27, 2012
Facing issue with 2960G switch , where its do not display "logging trap informational " in show running and show startup .where its showing all other levels from 0 to 5 and 7 after configuration and save commands. [code] after config getting saved , it do not shows in show runn or in show startup while for all other levels it do show the config lines .I tried the same on 12.55.SE release also but its same results . Is this a limitaion of this platform, is there any doc explaining the same for reference. [code]
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Jun 18, 2011
I have a cisco 1760 with running VIC-2FXO (working fine). I'm now trying to replace that line with an ISDN line through a VIC2-2BRI.
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Aug 18, 2012
cisco 878 configured to accept client vpn requests. From client prospective people get error 412 and they can't connect. Not sure what s wrong, following configuration and debug isakmp. Autentication is through a radius server.
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May 23, 2012
crypto map mapName 20 match address NAME_20_cryptomapcrypto map mapName 20 set peer IPADDRcrypto map mapName 20 set transform-set ESP-3DES-SHAcrypto map mapName interface IFNAMEcrypto isakmp identity addresscrypto isakmp enable IFNAMEcrypto isakmp policy 10authentication pre-shareencryption 3deshash md5group 2lifetime 86400crypto isakmp policy 30authentication pre-shareencryption 3deshash shagroup 2lifetime 86400crypto isakmp policy 50authentication pre-shareencryption aeshash shagroup 2lifetime 28800(code)
I need to be sure that when traffic matches access-list "NAME_40_cryptomap" Isakmp policy 50 are used. And then traffic matches "NAME_20_cryptomap" isakmp policy 10 are used. How do i link the crypto map with the specefic isakmp policy?
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Jul 26, 2011
I upgraded my Cisco asa from 7.2 to 8.4 system image. Now the old style syntax isakmp policy is not working anymore and I am not able to write a isakmp policy to being used for remote access VPN.
on many examples on Cisco site I have seen that it is always used Cisco any connect client installed on ASA. this means that the old configuration compatible with Cisco vpn client IPSEC is no more usable ? or what kind of syntax I have to use to configure remote access VPN ? for example these commands are not working anymore.
hostname(config)# isakmp policy 1 authentication pre-share
hostname(config)# isakmp policy 1 encryption 3des
[code]...
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Dec 14, 2011
I have a couple of clients which are using the 3g modem to connect to ASA.The channel was sometimes "noisy" and therefore ipsec isakmp is doesn't work.Client losts vpn connection ,but on asa i can see it as connected(connection was in "freeze" state).
It's look like this :
[code]...
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May 10, 2011
We have a PIX firewall 515E running version 6.3(4) and there are few site to site VPN's installed on it. We want to find out the isakmp key for those VPN tunnels. On ASA, We can run the command "more system..." and it displays the key, but it seems it doesn't work on the PIX 515E.
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Jun 29, 2011
I am currently experiencing an issue with an IPSEC Tunnel between a Cisco892-K9 (c890-universalk9-mz.124-22.YB.bin / Feature: advipservices) and a Checkpoint VSX R67.
After reloading the router the tunnel is stable, but afterwards we loose the connection to the LAN unexpectidly (max. time of the connexion is ~2h30).
In fact after a reload the first ISAKMP SA is well negotiated with conn-id 2001 and after a certain amout of time the connexion is lost always associated with this debug message =>
ISAKMP:(2001):error from epa_ikmp_gen_ipsec (QM_IDLE )
ISAKMP:(2001):Unable to generate IPsec key for 799280698!
ISAKMP:(2001):deleting SA reason "Death by retransmission P2" state (I) QM_IDLE (peer 194.X.X.X)
and so on ....
We supposed it was related to DPD messages so we deactivated the keepalive (no crypto isakp keepalive). We tried to play also with the ACL matching the crypto map (currently from local subnets to any), but still no luck.
When it is stable the ‘show crypto isakmp sa’ indicates a isakmp sa ‘QM_IDLE / ACTIVE), and when the problem occurs the active ISAKMP SA is deleted and recreated (in ACTIVE state) continuously : conn-id 2001, 2002, 2003, 2004 etc...…but still no access to the LAN.
My main question is to know if someone has already know the signification of the previous ISAKMP debug messages (along with the total debug message + crypto conf from the beginning of the problem) =>May it be a platform support (near 200 ipsec flow in use => most subnet to subnet flow, few subnet to host flows- 200 users on site) , compatiblity, crypto map acl …???
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Apr 22, 2012
I am trying to set up a site to site VPN tunnel using GRE over IPSEC. Below is the configuration from both routers and debug output. I'm scratching my head on this one. I'm using two Cisco 7600 routers with SSC-400 SPA modules and 720 Supervisors. The IOS on R1 is 12.2 SXI2 and R2 has 12.2 SXI3.
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Apr 27, 2011
My company recently failed a PCI scan because our router was returning 56bit des encryption for isakmp negotiation on an existing default isakmp policy. How do I remove this default isakmp policy. I am not running 12.4(15)T1 so the no crypto isakmp policy default does not work. Is there any way other than upgrading the IOS?
Is there any way to configure a maximum number of isakmp policies that an authenticating router will check? I have 2 configured higher priority ISAKMP policies. Maybe if there is a command to limit the number of isakmp policies the router checks, that would eliminate this default policy being matched?
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Jun 9, 2011
I've used Wireshark sniffer and one of the outputs was there was a loop, wireshark produced a mac address lets say its asdfgh so I looked it up on my core switch but there is no asdfgh on it's mac address table.
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Oct 23, 2011
LMS 3.2,the devices are not shown in the CS.
In CS Device management no devices are shown(0 devices).But devices are shown in DFM,RME and IPM.
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Apr 12, 2011
We tried some time ago getting David's XP notebook and his Win7 desktop to share the Internet connection that his desktop has via an ADSL modem and telephone line.We wanted to get the two PCs to communicate with each other via the Wi-Fi adaptor card in the desktop and the built-in Wi-Fi adaptor in the notebook and then to share the Internet connection. We had no success.Last weekend we tried to get David's Win7 laptop and Win7 desktop to share the Internet connection that his desktop has. No success again.At the moment each computer lists the other one in its "My Computer" page.he TrendNet Wi-Fi software in the desktop indicates that it has 100% signal strength from the laptop.Both computers are set to "Home" type networks.We can start a Home Group on either computer but cannot get the other one to join - an error is reported. We use the correct password when trying to join - the password displayed by the other computer when its Home Group is created.We cannot get the ICS service to stay started. After attempting to start it an error is reported that says "ICS service started and then stopped".
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Feb 17, 2011
I have a DIR-635 and is rev B3 but this is not shown on the dlink website..
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Jul 1, 2011
By reruning discovery with new seeds etc I have more devices discovered. Howeverr they are not shown in the inventory, only in the Device Discovery Summary however.
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