EIN: 98-1615498 It is just another WAN connectivity option. Cisco ASA FirePOWER Services: Traffic redirection with MPF, Cisco ASA: how to enable ASDM access to ASA, Cisco FMC installing certificate for pxGRID, Cisco ISE Post installation tasks verification, Cisco ISE: 1. Type escape sequence to abort. crypto isakmp key isakmp1234 address 0.0.0.0 0.0.0.0 - > accept connection from any source to accommodate also dynamic spokes Type escape sequence to abort. The hub router requires a static IP configured on the WAN interface facing the internet. tunnel protection ipsec profile protect-gre EIGRP asks DUAL to make routing decisions, but the results are stored in the IP routing table. Phone: +1 302 691 94 10, GRANDMETRIC Sp. 1 10.10.10.5 172.16.1.2 UP 00:15:44 D 10.10.10.1 10.10.10.9 QM_IDLE 1001 ACTIVE, R1#ping 192.168.161.50 You can use DMVPN over the internet or over MPLS. tunnel protection ipsec profile protect-gre POD1_R3#, Grandmetric LLC ip mtu 1440 tunnel protection ipsec profile protect-gre < encrypts the traffic passing through this tunnel using ipsec ip route 192.168.161.0 255.255.255.0 172.16.1.3 < The remote LAN can be reached via the remote tunnel IP. tunnel source Loopback0 Next you will need to add IPSEC, this will ensure that traffic is not sent in clear text. I need to connect just 5 sites. Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms, Note : You can use either static routing or a dynamic routing protocol for enabling communication in the DMVPN cloud. NIP 7792433527 ip nhrp network-id 111 200 Vesey Street Seems we are missing the configuration for Router 1, would you mind uploading it if you still have it documented somewhere? Privacy Policy. Use the spesific wildcard masks for R2 and R3. I also showed you how to configure DMVPN phase 1, phase 2 and phase 3. ! interface Loopback0 description To LAN set security-association lifetime seconds 86400 An example is the EIGRP module, which is responsible for sending and receiving EIGRP packets that are encapsulated in the IP. The EIGRP Dual DMVPN Domain Enhancement feature supports the no next-hop self command on dual Dynamic Multipoint VPN (DMVPN) domains in both IPv4 and IPv6 configurations. ! Sending 5, 100-byte ICMP Echos to 192.168.161.50, timeout is 2 seconds: ip nhrp network-id 111 (That is from the Cisco DMVPN Design and Implemenation document) Rack1DMVPN(config-if)# ip hold-time eigrp 100 35 Typically in EIGRP the next hop advertised is the router itself, but in DMVPN you want to make sure the spokes know about each other. 200 Vesey Street Copyright 2022 | Privacy Policy | Terms and Conditions | Hire Me | Contact | Amazon Disclaimer | Delivery Policy. .!!!! dst src state conn-id status ip nhrp nhs 172.16.1.1 > configures NHRP client with the IP address of its NHRP server Hi Harriss, thanks for sharing, this is the most complete lab about DMVPN Ive founded it. Sending 5, 100-byte ICMP Echos to 192.168.161.1, timeout is 2 seconds: This time, we are going to look at BGP. +48 61 271 04 43 DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. We use Elastic Email as our marketing automation service. ip nhrp network-id 1 10.10.10.1 10.10.10.5 QM_IDLE 1007 ACTIVE ip address 172.16.1.3 255.255.255.0 N NATed, L Local, X No Socket Over the years he has acquired several professional certifications such as CCNA, CCNP, CEH, ECSA etc. ! Usually there is no need to have a firewall within the DMVPN topology. This blog entails my own thoughts and ideas, which may not represent the thoughts of Cisco Systems Inc. network 10.1.0.0 0.0.255.255 authentication pre-share VRF info: (vrf in name/id, vrf out name/id) Learn how your comment data is processed. Sending 5, 100-byte ICMP Echos to 192.168.164.1, timeout is 2 seconds: R11 (config)#interface Tunnel1 R11 (config-if)#ip add 10.10.100.11 255.255.255. < Select a private IP subnet for the tunnels, < authentication used for updates between the routers, < Network identification that has to be the same on all the routers, < source of the tunnel is the WAN interface, < designates the tunnel as a mGRE tunnel, < encrypts the traffic passing through this tunnel using ipsec, - > accept connection from any source to accommodate also dynamic spokes, > profile added to the mGRE tunnel for encryption, < The remote LAN can be reached via the remote tunnel IP, Cisco SSL VPN and ASDM Configuration - Port Conflict, < in same subnet as all the other tunnels, > maps the tunnel IP address of the HUB to the WAN IP of the HUB that has to be static, > configures NHRP client with the IP address of its NHRP server, > if a NHRP map is done for this IP another one will not be allowed. .!!!! ! ip nhrp nhs 172.16.1.1 This means that Spoke sites can communicate between them directly without having to go through the Hub. ip address 172.16.1.1 255.255.255.0 < Select a private IP subnet for the tunnels DMVPN Phase 1 Single Hub - EIGRP - Hub example; DMVPN Phase 1 Single Hub - EIGRP - Spoke example; DMVPN Phase 1 Single Hub - IPSec example; . Email: info@grandmetric.com, Router on a stick approach Cisco configuration, Spanning Tree Protocol (STP) Configuration, Cisco Firewall HA ACTIVE STANDBY Failover, SD-WAN Bidirectional Forwarding Detection (BFD), What is Cisco FirePOWER? ip nhrp map 172.16.1.1 10.10.10.1 > maps the tunnel IP address of the HUB to the WAN IP of the HUB that has to be static Metalowa 5, 60-118 Pozna, Poland Bootstrap process VM installation, Cisco Switch and ISE unified port configuration, Connecting Cisco ISE 3.0 node to Active Directory, Connecting Cisco ISE node to Active Directory, Syslog: Configure syslog server logging (Cisco), Cisco FMC - installing certificate for pxGRID, Enhanced Interior Gateway Routing Protocol, Next-generation firewall mechanisms for threat detection, Firewall Network Security attack vectors, Packet is sent from Spoke1 to Spoke2 network via Hub (according to routing table), Spoke1 has this prefix via HUB tunnel IP for which has also NHRP static mapping, Hub routes packet to Spoke2 according to routing table via tunnel, Disable split horizon on hub (Spoke to Spoke prefix advertisement). DMVPN is an overlay hub and spoke technology that allows an enterprise to connect it's offices across an NBMA network. Spoke Configuration The spokes also have very simple configuration: interface Tunnel0 ip nhrp shortcut The shortcut command allows the spoke to accept the redirect message from the hub, and install the shortcut route. z o.o. If you have a very large number of networks sitting behind each spoke (or a very large number of spokes with a couple of networks behind them), the routing table will get very large and Phase 2 DMVPNs don't support using summarization to reduce the size of the routing table. Here is the configuration on R11. ip nhrp map multicast 10.149.1.1 Cisco ASA FirePOWER Services: Traffic redirection with MPF, Cisco ASA: how to enable ASDM access to ASA, Cisco FMC installing certificate for pxGRID, Cisco ISE Post installation tasks verification, Cisco ISE: 1. description DMVPN Tunnel !interface FastEthernet1/0description to Hubip address 192.168.1.1 255.255.255.0duplex fullspeed 100! show crypto engine connection active for phase 1 and phase 2. Metalowa 5, 60-118 Pozna, Poland router eigrp 111 DMVPN Phase 3 Single Hub - EIGRP - Hub example. What about if I have just lets say 16 public ip addresses. .!!!! info@grandmetric.com, Technology: WAN ip nhrp map multicast10.10.10.1 < Send multicast traffic to the Hub only. ul. DMVPN Phase 3 Single Hub - EIGRP - Spoke example Traffic Flow: Packet is sent from Spoke's 1 network to Spoke's 2 network via Hub (according to routing table) Hub routes packet to Spoke2 but in parallel sends back the NHRP Redirect message to Spoke1 containing information about suboptimal path to Spoke2 and tunnel IP of Spoke2 FlexVPN Spoke in Redundant Hub Design with FlexVPN Client Block Configuration Example 16/Sep/2013. +48 61 271 04 43 Tracing the route to 192.168.164.50 Required fields are marked *. R11 (config-if)#ip nhrp authentication DMVPN1 R11 (config-if)#ip nhrp map multicast dynamic ==========================================================================, # Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb The Spoke-to-Spoke tunnels are established, All tunnels are using Multipoint GREwith IPSEC. encr 3des New York, NY 10281 So curiously, how is this config example working if you have statics on the hub for the NBMA networks of the remote routers? Sending 5, 100-byte ICMP Echos to 192.168.161.50, timeout is 2 seconds: +48 61271 04 43 ip address 172.16.1.1 255.255.255.0 interface Tunnel0 ul. description to Internet-WAN Cisco ASA FirePOWER Services: how to install FMC? 2 192.168.161.50 64 msec 20 msec 80 msec EIN: 98-1615498 group 2, crypto isakmp key isakmp1234 address 0.0.0.0 0.0.0.0 < Spoke routers must allow also connections from any IP in order to form IPSECVPN tunnels with other Spokes. I added the route afterwards and by mistake I have put wildcard mask instead of normal subnet mask. ip mtu 1440 < -Reduce the MTU to allow extra overhead from mGRE and IPSEC tunnel mode gre multipoint UpDn Time > Up or Down Time for a Tunnel, ==========================================================================. keepalive 5 10 crypto ipsec transform-set TS esp-3des esp-md5-hmac ip address 192.168.161.1 255.255.255.0 10.10.10.1 10.10.10.9 QM_IDLE 1001 ACTIVE, R1#ping 192.168.161.50 We also looked at an example for a basic DMVPN phase 3 configuration and how to configure RIP, EIGRP and OSPF on top of it.. R1#traceroute 192.168.161.50 R1#, I just noticed that the command to introR1#show crypto isakmp sa Its a good practice though to put a firewall behind the central HUB router to protect and control traffic going towards the internal HUB network. interface GigabitEthernet0/0 EIN: 98-1615498 tunnel source GigabitEthernet0/0 < source of the tunnel is the WAN interface end z o.o. 12/31/2019 at 12:24 PM. ip nhrp map multicast10.10.10.1 < Send multicast traffic to the Hub only. R2 and R3 , should have a default route targetting. R1#ping 192.168.164.50 ! My questions is, does this traffic should be going through the firewall, and if it is, should I put the VPN router in front of the firewall or in the DMZ. Success rate is 80 percent (4/5), round-trip min/avg/max = 60/320/1076 ms ip address 10.10.10.9 255.255.255.252 NIP 7792433527 Imagine to have ISP network where you want to use millions of CPEs where particular traffic has to be GRE encapsulated. Here is the topology we shall use: There is one hub router and two spoke routers. speed auto, interface GigabitEthernet0/1 1 10.10.10.5 (peer public IP) 172.16.1.2 (peer tunnel IP ) UP 07:51:19 D ip nhrp authentication nhrp1234 ip route 192.168.164.0 255.255.255.0 172.16.1.2 < The remote LAN can be reached via the remote tunnel IP load-interval 30 ip address 10.10.10.1 255.255.255.252 ip address 192.168.160.1 255.255.255.0 For better scalability, it is recommended to run a dynamic routing protocols (such as EIGRP) between all the routers. ! As per your DMVNphase 2 configuration mentioned above we tested in a lab however spoke to spoke ping was not working as removed no ip eigrp nexthop self it started working . tunnel mode gre multipoint I followed all the steps of the lab, and it works pretty well on GNS3 routers image (C7200-ADVENTERPRISEK9-M), Version 15.2(4)M7: R1#show dmvpn Legend: Attrb > S Static, D Dynamic, I Incomplete tunnel key 123 keepalive 5 10, crypto isakmp policy 1 DMVPN Phase 3 EIGRP Routing Configuration Tunnel interfaces EIGRP In the first DMVPN lesson we discussed the basics and the different phases. no ip split-horizon eigrp 111 Type:Hub, NHRP Peers:2, # Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb network 172.16.1.0 0.0.0.255 Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. set security-association lifetime seconds 86400 duplex auto Still MPLS is needed for this DMVPN? tunnel key 123 IPv4 Crypto ISAKMP SA description to LAN ip nhrp authentication gmlabs In short, DMVPN is combination of the following technologies: Multipoint GRE (mGRE) Next-Hop Resolution Protocol (NHRP) Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP) Dynamic IPsec encryption Cisco Express Forwarding (CEF) BB router has a static route to 192.168.1./24 network, R2 and R3 should learn it without redistribution. < in same subnet as all the other tunnels, > maps the tunnel IP address of the HUB to the WAN IP of the HUB that has to be static, > configures NHRP client with the IP address of its NHRP server, VPN Failover with HSRP High Availability (Crypto Map Redundancy). 10.10.10.9 10.10.10.1 QM_IDLE 1012 ACTIVE, Type escape sequence to abort. network 172.16.1.0 0.0.0.255. interface Tunnel0 description To: LAN ! group 2 ! tunnel mode gre multipoint ip summary-address eigrp 111 10.0.0.0 255.0.0.0 Success rate is 100 percent (5/5), round-trip min/avg/max = 44/60/92 ms, R1#traceroute 192.168.164.50 Hello, How to enable EIGRP authentication, PBR: Reliable Policy Based Routing (Cisco), Route Map configuration for traffic routing, Cisco ASA: Cisco Anyconnect configuration, DMVPN Phase 1 Single Hub EIGRP Hub example, DMVPN Phase 1 Single Hub EIGRP Spoke example, DMVPN Phase 1 Single Hub OSPF Hub example, DMVPN Phase 1 Single Hub OSPF Spoke example, DMVPN Phase 2 Single Hub EIGRP Hub example, DMVPN Phase 2 Single Hub EIGRP Spoke example, DMVPN Phase 3 Single Hub EIGRP Hub example, DMVPN Phase 3 Single Hub EIGRP Spoke example, DMVPN Phase 3 Single Hub OSPF Hub example, DMVPN Phase 3 Single Hub OSPF Spoke example. ip nhrp network-id 1 < Network identification that has to be the same on all the routers 1 172.16.1.3 56 msec 12 msec 24 msec No, MPLS is not needed for DMVPN. NIP 7792433527 It is used almost exclusively with Hub-and-Spoketopologies where you want to have direct Spoke-to-Spoke VPNtunnels in addition to the Spoke-to-Hub tunnels. tunnel mode gre multipoint ip nhrp network-id 1 Brookfield Place Office You'd need statics (or a default, not shown here) on the spoke routers to reach the NBMA addresses of the other spokes, since it won't be populated from the hub. !!!!! ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. Use these resources to familiarize yourself with the community: Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. On the DMVPN routers you can configure and place an ACL on the WAN interface to allow only the DMVPN traffic protocols (GRE, IPSEC). I run a DMVPN solution in Dual hub mode. VRF info: (vrf in name/id, vrf out name/id) ip nhrp registration timeout 30 no ip redirects mode tunnel tunnel source GigabitEthernet0/0 < source is WAN interface ! Traffic Flow: Packet is sent from Spoke's 1 network to Spoke's 2 network via Hub (according to routing table) Hub routes packet to Spoke2 but in parallel sends back the NHRP Redirect message to Spoke1 containing information about suboptimal path to Spoke2 and tunnel IP of Spoke2. !hostname Router1!ip cef!interface FastEthernet0/0description to Router2ip address 192.168.2.1 255.255.255.0duplex fullspeed 100! Sending 5, 100-byte ICMP Echos to 192.168.164.50, timeout is 2 seconds: load-interval 30 Type escape sequence to abort. 08-29-2017 2 10.10.10.9 172.16.1.3 UP 09:41:33 D, IPv4 Crypto ISAKMP SA keepalive 5 10, crypto isakmp key isakmp1234 address 0.0.0.0 0.0.0.0 < Spoke routers must allow also connections from any IP in order to form IPSECVPN tunnels with other Spokes. encr 3des speed auto, interface Tunnel1 How to enable EIGRP authentication, PBR: Reliable Policy Based Routing (Cisco), Route Map configuration for traffic routing, Cisco ASA: Cisco Anyconnect configuration, DMVPN Phase 1 Single Hub EIGRP Hub example, DMVPN Phase 1 Single Hub EIGRP Spoke example, DMVPN Phase 1 Single Hub OSPF Hub example, DMVPN Phase 1 Single Hub OSPF Spoke example, DMVPN Phase 2 Single Hub EIGRP Hub example, DMVPN Phase 2 Single Hub EIGRP Spoke example, DMVPN Phase 3 Single Hub EIGRP Hub example, DMVPN Phase 3 Single Hub EIGRP Spoke example, DMVPN Phase 3 Single Hub OSPF Hub example, DMVPN Phase 3 Single Hub OSPF Spoke example. ip nhrp map 172.16.1.1 10.149.1.1 ip address dhcp ip nhrp network-id 111 1 172.16.1.2 56 msec 20 msec 28 msec Interface: Tunnel1, IPv4 NHRP Details DMVPN is not a protocol, it is the combination of the following technologies: + Multipoint GRE (mGRE) + Next-Hop Resolution Protocol (NHRP) + Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP) (optional) + Dynamic IPsec encryption (optional) + Cisco Express Forwarding (CEF) IPsec is optional not required.Reply Brookfield Place Office Currently, we only have 1 hub for all EIGRP and DMVPN spokes. ip nhrp authentication nhrp1234 < authentication used for updates between the routers Also, you allow me to send you informational and marketing emails from time-to-time. Email: info@grandmetric.com, Grandmetric Sp. 09:11 PM Your email address will not be published. crypto isakmp policy 1 The Dynamic Multipoint VPN (DMVPN) feature allows users to better scale large and small IP Security (IPsec) Virtual Private Networks (VPNs) by combining generic routing encapsulation (GRE) tunnels, IPsec encryption, and Next Hop Resolution Protocol (NHRP). The only problem with a Phase 2 DMVPN is scalability. Harris Andrea is an Engineer with more than two decades of professional experience in the fields of TCP/IP Networks, Information Security and I.T. ! ip nhrp map: we use this on the spoke to create a static mapping for the hub's tunnel address (172.16.123.1) and the hub's NBMA address (192.168.123.1). Or not. Each Spoke communicates with the NHRP Server (Hub) and registers its public IP address and its private Tunnel Interface IP to the Hub router. some time sh dmvpn not accept in router somain whileuse, Customers Also Viewed These Support Documents, Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP). ! Vendor: Cisco !interface FastEthernet0/1description to Router3ip address 192.168.3.1 255.255.255.0duplex fullspeed 100! ip nhrp authentication gmlabs T1 Route Installed, T2 Nexthop-override Thanks Edilmar for your comment. ip address 10.1.1.1 255.255.255.0 Bootstrap process VM installation, Cisco Switch and ISE unified port configuration, Connecting Cisco ISE 3.0 node to Active Directory, Connecting Cisco ISE node to Active Directory, Syslog: Configure syslog server logging (Cisco), Cisco FMC - installing certificate for pxGRID, Enhanced Interior Gateway Routing Protocol, Next-generation firewall mechanisms for threat detection, Firewall Network Security attack vectors, Packet is sent from Spokes 1 network to Spokes 2 network via Hub (according to routing table), Hub routes packet to Spoke2 but in parallel sends back the NHRP Redirect message to Spoke1 containing information about suboptimal path to Spoke2 and tunnel IP of Spoke2, Spoke1 then issues the NHRP Resolution request of Spokes 2 NBMA IP address to NHS with destination IP of Spokes 2 tunnel, this NHRP Resolution request is sent targeted, Spoke2 after receiving resolution request including NBMA IP of Spoke1 sends the NHRP Resolution reply directly to Spoke1 , Spoke1 after receiving correct NBMA IP of Spoke2 rewrites the CEF entry for destination prefix this procedure is called, Spokes dont trigger NHRP by glean adjacencies but NHRP replies updates the CEF, Disable split horizon on hub (Spoke to Spoke prefix advertisement). What is DMVPN? mode tunnel Email: info@grandmetric.com, Grandmetric Sp. no ip redirects ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. I want to prepare for a new deployment for my DMVPN and EIGRP hub. Each branch site (Spoke) has a permanent IPSECTunnel with the Central site (Hub). set transform-set TS, ip route 192.168.160.0 255.255.255.0 172.16.1.1 < Route for HUB EIGRP, by default, sets the local outbound interface as the next-hop value while advertising a network to a peer, even when advertising routes out of the interface on which . ! interface GigabitEthernet0/0 VPN network 200 Vesey Street ip nhrp registration timeout 30 Grandmetric LLC R1#. ! ! ! 200 Vesey Street Cisco ASA FirePOWER Services: how to install FMC? ! NHRP(Next Hop Resolution Protocol) is used to map the private IPs of Tunnel Interfaces with their corresponding WAN Public IPs. network 172.16.1.0 0.0.0.255 The HUB central router acts as the DMVPN server and the Spoke routers (in branch offices) act as the DMVPN clients. Configure Phase-3 Hierarchical DMVPN with Multi-Subnet Spokes. New York, NY 10281 ip nhrp authentication gmlabs set transform-set TS, ip route 192.168.160.0 255.255.255.0 172.16.1.1 < Route for HUB UpDn Time > Up or Down Time for a Tunnel description WAN to Internet +48 61271 04 43 hash md5 !crypto ipsec profile protect-gre Is this layout supporting a NAT scenario? This configuration will be added to each router except router 1. By submitting this form, you agree that the information you provide will be transferred to Elastic Email for processing in accordance with their ip nhrp registration no-unique > if a NHRP map is done for this IP another one will not be allowed It means I have enough addresses to interconnect my sites. ip nhrp shortcut Area: DMVPN Yes absolutely there must be reachability between the public IP addresses of all routers. New York, NY 10281 Many times, people does not show this reachability between spokes public IP addresses and implement topology with switch which automatically provided this reachability among Routers. interface GigabitEthernet0/1 Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. tunnel protection ipsec profile DMVPN_PROFILE One of the routers has DHCP assigned IP on WAN and the other one has static WAN IP. 10.10.10.5 10.10.10.1 QM_IDLE 1011 ACTIVE > IPsec connectivity between routers There should be first reachability between all public IP addresses? NHS Status: E > Expecting Replies, R > Responding, W > Waiting Cisco DMVPN Configuration Example Written By Harris Andrea Dynamic Multipoint VPN (DMVPN) is a Cisco VPN solution used when high scalability and minimal configuration complexity is required in connecting branch offices to a central HQ Hub site. C CTS Capable set transform-set TS, ! Normally RIP will work as well. duplex auto IPv4 Crypto ISAKMP SA ! ip route 192.168.161.0 255.255.255.0 172.16.1.3 < Route for other Spoke site, interface GigabitEthernet0/0 :). Tracing the route to 192.168.161.50 crypto ipsec transform-set TS esp-3des esp-md5-hmac Cisco IOS/CCP - Configure DMVPN with Cisco CP 27/Sep/2011. ip address 10.149.1.1 255.255.255.0 Your config is misleading guys here. Platform: ISR 1800, 2800, 3800, 1900, 2900, 3900, Platforms: 4300, 4400, R1: dst src state conn-id status ul. interface Loopback 1 DMVPNis one of the most scalable and most efficient VPN types supported by Cisco. 2 192.168.164.50 28 msec 72 msec 48 msec .!!!! Configure IPSEC on HUB ! ip address 192.168.164.1 255.255.255.0 mGRE tunnel tunnel protection ipsec profile DMVPN_PROFILE Some links below may open a new browser window to display the document you selected. ip nhrp map multicast 10.149.1.1 description TO Internet 03:47 AM. Web. I have fixed the ip route command. In short, DMVPN is combination of the following technologies: Once you have physical connectivity you can add the DMVPN configuration. 1 10.10.10.9 172.16.1.3 UP 00:25:50 D, R1#show crypto isakmp sa no ip redirects z o.o. !interface FastEthernet1/1description to Router4ip address 192.168.4.1 255.255.255.0duplex fullspeed 100! Cisco IPsec Tunnel vs Transport Mode with Example Config, Site to Site IPSEC VPN Between Cisco Router and Juniper Security Gateway, Site-to-Site IPSEC VPN Between Cisco ASA and pfSense, Site-to-Site IPSEC VPN Between Two Cisco ASA one with Dynamic IP. My current config on the hub and spokes is as follows: HUB info@grandmetric.com, router eigrp 111 no ip redirects The EIGRP module is also responsible for parsing EIGRP packets and informing DUAL about the new information received. Although I had EIGRP spoke neighbors. dst src state conn-id status ul. Enter your Email below to Download our Free Cisco Commands Cheat Sheets for Routers, Switches and ASA Firewalls. Phone: +1 302 691 9410 stable for 8-9 weeks and someothers dropping every few weeks I realised 2 days ago that all the EIGRP neighbors dropped the same . network 10.1.3.0 0.0.0.255 ip nhrp authentication nhrp1234 mode tunnel New here? R3 Spoke configuration: router eigrp 111 - edited This will be stored in the NHRP cache of the spoke router. ! Thus, the Hub router will store all mappings for. Your email address will not be published. set security-association lifetime seconds 86400 Finding Feature Information Prerequisites for Dynamic Multipoint VPN (DMVPN) Here's the topology we will use: interface Tunnel1 ! Tracing the route to 192.168.161.50 crypto ipsec transform-set TS esp-3des esp-md5-hmac Type escape sequence to abort. Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms, Type escape sequence to abort. As an Amazon Associate I earn from qualifying purchases. DMVPN is one of the most scalable and most efficient VPN types supported by Cisco. ip address 172.16.1.2 255.255.255.0 no ip redirects ip nhrp holdtime 60 This configuration is for a Phase 2 DMVPN - which should probably be noted somewhere here (probably in the title). As always great stuff, easy to follow and well explained. tunnel source Loopback0 When the stub feature is configured on an EIGRP speaker, it causes EIGRP to only advertise routes of a certain type. Find answers to your questions by entering keywords or phrases in the Search bar above. R1#traceroute 192.168.161.50 2 192.168.161.50 64 msec 20 msec 80 msec DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. He is a self-published author of two books ("Cisco ASA Firewall Fundamentals" and "Cisco VPN Configuration Guide") which are available at Amazon and on this website as well. ip nhrp shortcut VRF info: (vrf in name/id, vrf out name/id) ip address 172.16.1.2 255.255.255.0 < in same subnet as all the other tunnels Perez, ! This document gives information about DMVPN with a configuration example. I tried dropping a similar config in and I see the FD as infinity on the hub for those remote sites NBMA networks, since the statics exist on the hub -- at which point, the EIGRP route for the NBMA never makes it from hub-to-spoke and traffic is broken between spokes. tunnel key 123, Grandmetric LLC New York, NY 10281 Interface Configuration duplex auto Email: info@grandmetric.com, Router on a stick approach Cisco configuration, Spanning Tree Protocol (STP) Configuration, Cisco Firewall HA ACTIVE STANDBY Failover, SD-WAN Bidirectional Forwarding Detection (BFD), What is Cisco FirePOWER? ip nhrp map 172.16.1.1 10.10.10.1 > maps the tunnel IP address of the HUB to the WAN IP of the HUB that has to be static crypto ipsec profile protect-gre > profile added to the mGRE tunnel for encryption no ip redirects Tunnel source Brookfield Place Office If you want to design a VPN solution to connect numerous sites between them (I would say more than 10 sites), then DMVPN using Cisco routers is an ideal choice. In this lesson we'll take a look how we can configure EIGRP on a DMVPN phase 3 network. z o.o. Phone: +1 302 691 94 10, GRANDMETRIC Sp. Configure static routing on HUB (dynamic routing is recommended for larger networks) Yes you are right. Configure the network above with EIGRP using Autonomous system number 90. ip nhrp map 172.16.1.1 10.149.1.1 Phone: +1 302 691 9410 Than suddenly you will end in different configuration rather than this one. interface Tunnel0 ip nhrp redirect This enables the hub to inform a spoke of a better path if one exists. # Ent > Number of NHRP entries with same NBMA peer duplex auto. Success rate is 80 percent (4/5), round-trip min/avg/max = 60/320/1076 ms Technology: WAN Area: DMVPN Vendor: Cisco Software: 12.X , 15.X ISR Platform: ISR 1800, 2800, 3800, 1900, 2900, 3900, Platforms: 4300, 4400 Traffic Flow: Packet is sent from Spoke1 to Spoke2 network via Hub (according to routing table) Spoke1 has this prefix via HUB tunnel IP for which has also NHRP static mapping 1 172.16.1.3 56 msec 12 msec 24 msec please comment. Dynamic Multipoint VPN (DMVPN) is a Cisco VPN solution used when high scalability and minimal configuration complexity is required in connecting branch offices to a central HQ Hub site. ! I am still fighting to understand something. I use EIGRP as a routing protocol between the HUb and Spokes. some time sh dmvpn not accept in router somain whileuse show crypto isakmp sa for phase 1 policy and. usually external interfaces for R2,R3,R4 have dynamic IP (from ISP), how this config will be for that situation ? To make this a Phase 3 DMVPN is quite easy. Metalowa 5, 60-118 Pozna, Poland R1 Hub configuration example: router eigrp 111 network 10.1.1.0 0.0.0.255 network 172.16.1. Although the most common topology is Hub-and-spoke setup, DMVPN supports full mesh connectivity since all sites can communicate between them without having to configure static VPN tunnels between each other. DMVPN configuration: Configuration of the first HUB (R11 and R12): Let's start by configuring our first DMVPN HUB. hash md5 < Send multicast traffic to the Hub only. 0.0.0.255. interface Tunnel0 ip address 172.16.1.1 255.255.255. tunnel source GigabitEthernet0/0 To understand what these commands do, isn't so easy. The HUB router must have static public IP address on its WAN interface. N NATed, L Local, X No Socket In this tutorial we have used static routing but for larger networks you should enable dynamic routing such as EIGRP. Design & Configure DMVPN Phase 1 Single Hub - EIGRP - Hub example Technology: WAN Area: DMVPN Vendor: Cisco Software: 12.X , 15.X ISR Platform: ISR 1800, 2800, 3800, 1900, 2900, 3900, Platforms: 4300, 4400 Traffic Flow: Packet is sent from Spoke1 to Spoke2 network via Hub (according to routing table) Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. Configuring Dynamic Multipoint VPN (DMVPN) using GRE over IPSec between Multiple Routers, Hard Move Migration from DMVPN to FlexVPN on a Different Hub, Hard Move Migration from DMVPN to FlexVPN on Same Devices, FlexVPN Spoke in Redundant Hub Design with a Dual Cloud Approach Configuration Example, FlexVPN Spoke in Redundant Hub Design with FlexVPN Client Block Configuration Example, Cisco IOS/CCP - Configure DMVPN with Cisco CP, Configure Phase-3 Hierarchical DMVPN with Multi-Subnet Spokes, Configure Zero Touch Deployment (ZTD) of VPN Remote Offices/Spokes, DMVPN Hub as the CA Server for the DMVPN Network Configuration Example, All Support Documentation for this Series. ip nhrp map multicast: here we specify which destinations should receive broadcast or multicast traffic through the tunnel interface. Routing Table The introduction, EIGRP: 2. DMVPN is supported only on Cisco Routers. network 10.1.2.0 0.0.0.255 Configure Zero Touch Deployment (ZTD) of VPN Remote Offices/Spokes. The above NHRPmappings will be kept on the NHRP Server router (HUB). Type escape sequence to abort. authentication pre-share tunnel mode gre multipoint < designates the tunnel as a mGRE tunnel ip nhrp registration no-unique > if a NHRP map is done for this IP another one will not be allowed EIN: 98-1615498 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Is it possible to use this configuration with 1 central Hub router with all four spokes connecting to the Hub? ip nhrp map multicast dynamic 10.10.10.1 10.10.10.5 QM_IDLE 1007 ACTIVE no auto-summary ! Why you are calling this DMVPN when you are using static routing at the first instance. tunnel source Loopback0 Additionally EIGRP shouldn't work as a classful routing protocol. Thank you so much. duplex auto NHS Status: E > Expecting Replies, R > Responding, W > Waiting speed auto, interface Tunnel1 For this situation is it required to use dynamic IP routing - for example - EIGRP ? Software: 12.X , 15.X ISR Can I run RIP for this Public connectivity and therefore EIGRP for LAN connectivity? The R1 is your ISP router - it's configuration is not relevant (except that the external interfaces of the other routers should be able to reach each other). NIP 7792433527 DMVPN Hub as the CA Server for the DMVPN Network . In our first DMVPN lesson we explained the basics and the differences of the three phases. crypto ipsec profile protect-gre ip nhrp nhs 172.16.1.1 Make an example where DYNAMIC logic has to be used. To enable dynamic routing i am using EIGRP add the following configuration to each routers except router 1. Terms of Use and load-interval 30 Grandmetric LLC ip mtu 1440 01-21-2013 !end, Excellent work Did the scenario using the eigrp named mode (kept it simple). Configure the tunnel interface , which basically is an enhanced GRE tunnel (Multipoint GRE) ip nhrp nhs 172.16.1.1 > configures NHRP client with the IP address of its NHRP server This blog is NOT affiliated or endorsed by Cisco Systems Inc. All product names, logos and artwork are copyrights/trademarks of their respective owners. The maximum hold time should not exceed 7 times the EIGRP hello timers, or 35 seconds. When a spoke needs to send a packet to a destination (private) subnet on another spoke, it queries the NHRPserver in order to learn the public (outside WAN) address of the destination (target) spoke. The introduction, EIGRP: 2. ip address 172.16.1.3 255.255.255.0 < in same subnet as all the other tunnels ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. If there will be a change of IP on HUB site what you would do with millions of these CPEs deployed? I know that gre is pain most of the times but we have to live with that. Type escape sequence to abort. ! ! In this Cisco DMVPN configuration example we present a Hub and Spoke topology with a central HUB router that acts as a DMVPN server and 2 spoke routers that act as DMVPN clients. Brookfield Place Office For example, to only advertise routes that are directly connected or only summary routes. speed auto, interface GigabitEthernet0/1 end interface Tunnel0 We Provide Technical Tutorials and Configuration Examples about TCP/IP Networks with focus on Cisco Products and Technologies. ip nhrp holdtime 60 tunnel mode gre multipoint All the routers involved in this tutorial are CISCO1921/K9. ip route 192.168.164.0 255.255.255.0 172.16.1.2 < Route for other Spoke site, Legend: Attrb > S Static, D Dynamic, I Incomplete We're preparing to get 2 new Cisco routers for redundancy. I just noticed that the lab has the command ip route wrong, i think that you hace to write the subnetmask no the wildcard. # Ent > Number of NHRP entries with same NBMA peer ! One of the best practices when deploying EIGRP in a DMVPN or otherwise is to make use of the stub feature. Metalowa 5, 60-118 Pozna, Poland The most common implementations of DMVPN are being used as backup WAN connections across the internet. 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