Cisco :: LAN To LAN Tunnel Routing
Sep 5, 2012
I have a problem with ip-sec lan to lan tunnel
Location A ASA5505 192.168.100.0/24
Location B ASA5510 192.168.58.0/24
I created a ipsec site to site vpn Also create the nat exempt rule Now i have also a second interface on Location B with subnet 192.168.100.0/24 Now can i access from location a the devices on location b But when i wil connect from location b to location a i get no connection i think that the asa the traffic not send over the ipsec tunnel but it keeps in the asa?
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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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May 20, 2013
I have an ASA5510 configuration that I'd like to add to.In this configuration there is a site to site IPSEC VPN tunnel to a remote location.It is tunneling a particular subnet for me and everything is working.In the remote subnet, there is an ASA 5525-x connected on the outside interface. Let's say for argument's sake, the outside IP is 210.0.0.1.On the Inside interface, i've configured 10.240.32.0/24 network.The only static route I have configured on the 5510 is the default gateway that goes to the ISP.I assumed that I have to add: route Outside 10.240.32.0 255.255.255.0 210.0.0.1 1.I did this, but i'm not able to reach the destination 10.240.32.0/24 network. I can't see anything hitting the 5525-x and the only thing I see on the 5510 is the building outbound ICMP and the teardown for the ICMP.
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Oct 9, 2012
I was recently tasked with adding a redundant internet connection for one of our remote sites. this new connection was to be used as the primary connection for the VPN from the site with the existing one being configured as a failover controlled by an IP SLA tracker on the new interface.
The existing connection uses a PPPoE connection configured under Dialer1 associated with FE0 to connect to our ASA. Duplicating this wasn't an option given the hardware that the second ISP provided. They provided a /29 for use; I configured FE2 using a Vlan interface with a host on that subnet.
I duplicated the connection profiles and tunnel groups on our ASA, changing only the Peer IP. Both interfaces on the 1811 are using the same crypto map.
The new connection seems fine and I can reach other hosts on its subnet from both the router and hosts on the inside of the NAT.
The issue happens when I change the default route to use the new connection.
I'm able to reach internet hosts using the new connection and I can see the VPN being established on the ASA while the VPN from the old connection drops, but I can't get traffic to route over the tunnel.
If I remove the default route that uses the new connection the VPN comes back up on the old connection just fine. There's no problem routing over the VPN when it uses that connection, just the new one.
Relevant config from show run:
!
crypto isakmp policy 10
encr aes 256
[Code].....
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Nov 22, 2011
I am looking for alternatives to GRE since it isnt officially supported on 3750's. I am dealing with a Managed MPLS situation where the carrier manages the routers at each site and I only have read-only access.
The carrier is resistant to making any changes to the router since it would be a one-off or deviation from their standard config. What I am trying to do is to force all site traffic for our department coming from different locations to be forced all the way back to corporate and not "see" any of the other departments. I am not concerned about encrypting the traffic but finding a way to route the traffic back to corporate since I am pretty much not able to make any router changes.
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Feb 16, 2012
I have a Cisco 2911 that I am configuring for a remote site. I have configured a IPSec Tunnel from our main site ( ASA 5510 ). The Tunnel is up and I can connect from the main site LAN to the address of the 2911 through the IPSec Tunnel. The 2911 is equipped with a 16port switch service module. The switch is configured with an address and I can open a telnet session to the switch. From that session, I am able to reach hosts on the LAN across the IPSec tunnel. However, when I open a telnet session to the 2911 router, I cannot reach hosts on the main site LAN from that address. When I do, the traffic is sent outside of the tunnel instead of inside it. It works from the service module as traffic between the interfaces have the ACL for insteresting traffic applied, but traffic generated from the address of the 2911 router does not seem to get picked up by the ACL on the IPSec tunnel and it is getting the default route applied and going directly to the outside interface instead of to the tunnel. how to make this work?
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Dec 4, 2012
I have configured a site to site VPN tunnel using my Cisco ISR 891 router. The tunnel connects between my network 10.88.10.0 to the remote network 10.210.65.0. When I ping the remote nnetwork my VPN tunnel comes up and all is well.
I have recently connected a second network to my 10.88.... network. The new local network is 192.168.0.0. I have now managed to get the two local networks pinging each other. I can also carry out RDP sessions between systems on both networks. Hence I am happy that both networks are communicating.
I used the Fastethernet Port 8 on my ISR 891 to physically connect to the new 192.168 network and then entered the appropraite 'Static Routes' on the 192.168 exisiting router(Netgear Router). Hence certain traffic arriving at the netgear will now be forwarded to Port FE8 on the cisco ISR 891.. See FE8 Port config at the bottom of this post. I have used tracert to ensure that the traffic does arrive at Port FE8,(192.168.0.235).
I cannot seem to ping any device on the remote 10.210.65.0 network from the 192.168 network. However, as stated above I can sucessfully ping the same remote device from the local 10.88 network. I must be missing something that allows the 192.168 traffic to use the existing VPN tunnel. I have added the following command to the IpSec rules for the VPN tunnel using the Cisco Configuration Professionla tool.
Permit 192.168.0.0/0.0.0.255 10.210.0.0/0.0.255.255 ip
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Mar 14, 2013
i'm desperately trying to get LACP working over a dot1q Tunnel. The "Service Provider" Switches are two 4506-E Switches with SUP7-E connected via a 10G Link, running on cat4500e-universalk9.SPA.03.03.00.SG.151-1.SG
sample config:
dot1q tag vlan native
interface GigabitEthernet3/1
switchport access vlan 2001
[Code].....
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Apr 3, 2012
I am using a RV110W as a VPN client to establish a VPN conection since some months. So far everything works fine. But all traffic is routet thru the VPN tunnel. Now I try only to route specific adresses thru the tunnel but not the internet acess.
RV110W is in Gateway mode
WAN interface is connected with internet
I am using PPTP with PAP and MPPE for VPN
so far no static routes (I could not set e.g. a route to 0.0.0.0 because web-interface says its not a valid adress)
Goal is to route only traffic for the target network thru tunnel and the rest direct via WAN interface.
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Dec 11, 2011
My main issue was trying to connect virtuelly via GNS3 and my router setup on it. I have three Cisco 2621 XM routers set up. They all came with 2 Fast Ethernet ports. However, only one of them has a Serial port. So, what I'm doing is connecting the routers together with the fast ethernet ports using crossover cables. So, I baselined two routers to start with. Very simple AAA, set up IP HTTP server, IP HTTP Secure Server, etc. Privledge lvl 15 access, etc.
I then set my Router A's inside Fa0/1 port with a 192.168.1.0/24 network. The outside port Fa0/0 is 10.0.0.0/30 network.Router B is set up similar, 192. 168. 2. 0/24 insice Fa0/1, Fa0/0 is 10.0.0.0/30 network outside. So, three networks 192.168.1.0, 192.168.2.0, 10.0.0.0 network. [code] I then repeated the same on Router B, just transposing 2.0 network for interesting traffic, and Peer 10.0.0.2 for the Fa0/0 interface on Router A.When I "test" the tunnel, I get an error message. So, since I'm connected to Router B (which was working, had routing, and had Router A's network 1.0 in it's routing table), the error msg says that I need to add a route into the routing table (192.168.1.0). It was there up until I attempted to put the VPN in place. It's like it stopped the routing.
At face value, it looks like this should be working! But when I debug the ospf process, it looks like hello packets aren't tranversing across to the other side. Is it because I just have the 192.xxx.xxx.xxx networks as "interesting" traffic? Can I have multiple networks marked as "interesting"? I thought that's what the peer statements were doing to allow the tunnel to be established.
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Mar 7, 2013
I have an IPSec tunnel configured on my Cisco 1941. The other device is an ZyXEL router.I can see the tunnel is up but there is no traffic.This comes out the show crypto ipsec sa
interface: Dialer1
Crypto map tag: CMAP_AVW, local addr 10.10.10.89
protected vrf: (none)
local ident (addr/mask/prot/port): (192.168.200.0/255.255.255.0/0/0)
remote ident (addr/mask/prot/port): (192.168.150.0/255.255.255.0/0/0)
current_peer 20.20.20.161 port 500
[code]....
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May 22, 2013
We have a site were we have a 887 cisco hsiung a GRE tunnel
When pinging anything froom the tunnel source to the tunnel dest on the local lan we get a 50% packet loss
ping
Protocol [ip]:
Target IP address: 10.9.93.22
[Code].....
replicated the setup exatly in our lab and it works 100% with exactly the same config.
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Nov 17, 2012
I have seen an error in GRE configured between two routers over WAN. i am monitoring the WAN link and GRe tunnel via WhatsupGold NMS and it reported that Gre tunnel having packet loss sometimes and this time it affects the services and traffic passing over tunnel.sh int t101 shows output drops . is that the problem ? i have read that i have to adjust MTC size but i tried to change the tunnel MTU to 1400 but still sh int t101 shows MTU as 1514 ? What could be the problem of output drops in my tunnel link. [code]
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Feb 12, 2012
I'm trying to configure an IPSEC VPN + tunnel for multicast data. When the default gateway is set on the router (1841) it works fine but if I only set a route to the IPSEC peer via our gateway then the tunnel fails to come up. The end point is to a 3rd party. [code]
I found that if I add a static route for the tunnel destination via fa0/0, the public facing interface, the tunnel comes up..ip route 10.23.4.2 255. 255. 255. 255 FastEthernet0/0
and I can then ping the tunnel IP at the far end - 10.23.0.5.Why would that be? Is there a better way to do this without using a default route??
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Nov 20, 2011
In fact i receive traffic on a one client per vlan basis (traffic is PPPoE), i receive all this traffic on a router, collecting all these vlan on a bridge where the pppoe packets are treated.When I use a transeiver to convert operator fiber arrival to my router copper media interface, i have no problem....
When I use dot1q-tunnel to make the same on my 3750, packets seems to be corrupted.I get PPPoE timeouts and packet loss, not regulary, totally stochastic...
I made dozen of tests and different settings, without success I first thougt of MTU issues. [code] I made tests with system MTU and/or system jumbo MTU above 1500, without success.I didn't found any known caveats on 3750 running Version 12.2(25r)SEE4 related to dot1q-tunnel.
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Oct 27, 2012
i have 2 RV048 and one RV016
I have established VPN gateway to gateway tunnels; all routers use functional DYNDNS
IPrange site 1 192.168.123.1-254 external adres x.y.z.w
IPrange site 2 192.168.124.1-254 external adres a.b.c.d
IPrange site 3 192.168.122.1-254 external adres e.f.g.h.i
site 1 with 192.168.123.x has two win 2008R2DC servers, running AD, DNS, DHCP, RRAS with address 192.168.123.4-5
i can ping the routers only if i add the route to it but cannot ping further (route add command)
if i dont establish the route then nothing pings
How can i use the tunnel to connect to the servers in site 1
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Oct 26, 2011
what license do I need to create a IPSEC tunnel? I have an ASR 1001, running? [code]
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Mar 14, 2013
i've configured Cisco VPN CLient on a router 2821, and it is working fine.I could access inside resourses normally>the problem is that when i connect with VPN i lost connectivity to internet? What is wrong with my configuration? Below the running config of the router.
CISCO2821#sh run
Building configuration...
Current configuration : 5834 bytes
!
version 12.4
[Code].....
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Sep 1, 2012
I setup a GRE tunnel between two cisco 1800 & 1900 routers. I can't received multicast.
Here is a copy of my configs:
R3#Building configuration...
Current configuration : 1238 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R3!boot-start-markerboot-end-marker!logging message-counter syslog!no aaa new-modeldot11 syslogip source-route!ip cefip multicast-routing no ipv6 cef!multilink bundle-name authenticated!archivelog config hidekeys! interface Loopback0ip address 10.0.0.3 255.255.255.255!interface Tunnel0ip address 192.168.24.2 255.255.255.252ip pim sparse-modetunnel source Loopback0tunnel destination 10.0.0.1!interface FastEthernet0/0ip address 10.0.3.1 255.255.255.0ip pim sparse-modeduplex autospeed auto!interface FastEthernet0/1ip address 192.168.23.2 255.255.255.252ip pim sparse-modeduplex autospeed auto!interface Serial0/0/0no ip addressshutdownno fair-queueclock rate 2000000! router eigrp 1network 10.0.0.3 0.0.0.0network 10.0.3.1 0.0.0.0network 192.168.23.2 0.0.0.0no auto-summary!ip forward-protocol ndno ip http serverno ip http secure-server!control-plane!line con 0line aux 0line vty 0 4exec-timeout 5 0privilege level 15no login!scheduler allocate 20000 1000end
[code]....
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Jun 10, 2013
(Setup routing and iptables for new VPN connection to redirect **only** ports 80 and 443) Only my goal is a bit different. I am running a headless gui-less install of Ubuntu Server 12.04 that is being used for a variety of different purposes... I would like all traffic to travel un-prohibited through my ISP except for my transmission traffic. I have a VPN i subscribe to that allows me access for which I only want to direct a single port's traffic to. I am currently using a modified version of the code from the above link. My current code is below:
#!/bin/sh
sleep 200
DEV1=eth0
[Code].....
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Jun 13, 2011
I am trying to setup a L2tpv3 VLAN-to-VLAN tunnel.My setup has two Cisco 890 router with Cisco IOS Software version 15.0(1) M4. These routers are connected directly on FastEthernet port 8.
One linux machine is connected on FastEthernet port 0 on each router. The two linux machines are on same vlan. I am trying to establish a vlan-to-vlan tunnel between the routers and send traffic between the linux machines.
I followed the case study 11.4 from [URL] and configured the l2tp-class and pseudowire-class. However, the vlan interface configuration is different on 890 router.
I configured a vlan interface as follows.
(config)#vlan 200
(config)# interface FastEthernet 0
#shutdown
#switchport access vlan 200
(config)# interface vlan 200
I don't see the 'xconnect' command in this context. What's wrong with my configuration?
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Dec 21, 2010
Is it possible to create a crypto IPSec VPN tunnel between A Cisco c831 and a Pix 501e using a back to back set-up with a cross-over cable?
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May 30, 2012
I have my Router, not asa, with IOS Easy VPN Server established. If I use split tunneling my clients can access the net all day long and access hosts and resources over the VPN on the other side of the network as if it were plugged into the lan. The hard part I cant figure out is how to force tunnel. I want all internet access to go through the router and not to split tunnel in addition I want to retain the ability to access local resources as if I were plugged into the LAN. I have security reasons for doing this and I am not worried about a little extra load on the router. Let me know where to start looking. I can provide configs if necessary. If I do be warned I am trying to learn what all this nifty Cisco Config Pro GUI can do so my config is gonna be full of all kind of stuff that is messy. I wont post unless asked.
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Jan 16, 2012
Have a lab in which I am trying to configure a VPN tunnel between an ASA5520 (running ASA ver 8.0(2)) and a router (3725 running C3725-ADVENTERPRISEK9-M) - see pic below for topology.
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Apr 11, 2011
is there a way in LMS 4.0 to generate a notification when a VPN tunnel drops on an ASA 5500?
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Mar 4, 2013
Can i use at one site ASA 5520 and another site Router to configure VTI tunnel with OSPF routing?
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Jan 20, 2013
I have a Cisco 819 router and it's the first time I've configured any Cisco product. Starting from scratch, I have managed to get 3G working and the VPN to connect but so far no packets can route down the VPN tunnel (the other side is openswan/shorewall on CentOS5).I've been pawing over lots of guides and forum discussions but seem to be a bit lost. I suspect I'm missing some access-list definitions but don't really know how to go about it. I want the network behind the Cisco 819 (10.x.x.0/20) to be able to access the internet through the interface Cellular 0 but also the VPN remote network (192.y.y.0/24)When I ping from the other (non-cisco) end I see on the Cisco 819.
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May 11, 2011
i got a person who connect with vpn on a adsl connection to the corporate network.this person is using cisco ip phone on his remote location and i did configure the ASA 5505 to priorize voice over data.i still get voice skips when the remote pc is uploading data to the corporate network...what i've done is :
1.with asdm i did create 2 priority queues one for inside (queue limit 2048 trans ring limit 512) and outside (queue limit 2048 trans limit 256)
2. with the service policy wizard i did create a global service policy (all interface) and a traffic class for dscp 46 ef and on qos tab i did check the "enable priority for this flow"...
3. When using the phone, i clearly see that packets are growing on the LLQ queue (show priority-queue statistics)
4. i still get voice skips when uploading data to the corporate network... upload bandwidth is about 800k for upload the pc and the phone is on the same subnet
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Mar 28, 2012
i have one interesting problem with local PBR on 2921 router. Here is the case,On HQ site there is 2921 router with two directly connected ISP, and there is Branch which is connected to only one ISP. The configuration should be to connect HQ router to Branch router with two VTI tunnels, so that each tunnel on HQ site should be terminated on different ISP, and EIGRP will be monitoring each VTI status.The problem is on HQ site, there is only one way to specify router with LOCAL PBR configuration, so router should send on ISP1 terminated tunnel traffic to ISP1, and on ISP2 interface terminated tunnel traffic to ISP2.
As I know this configuratino should work, but I could't make it work on c2900-universalk9-mz.SPA.151-4.M4.bin IOS, and on c2900-universalk9-mz.SPA.152-2.T1.bin.
Here is simple config:
ISP1 ip is 1.1.1.1
ISP2 ip is 2.2.2.2
3.3.3.3 is Branch ip address.
!
ip vrf BRANCH
[code]....
when I configure one default static route, it starts workig, but both tunnels go with specified ISP, and also there is no vrf problem,when there is no any vrf config it also don't work. gre tunnels also dont work.
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