Cisco WAN :: CERM-4-Tunnel Limit Error On 2901
Oct 11, 2012
I'm getting the following error in the log of a 2901:
%CERM-4-TUNNEL_LIMIT: Maximum tunnel limit of 225 reached for Crypto functionality with securityk9 technology package license.
I'm a bit confused by this since there is only 1 active SA at the time.Here is some more info:
2901#sh crypto eli
Hardware Encryption : ACTIVE
Number of hardware crypto engines = 1
CryptoEngine Onboard VPN details: state = Active
Capability : IPPCP, DES, 3DES, AES, IPv6, GDOI, FAILCLOSE, HA
IPSec-Session : 768 active, 2800 max, 0 failed
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Nov 6, 2012
I try to make a gre tunnel with 2 cisco routers 2901, ping responds between tunnel ip's ends, but I don't have pings from the pc's inside the networks. [code]
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Nov 5, 2012
I try to make a gre tunnel with 2 cisco routers 2901, ping responds between tunnel ip's ends, but I don't have pings from the pc's inside the networks.
[code]....
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Jul 6, 2011
I've been looking to see if its possible to create a GRE tunnel between a Cisco 2901 with 3 adsl WIC cards and a Cisco ASA.The Cisco 2901 is at our remote office and we have 3 adsl lines for resillience as they tend to go down alot.The Cisco ASA is at our Head Office sitting behind our ISP's managed router.
The desired end result would be to have three GRE tunnels, 1 for each DSL line terminating on the ASA at head office and use EIGRP routing protocol to move traffic across to another tunnel should one fail, and encapsulate all of that with IPSEC.
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Jun 16, 2011
I have a customer I've built a webvpn tunnel for.Users on this tunnel need to have http access to a server at 10.1.1.12 and nothing else.That's fine, but in order for name resolution to work properly they need to be able to send DNS requests to 10.1.1.9.I'm working with two different access lists, my non access list (nat 0) and my split tunnel access list. I can't specify ports in the nat 0 access list, but I did try writing my split tunnel access list as follows:
-access-list split permit ip host 10.1.1.12 172.16.4.0 255.255.255.0
-access-list split permit udp host 10.1.1.9 eq 53 172.16.4.0 255.255.255.0
When I do that users can access the 10.1.1.9 dns server, but they can hit it on anything (ping, 3389, etc.).I'm trying to figure out how I can limit them so they will only be able to pull dns but nothing else.They have the Any connect Essentials license, so unfortunately a clientless VPN is not an option. Is there some other access list I can interpose that will limit things the way I want?
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Dec 12, 2012
We have approx 40 branch offices - all of which are connected to a single core site over VPN Tunnels using various gear. At one particular site, we are having issues with the tunnel dropping sporadically throughout the day - some days it happens 10 times, some days it happens none. This just randomly started happening two weeks ago, without any changes taking place. Since it started happening, I have upgraded the code to latest versions, but still the issue persists. This particular site has a 2901 and connects back to a 2951.
Below is the output from:
debug crypto ipsec
debug crypto isakmp
[code].....
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Nov 22, 2012
I am having a hard time trying to configure DMVPN with the tunnel being sourced via a loopback interface. All routers are Cisco 886 routers which don't have L3 ports.That is why I used SVI interfaces, and have configured the L2 ports (Fa0, Fa1, etc.) with the command switchport access vlan.The problem is that I am receiving Invalid SPI error's only on the Hub router and I have no clue what could be the problem, because they use exactly the same parameters for IPsec. [code]
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Nov 2, 2009
On my ASA5520 I am trying to do a IPSEC tunnel between two sites. When I ping the protected network on the other side I get this when debugging IPSEC:
IPSEC(crypto_map_check): crypt o map man map 20 does not hole match for ACL man1
Not too sure what this means...
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Sep 20, 2012
I have the tunnel set up, but when I try to renew and release it pops up with this error.
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Oct 28, 2012
I am planning to buy a router for my hotel and I would like to know is it possible to limit the bandwidth limit to the guests? And the admin computer can utilize the maximum speed? it it possible to create a login page paper when some one enters my wifi connection?
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Oct 31, 2012
need to know the OSPF best design. I have a customer currently running their OSPF only in two area. Area 0 is provider reside and area 1 reside 700 hundred over of router including HQ router and remote branch router connecting to metro-E 10Mbps networks. Is this design have any weakness? Area 1 about 800 hundred router reside in, the HQ model is cisco router 7200 and remote end is cisco router 1841.Let's say they want a solution, for 3G remote router connect back to the HQ using Lease line with a fixed IP. Using DMVPN and OSPF communicating back to HQ. What should we aware when designing and implementing for the OSPF best practice. They have 700 hundred over remote branch need to terminate back to their HQ. I read cisco recommend an area should not be more than 50 router and per-area no more than 28 area.
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Jul 21, 2012
We have ASA 5520 acting as the VPN Server and Cisco 1941 router as EZVPN client. Since last few days client is not able to establish vpn connection. 1941 router is continuously generating the below log messages
001569: Jul 22 12:19:05.883 ABC: %CRYPTO-4-EZVPN_SA_LIMIT: EZVPN(VPNGROUP) Split tunnel attributes(51) greater than max allowed split attributes(50)
001574: Jul 22 12:19:07.835 ABC: %CRYPTO-6-EZVPN_CONNECTION_DOWN: (Client) User=vpn_user Group=VPNGROUP Client_public_addr=<client public ip> Server_public_addr=<server public ip>
004943: Jul 22 11:32:42.247 ABC: %IP_VFR-4-FRAG_TABLE_OVERFLOW: Dialer1: the fragment table has reached its maximum threshold 16
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Jan 9, 2011
i have a 7201 router with NPE-G2. i have a design which i have the option to send all the traffic through a GRE tunnel or a L2TPV3 tunnel.which method is more CPU consumption ?
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Sep 23, 2012
I'm in process of purchasing a new Cisco routers for our branches that will be used primary to enable IPSec virtual tunnel interfce with "tunnel mode ipsec ipv4". does the default IOS IP Base supports this feature? or i need to purchase DATA license or SECURITY license?
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Oct 17, 2012
I am using a Cisco RV110W (Firmware 1.2.09) in a branch and I would like to create a VPN Tunnel to another site that has a Cisco RV042 (firmware v4.2.1.02)
What would be the correct Configuration? the current configuration I am using is
in the RV042 i am using
Check Enable
Local Group Setup
Local Security Gateway Type : IP Only
IP Address : RV042 Pulbic IP address
[Code].....
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Jul 24, 2012
Environment :linksys wrt300n v1.1 which can have ddwrt-mega. Willing to tunnel all lan's outbound traffic through an ssh tunnel.
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Jan 23, 2012
There are a few situations were I'd like to be able to use the locally configured account on a device but still have ACS in place.I want to complete this WITHOUT adding the locally configured account into ACS.I have tried setting the advanced option under Identity for if an account is not found to "Continue" however this causes the account to be allowed as long as a password is typed (any password, as long as its not blank).
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Nov 9, 2011
What ISO do I need to purchase to get Cisco IOS Firewall on a Cisco 2901 - is it just IP Base or do I need one of the Security IOSs?
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May 24, 2011
I have a 1-Port 3rd Gen Multiflex Trunk Voice/WAN Int. Card - T1/E1 in a 2901 that I want to configure for data only (T1 connection to the Internet)I don't see any options in the IOS for using this thing as a serial interface (data), only options for configuring PRI/ISDN.
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May 25, 2011
The license has been installed onto the router. Here is the relevant out from the show license all:
License Store: Primary License StorageStoreIndex: 0 Feature: ipbasek9 Version: 1.0 License Type: Permanent License State: Active, In Use License Count: Non-Counted License Priority: MediumStoreIndex: 1 Feature: WAAS_Express Version: 1.0 License Type: Permanent License State: Active, Not in Use License Count: Non-Counted License Priority: Medium
WAAS license as it says that this is not in use, WAAS under the interface is not possible.
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Feb 23, 2011
I am trying to come up with a config for implementing QoS over a 512 kbps WAN link that will traverse voice and data traffic for now. I am using a Cisco 2901 router with 15.1(3)T IOS on it. my config is below
class-map match-any DATA-PRIORITY match protocol citrix match protocol sshclass-map match-any VOICE-CONTROL match protocol skinny match protocol mgcp match protocol h323class-map match-any VOICE match protocol rtp audio class-map match-any ANY match any [ code]...
THE ISSUE IS : when i add in the service-policy output WAN- QOS- POLICY command , i get the error " insufficient bandwidth 256kbps for bandwidth guarantee (180)". if i take out the " bandwidth 512 " command out then i get no issues adding the above command on interface g0/1
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Jun 9, 2013
I have a Cisco ASA and a 2901 Cisco Router connected via site-to-site VPN. The ASA can ping over the VPN to computers behind the router, but the router can not always ping to computers in the ASA network. When i ping from a computer in the IOS router's 10.100.36.0 network the requests times out most the time; although every few minutes, i will get about 10 pings back, then stops working again.
I uploaded their two configurations.
The ASAs public IP is 20.20.20.5 and local (inside) network of 10.101.36.0/24
The IOS routers public IP is 20.20.20.10
There are many internal networks, but 10.100.36.0/24 is the one with issues.
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Feb 7, 2012
How do I disable fragmentation on a 2901 router? I want it to simply drop packets oversized packets.In my lab, I am trying to test various MTU issues. I'm trying to use a 2901 router to simulate the WAN equipment that my WAN provider would deploy in production. In production i'm expecting the WAN to only support an MTU of 1320 with no fragmentation at all.
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Jan 1, 2012
Physical devices are a Cisco 2901 (CISCO2901/K9) with GE0/0 configured as 192.168.1.1
Connected through a D-Link DGS-1210-24 configured as 192.168.1.202
Running on a domain with an HP domain server as 192.168.1.2
The 2901 was an EHWIC (VA-DSL-A oPoTS) on EHWIC 0/0/0
GE 0/0 on the 2901 is physically connected to the DGS-1210 which is physically connected to the server.
VDSL 0/0/0 is physically connected to the DSL jack.
So far the configuration reports all is connected, and I can ping the gateway of our ISP (using CLI or Cisco CP); however the server reports no internet connection and no workstations can access the 'net.
Once connected; I'd also like to allow ports through for use on the network (25, 80, 110, 443, 987, 1723) - but not sure on how to do that just yet!
Our IP is 202.27.19x.19x
Our Gateway is 202.27.217.5
[Code] ......
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Jan 27, 2013
I have recently bought cisco 2901 in order to replace it with our 1811W that we have at the moment.When I try to set a failover / backup with rtr; it seems like the function is not valid.Once I select rtr and set the object #, the reachability command is not available.Does that mean this function is not a part from the license package I have?
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Oct 4, 2011
I have inherited a setup for a custom application and would like to know if this is the only way this could be set up. How would you do it?The application uses dedicated T1 links to our vendors. There is a Cisco 2901 router in the middle providing the connections. Traffic to specific vendor's IP's are routed to their prospective connections. I have attached a network diagram and a config for the 2901. The way my predecessor(s) set this up, each different vendor uses a different private IP address for the internal links. This seems odd to me. Shouldn't there be a way to have only one subnet on the inside and have the links NAT depending on which route it takes? The servers have persistent routes built in them to send vendor traffic to the associated IP on the router. E.g., traffic to Vendor 1 is routed to 192.168.50.1, the 2901's IP address for the Vendor 1 network. That traffic is then NAT'd to an IP address associated with Vendor 1's link and the 2901 then routes the traffic to the Vendor's end of the link.
I would think that I should be able to revamp this so that internally we're only using one subnet and the traffic could NAT at the link associated with the Vendor. I recently had to add the 3rd vendor connection, and wound up having to duplicate what was done for the other two in order to get it working quickly. I didn't have the time to wrap my head around the best way to revamp the whole thing.
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Jul 6, 2012
I recently obtained a 2901 router running 15.2(2)T to replace my old 877 which was running 15.1(4)M1. The 2901 is humming along quite nicely but I have had difficulty configuring one feature which was working fine on the 877. The router needs to be a PPTP client to a hosted VPN service. On the 877, I had it configured like this: [code] I then had a dialer interface to actually set up the connection, and some PBR to control what went over the VPN. All well and good, and it worked fine. But on the 2901, when I try to configure the same thing, there is no such command as "protocol pptp" -- the only option is protocol l2tp.Was PPTP support deprecated somwhere between 15.1 and 15.2, or does the 2901 itself not support it for some reason? Obviously I understand that l2tp is superior to pptp, but at the moment this is my only option.
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Mar 17, 2011
I have one router 1841 in which i configured PBR for internet traffic from LAN. I hv two ISPs few server are configured for ISP1 and few for ISP2.I planned to shift my existing setup at 2901 G2 router. when I am configuring the same config on this router so traffic is passing through only from one ISP not from other, if I troubleshoot so I see that the interface which is connected with ISP2 is not getting any input/output packet.
Config is here:
==========
interface FastEthernet0/0
description ****** ISP2 ******
ip address 203.xx.xx.110 255.255.255.248
[Code].......
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Jun 2, 2012
Why I cant correctly use ip sla command. I only have on my 2901 such commands: ip sla ?
key-chain Use MD5 Authentication for IP SLAs Control Messages
responder Enable IP SLAs Responder
server IPPM server configuration
There is my "sh ver"
ROM: System Bootstrap, Version 15.0(1r)M15, RELEASE SOFTWARE (fc1)
And...What should i do. if i want to create a failover with to WANs
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Jul 2, 2012
Where's the ideal place to put the KS? My current setup is 1 KS, 19 GM. The KS sits BEHIND a GM, so all other GMs have to come through one GM to get to KS.Now, I have purchased two dedicated KS routers. I configured one today, and placed it right on my WAN. My WAN is a L2 Ethernet domain, so i just provisioned a switch port in the WAN vlan, and away we go. I copied RSA keys over from the current KS, configured redundancy and the two hooked up, saw each other and it seems to be good to go. For the ACL, I put in an exclustion for my two KS to talk to each other:
deny ip host 192.168.250.40 host 192.168.250.41 (Old IP, New IP)
deny ip host 192.168.250.41 host 192.168.250.40.
I used a test router and pointed it to the new KS, it registered without a hitch... HOWEVER about two hours later (my 7200 second timeout) I lost ALL my branches. My 18 other GM were still pointed to the OLD IP only, they didnt have the second IP configured yet. In a hurry, I quickly disabled the redundancy configuration on the old KS and had to go to each GM and do a 'clear crypto gdoi' on each one to get them to re-register. There were no log messages about not being able to rekey, no log messages about dropped peerings, nothing. Once I did that, everything returned to normal.
The Question I have...
Would having configured the redundant KS caused this problem? Would having one KS behind a GM and the other Coop KS in the WAN make a difference?
Relevant config from existing KS, 2801:
crypto gdoi group GETVPN_GROUP
identity number 1234
server local
rekey retransmit 60 number 2
rekey authentication mypubkey rsa GETVPN_KEYS
[Code]...
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Apr 18, 2011
I have a 2901 ISR G2 router, with IOS 15.0.1M3 , this router is not working with static NATing, I have tried to configure this router with one internet link and make few static translations with it. But this configuration is perfectly working with 1841 ISR router.
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Jun 9, 2013
We've have a client who had a ordered 2 units of 2901 router to have site to site connectivity. User has bought a leased line of 256kbps from service provider in between two sites, but the issue is the service provider has layed a rj11 cable and there is no rj11 interface on 2901 router it only has two rj45.
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Aug 7, 2012
Need to know if I have 2 type of license on my 2901 router: ipbase and uc, will the 2 type of fuctions of this license work at the same time. Another words will i have route and nat functions work with voip having to type of license on my 2901?
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