Cisco :: Get ASA To Advertise EZVPN Connected Networks Via OSPF
Feb 16, 2011
I'm trying to advertise the branch LAN subnets via OSPF back to our core.I can create the OSPF adjacency and the ASA is learning routes fine. However it does not appear to be pushing the branch LAN subnets to the connected router. show ospf database reveals they're not in the OSPF database.Here is my routing config, the branches are 10.114.0.0 /16.As an aside, why I need the statics below, they appear to be necessary to reach my LAN subnets behind the EZVPN spoke sites. I would have thought the ASA would learn it automatically as I'm running network-extension mode on the spokes. [code]
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Jan 9, 2012
I am facing two issues in BGP both the topology and Config files.Because the link between Vail and Telluride runs iBGP, both routers will learn about the networks in AS 300 and AS 400 through native BGP only and both AS's do reach each other. Both routers are also running OSPF with Aspen and BGP routes are redistributed into OSPF domain. Now, Aspen knows about the networks in AS 300 and AS 400. Now suppose the link between Vail and Telluride fails, both AS 300 and AS 400 can't reach each other anymore. The only solution to this is to redistribute OSPF routes to BGP on Vail and Telluride. But when i did this, only routes with "O" learned by Tahoe and Alta. In other words, Tahoe sees only 192.168.1.220, 192.168.1.196 and Alta sees only the same routes. Why the redistribution from OSPF to BGP didn't advertise the O E2 routes?
This actually was discussed before but i still can't get it. It is not an actual issue.It is about "Syncronization". I know that we've said many times to turn on Sync. when we do redistribution from BGP to an IGP to make sure that the routes are installed correctly in the IGP routing table. However, as you notice in the configuration, i didn't enable Sync. on Vail and Telluride for a long time and redistribution still works fine.
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May 20, 2012
We r using BGP on our MPLS rtr..now we have added new network on the existing BGP setup.....but unable to show the same under BGP table.
router bgp xxxxx
bgp log-neighbor-changes
neighbor 10.X.X.185 remote-as XX55
!
address-family ipv4
neighbor 10.X.X.185 activate
no auto-summary
no synchronization
network 10.X.62.0 mask 255.255.255.0 -----> This network we have added
exit-address-family
But not able to get the same using the command sh ip route | i 10.X.62 but we are able to get the entry for 10.X.51 which has been already added.
sh ip route | i 10.X.51
B 10.X.51.0/24 [20/0] via 10.X.X.185, 1w6d
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Jul 1, 2012
I have a simple isp topology built in GNS3, for testing (pppoe) dialers:cisco router(R1) connected to my pc network card, doing NAT translations for all the devices in the topology.I know how to configure NAT for spesific ip range, but i can't find out how to configure NAT for networks which are learned through ospf (or any other dynamic way).
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Sep 22, 2011
I have 2 ASBR routers, AGFR01RTR03 and AGFR02RTR03, performing OSPF to OSPF redistribution in both ways for the same ***. They also do summarization for our private addressing scheme. It is all working just fine for that part (neighbors, summarization, redistribution).
AGDC01RTR01 --- AGDC02RTR01 (OSPF 1000 ABRs)
| |
| |
AGFR01RTR03 --- AGFR02RTR03 (OSPF 1000 / 53 ASBRs)
Let's focus on AGDC01RTR01 with a specific entry here (IP subnet is fake) :
Routing entry for 1.1.1.0/25
Known via "ospf 1000", distance 110, metric 300, type inter area
Last update from 10.2.244.76 on GigabitEthernet5/1, 1d03h ago
Routing Descriptor Blocks:
* 10.2.244.76, from 10.2.1.249, 1d03h ago, via GigabitEthernet5/1
Route metric is 300, traffic share count is 1
[code]...
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Mar 14, 2011
Currently the OSPF network consist of 2 segment route via static route.One is AREA 0 and another AREA 10.Both network are seperate entity, only static route to route between 2 networks.But the static route do not provide the dynamically and flexibility, I plan to run routing between 2 networks via VLAN160 and VLAN162.
I still want to manitnace it was 2 different OSPFrouting domain.Can I run OSPF with differrent OSPF porcess ID?
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Nov 24, 2012
I've been trying to connect my printer to my wireless router/modem. The install program is giving me the following error {The PC and the printer are connected to different networks(192.168.15.0 and 192.168.0.0). They must be connected to the same network. This can happen when you use the manufacturer's default network name (SSID) and another nearby network is using the same name.} I just had the computer built and have been setting it up. How do I know which is the right IP address?
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Jan 17, 2012
I cant not get to connected to any wireless networks, it keeps saying unable to connect
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Feb 29, 2012
Why isn't it possible to make following configuration:
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Sep 24, 2012
I've got two Nexus 7010's running HSRP north bound to a pair of ASA's, and BGP south bound to four 6509's. Is it possible to advertise default route to BGP neighbor (or prefer it via MED), only if the node is HSRP-active?
Essentially the goal is to create symmetry for inbound/outbound traffic. Only way I can think of so far is via an EEM script, so that when it sees HSRP go active via syslog, it would kick off an action to remove ASN prepend, or reduce MED, and the opposite if HSRP goes standby.
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Feb 13, 2013
I have a 3560 with IP base that is acting as a true EIGRP stub router today. It advertises local routes to the upstream service provider router and receives a default route.
Now I want to connect a 3900 ISR as a voice gateway. The 3560 does not seem to be advertising any routes to the 3900. Ok the EIGRP stub doc says this:
Only specified routes are propagated from the remote (stub) router. The router responds to queries for summaries, connected routes, redistributed static routes, external routes, and internal routes with the message "inaccessible." A router that is configured as a stub will send a special peer information packet to all neighboring routers to report its status as a stub router.
# Any neighbor that receives a packet informing it of the stub status will not query the stub router for any routes, and a router that has a stub peer will not query that peer. The stub router will depend on the distribution router to send the proper updates to all peers.
I guess I don't understand why the stub advertises local routes to the upstream ISP router but does not seem to advertise routes to the 3900. Does the stub identify the ISP router as the distribution router somehow, thus differentiating it from the 3900? If so, how is this done?
show ip eigrp neighbor detail on the 3900:
EIGRP-IPv4 Neighbors for AS(100)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
[Code].....
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Mar 20, 2012
We have an inside interface, 192.168.10.0/23We have an outside interface, public ip...We have the ASA connected to 5 site to sites, this is working fine and through the internal interface can access all remote sites and vice vera. These are 192.168.20.0/24, 192.168.30.0/24, 192.168.40.0/24, 192.168.50.0/24 and 192.168.60.0/24,When a user connects via Cisco VPN Client they can see the inside network but can't talk to the remote networks connected, for instance 192.168.40.0/24... whereas an internal user can. I understand that the VPN client connection is seen as an outside connection, not an inside connection... but then I read [URL] and I am confused even more.
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Feb 7, 2011
I have a big issue in providing internet service to the networks that are connected to a router. Also i do wanna know whether ipv6 can be used in 2811 routers.
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Oct 23, 2012
I have five (5) sites all connected via static VPN tunnels. They are all using Cisco ASA 5510s running 8.4(4)1. Any internal IP on each site can ping any IP on a remote site, because of the static VPN tunnels. I have the external IP (routeable) addresses connecting to each other.
Site A: 10.1.0.0 /24
Site B: 10.2.0.0 /24
Site C: 10.3.0.0 /24
Site D: 10.5.0.0 /24
Site E: 10.10.0.0 /20
I have remote users who connect using Cisco AnyConnect 3.1 to Site E. They get a static IP within the 10.10.100.0 /24 subnet (vpnpool00) and can access anything in the 10.10.0.0 /20 subnet. So far, so good.No management wants users to access devices within the other sites, specifically Site A using teh same AnyConnect connection. In other words, they get an Ip address of say, 10.10.100.5 and now need to access a server on Site A's subnet or 10.1.0.5.I have checked my NAT statements and they appear to allow this, but so far when I do a ping I get the following: Routing failed to locate next hop for ICMP from outside: 10.10.100.5/1 to inside: 10.1.0.5/0 What am I missing? Is there a NAT statement that is wrong, or an access-list statement or possibly a static route?
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Nov 24, 2011
I have a sonicwall firewall connected to the LAN port of the RV016 router and two DSL modems connected to the WAN ports.
Ip address allocation:
Firewall
192.168.50.9
RV016
LAN - 192.168.50.10
WAN - 192.168.60.1
WAN - 192.168.61.1
What configurations do I need to enter into the RV016 to allow other networks connected to the firewall(192.168.3.0, 192.168.2.0) to access the internet?
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May 15, 2011
I am running IPv4 with OSPFv2 currently. However, I planed to deploy IPv6 in my network. Is it possible to deploy V6 with OSPFv3 without affecting current network traffic in V4?
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Jul 24, 2012
I try to set up EZVPN server. I cannot get any response from server.
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Aug 23, 2011
I'm trying to configure a router 7606S with SPA-IPSEC-2G for EzVPN.I was reading some examples in SPa and 7606 documentation but with the current configuration in our router I don't know how to do it.
The router has the SPA installed in slot 3, interfaces G3/0/0 and G3/0/1. The router has the interface G2/0/0 connected to our provider, and we have the interfaces connected directly to network; ie: not vlans, no trunks, ports configured as IP ports conected directly to network.Where can I find an EzVPN example configuration ?
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Nov 1, 2012
I'm having trouble configuring with EZVPN on ASA5510. EZVPN uses the local LAN as the source IP, now since the EZVPN is configured on the ASA, it will use its local port 2.2.2.1 as the source local LAN. The actual local network is behind a firewall and i need the tunnel to extend to the 10.10.10.10 network. Is there a way to extend the tunnel to use the 10.10.10.10 as the source LAN? How to do it via the GUI?
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Nov 24, 2011
Cisco ASA 5505 50-User Bundle includes 8-port Fast Ethernet switch, 10 IPsec VPN peers, 2 Premium VPN peers, 3DES/AES license
ASA5505-50-BUN-K9. Cisco ASA 5505 Unlimited-User Bundle includes 8-port Fast Ethernet switch, 10 IPsec VPN peers, 2 Premium VPN peers, 3DES/AES license ASA5505-UL-BUN-K9
I think they will support ezvpn, just need confirm .
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Mar 31, 2011
I am having an issue get an EZVPN working between a 2811 server and a SR520 client. The symptoms are the SR520 makes multiple connection attempts to the 2811. It appears that sometimes these connections are successful and the SR520 is assigned an IP address but then the tunnel will be dropped and a new session will be started. I've attached scrubed configs for both the 2811 and the SR520. One other note, when connecting to the 2811 with a software VPN client, there are no problems, so I think the problem is with the SR520. On the other hand, the SR520 wasn't having any problems until we switched our VPN server from a UC520 to the 2811.
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Jul 10, 2011
I have a 3825 configured as an EZVPN server with 881 routers as clients. One issue I am seeing is that sessions don't seem to time out, such as when a peer's public IP changes. Show crypto ISAKMP peer shows the same host (using device certificates for authentication) with multiple public IPs establishing sessions. I have ISAKMP keepalives configured on the router.
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Mar 29, 2011
Our company has a handful of sites that use the EasyVPN technology.On my remote router (Cisco1841) - I add the crypto inside to the FA0/0 and the Loopback0 interface.On the other end my Cisco ASA 5580 - 8.41 code - I have RRI enabled and the tunnel comes up fine.However I only see the static route from the fa0/0 interface on the remote router. I can not figure why I can not see the Loopback0 address?Wondering if this is a limitation or feature not enabled.
I added multiple interfaces on the Cisco 1800 and can see the networks.I run "show crypto ipsec sa" on the Cisco ASA and see the spi encaps/decaps for the loopback, but the SH ROUTE does not show the static route being injected.
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Jan 14, 2013
I have lots of 857's routers in the field with mostly the latest OS - 12.4(15)T17 making ezVPN connections to a 2951 with 15.1(4)M5.All the 857's have lookback and vlan interfaces similar to :
interface Loopback0
ip address 50.43.8.1 255.255.255.255
ip tcp adjust-mss 1452
end
[code]....
Now lately for some or other reason we have instances where I can ping either the VLAN or the LOOPBACK interface, but not both. Or I have instances where the 2951 can ping all the interfaces on the 857, but the 857 can not ping the 2951. Or I have instances where the 2951 can not ping the 857, but the 857 can ping the 2951.The way I have been fixing this is either to add crypto ipsec client ezvpn SMS_VPN inside to the loopback interface, or if it is there already to remove it. This usually works for a few days, but then suddenly I have to reverse this again. If that does not work then I usually do lots of clear crypt sess and/or clear crypt ipsec client ezvpn on the 857, or clear crypt sess remote 857_ip_address from the 2951 and then suddenly it starts working again.
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Mar 14, 2012
We have a VPN using 857 and 877 routers as remote connecting in to a 2800 EZVPN Server.
The VPN is working fine. However, the VPN connections sometimes (after a few hours/days) seem to "freeze". A "show crypt sess" shows the connections as Up/Active, but you can not ping antyhing from remote to server, or visa versa, nor does any traffic flow. I then added a "isakmp keep-alive" on the 2800, which improved the situation a bit, but not as much as I hoped.
On the 877 I then implemented a IP SLA, with Object Tracking and then use a Event Manager to just issue a "clear crypto session" . This solved the problem.
However, what do I do on the 857 ? It does not support Object Tracking or the Event Manager. Is there any other mechanism to monitor and reset these frozen/stale VPN connections automatically ?
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Feb 2, 2012
I try to configure a simple EzVPN infrastructure:
EzVPN Server (CISCO2811, hostname cme) < -- > EzVPN Remote (ASA5505, hostname ezvpn-asa) < -- > Client
Attached you find both configuration of the EzVPN server and remote. The tunnel is getting up and if I ping from the ASA to the Router, I see the packets getting encrypted:
ezvpn-asa# ping 172.16.100.1
...
ezvpn-asa# show crypto ipsec sa
interface: outside
Crypto map tag: _vpnc_cm, seq num: 10, local addr: 172.16.100.2
[code]....
If I connect a client with IP address 192.168.1.2 to the interface eth0/1 and do a ping to the cme, I don't see any packets getting encrypted. I don't have any idea about VPN, I just need it for a wireless lab environment. What do I have to configure on the ASA, so the inside traffic is encrypted?
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Apr 2, 2013
configured 2 EzVPN groups using a 2811 router, i am trying to do this but is not working i have another VPN working thru EzVPN but if i try to configure another group for another EzVPN client is not working and the problem is that the debug crypto isakmp say that Apr 3 08:45:25.802: ISAKMP:(1309): phase 2 SA policy not acceptable!
How is that possible? in my understand the EzVPN server will inject the the IKE (phase 1) and IPSec (Phase 2) parameters for the client and that's they dont need to negotiate nothing, is important to say that the EzVPN client is an ASA5505 with onlu DES encryption enabled, 3DES and AES are not available due to licensing reasons.
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Mar 18, 2011
configured Ezvpn Server/client with client mode configuration on IOS router with ver advipservicesk9-mz.124-15.T3.bin of ISR 1841 routers. Only my main issue is that once the tunnel is up I cant access the server side local LAN. However I could each site my icmp traffic is encrypt or decrypt but not both at the same time. However I can ping from the server to the client ip address which is assigned by the pool (int loopback10000)
Also once the tunnel is up I could also see there's static route towards the client side via virtual-access interface and also static route on client side. I have already configure SPLIT ACL on server side allowing the required network access.Attached is the configuration of both server and client with all required show output.
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Sep 24, 2012
I've got some ASA5505 which run as EzVPN clients in NEM, connecting to a ASA5510 as head-end. The ASAs are configured with a CSM and AUS. But whenever they are getting a new configuration through the AUS they stop trying to establish an EzVPN connection to the head-end. After a "reload" they run with the new configuration and establish the tunnel as expected.
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Aug 9, 2011
I am attempting to get a solid setup for a remote office we have going up and I am running into little issues that I cant seem to get around.
Basically, we have a remote office that will have dual ISPs, one hard wired circuit from a local carrier and the other will be a Verizon 4G router that plugs in via Ethernet and hands out DHCP to my Cisco router.The Cisco router is a 2911 with IP SLA configured. I have it setup to ping my DC out one interface and if that fails, it removes the default route and injects a new default route from the other ISP,
The problem I am having is with the VPN. I figured using EZVPN would be the only solution because the Verizon 4G only supports DHCP so I have to be able to connect from a dynamic remote host. The other caveat is that failover needs to be seamless as we have no person onsite that can troubleshoot. Its fine if it takes a few minutes, but the VPN just needs to come back up on its own without any intervention.
I attempted to setup two different EZVPN crypto maps on the router but realized you can only have one inside cryptomap per interface, which would cause a problem with the internal network. I thought I could just create subinterfaces off the router to have two inside interfaces to work with but that wouldnt have supported because they would now be on different subnets.
I decided that adding an ASA5505 behind the router may be the simplest solution. Use the router only for the purpose of handling routing between the two ISPs and performing NAT out the interfaces. Then use the ASA to do EZVPN from. This works well but there are some issues I am trying to work through.
First, when the ISP fails over to the backup, the NAT translations have to timeout before things start working again. For a constant ping, this is fine, I have the timers set down to 15 seconds for NAT timeouts and after 15 seconds the ping picks right back up again. However, this breaks the EZVPN. The ASA keeps trying to bring up the ISAKMP nearly every second, which keeps resetting the countdown on the NAT timeout for the remote EZVPN server. Because of this, the VPN will never come up until I manually clear the NAT translations on the router. So my first question is this; is there a way to adjust the timer that the VPN uses to try to bring the tunnel up? I tried the crypto isakmp keepalive command but that didnt work, it looks like it doesnt work with EZVPN.
The second issue is really with the IP SLA and is only an issue because of the first issue I mentioned. When the router first comes up after a reboot, both the primary and secondary interfaces come up. However, since the primary default route is only injected into the routing table once IP SLA is up and can reach its destination, the secondary route gets injected initially and the VPN comes up over the secondary ISP. In a few seconds, the primary default route is injected, changes the path and because of the NAT translation, breaks the tunnel and never comes up again because of the first issue with the VPN tunnel renewing the NAT translation continuously.
I could easily go out and purchase a $100 Linksys router that will do the failover and clear its NATs and everything, but I need better reliability out of the hardware than that. There has got to be a way to do this on a Cisco device since consumer level equipment can.
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Jan 20, 2012
I have setup DMVPN and EAZYVPN on one router. Tunnel interface on Spoke one and Spoke two are up/up and show crypto ISakmp sa shows both tunnels are in idle. However, tunnel to Spoke one(10.10.1.1) keep bouncing on and off(see below). Every 30 sec or so, the tunnel gone back to IKE phase while tunnel for spoke two(5.5.5.1) still leave active. THe configuration on the HUB side is the same for both spoke!! show crypto ipsec sec shows both side has the same life time(IOS default). Could that be an IOS debug on the spoke one?
Hub :
Cisco IOS Software, 2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 15.1(3)T2, RELEASE SOFTWARE (fc1)
HUB#sh crypto ipsec security-association
Security association lifetime: 4608000 kilobytes/3600 seconds
Spoke one:
Cisco IOS Software, C2600 Software (C2600-ADVSECURITYK9-M), Version 12.4(8), RELEASE SOFTWARE (fc1)
[code]....
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Jun 27, 2012
I have ezVPN configured on an ASA 5520 for my server with 5505s as my clients at several remote sites. The tunnels come up no problem and I can hit everything I need to on both sides of the tunnel, but I'm not able to get to another remote network from a remote network. The traffic goes out the tunnel on the 5505 but on the 5520 all I see is a bunch of scrolling tear down messages.
[code]....
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Nov 17, 2008
I have problem auto connect Easy VPN client to Easy VPN server using saved X auth username/password. The ez vpn client is a Cisco 2691 using IOS 12.4.15T7. The config is as follows:
crypto ipsec client ezvpn EZ
connect auto
[code]....
the router keeps prompting me to manually enter username/password. connectivity will work be established after i manually enter the username/password. But this is not what i desired. I need it to connect automatically.
The Ez vpn server is a 7200 running 12.4.22T. Config as follows:
aaa new-model
aaa authentication login USERAUTHEN local
aaa authorization network GROUPAUTHOR local
[code].....
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