usually external interfaces for R2,R3,R4 have dynamic IP (from ISP), how this config will be for that situation ? 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. 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. Configure Zero Touch Deployment (ZTD) of VPN Remote Offices/Spokes. There should be first reachability between all public IP addresses? 2 192.168.161.50 64 msec 20 msec 80 msec The Spoke-to-Spoke tunnels are established, All tunnels are using Multipoint GREwith IPSEC. ip address 172.16.1.3 255.255.255.0 08-29-2017 What is DMVPN? 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 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. Hello, Type:Hub, NHRP Peers:2, # Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb 2 192.168.164.50 28 msec 72 msec 48 msec This document gives information about DMVPN with a configuration example. tunnel mode gre multipoint description to LAN ip nhrp network-id 1 < Network identification that has to be the same on all the routers tunnel protection ipsec profile DMVPN_PROFILE NHS Status: E > Expecting Replies, R > Responding, W > Waiting .!!!! ip nhrp map 172.16.1.1 10.149.1.1 ip nhrp nhs 172.16.1.1 > configures NHRP client with the IP address of its NHRP server Type escape sequence to abort. Required fields are marked *. Terms of Use and Type escape sequence to abort. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. ! no ip split-horizon eigrp 111 ip mtu 1440 ip nhrp authentication nhrp1234 I use EIGRP as a routing protocol between the HUb and Spokes. tunnel protection ipsec profile DMVPN_PROFILE Imagine to have ISP network where you want to use millions of CPEs where particular traffic has to be GRE encapsulated. ip nhrp network-id 1 .!!!! ip nhrp network-id 1 Your config is misleading guys here. Legend: Attrb > S Static, D Dynamic, I Incomplete In this lesson we'll take a look how we can configure EIGRP on a DMVPN phase 3 network. Sending 5, 100-byte ICMP Echos to 192.168.161.50, timeout is 2 seconds: EIN: 98-1615498 - edited 1 172.16.1.2 56 msec 20 msec 28 msec ip address 172.16.1.2 255.255.255.0 < in same subnet as all the other tunnels ip address 192.168.161.1 255.255.255.0 R2 and R3 , should have a default route targetting. Some links below may open a new browser window to display the document you selected. VPN network tunnel protection ipsec profile protect-gre < encrypts the traffic passing through this tunnel using ipsec Thus, the Hub router will store all mappings for. tunnel source Loopback0 ! description WAN to Internet Sending 5, 100-byte ICMP Echos to 192.168.164.1, timeout is 2 seconds: !interface FastEthernet1/1description to Router4ip address 192.168.4.1 255.255.255.0duplex fullspeed 100! 1 10.10.10.9 172.16.1.3 UP 00:25:50 D, R1#show crypto isakmp sa R1#ping 192.168.164.50 Your email address will not be published. ! I have fixed the ip route command. For this situation is it required to use dynamic IP routing - for example - EIGRP ? ip nhrp holdtime 60 ip nhrp nhs 172.16.1.1 > configures NHRP client with the IP address of its NHRP server (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. This configuration is for a Phase 2 DMVPN - which should probably be noted somewhere here (probably in the title). DMVPN Phase 3 Single Hub - EIGRP - Hub example. ip route 192.168.161.0 255.255.255.0 172.16.1.3 < Route for other Spoke site, interface GigabitEthernet0/0 < Send multicast traffic to the Hub only. 10.10.10.9 10.10.10.1 QM_IDLE 1012 ACTIVE, Type escape sequence to abort. set security-association lifetime seconds 86400 For example, to only advertise routes that are directly connected or only summary routes. To make this a Phase 3 DMVPN is quite easy. Make an example where DYNAMIC logic has to be used. I am still fighting to understand something. speed auto, interface Tunnel1 Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. By submitting this form, you agree that the information you provide will be transferred to Elastic Email for processing in accordance with their 200 Vesey Street T1 Route Installed, T2 Nexthop-override The hub router requires a static IP configured on the WAN interface facing the internet. I added the route afterwards and by mistake I have put wildcard mask instead of normal subnet mask. Type escape sequence to abort. Interface: Tunnel1, IPv4 NHRP Details Metalowa 5, 60-118 Pozna, Poland Still MPLS is needed for this DMVPN? ip nhrp map multicast10.10.10.1 < Send multicast traffic to the Hub only. hash md5 description To LAN 10.10.10.1 10.10.10.9 QM_IDLE 1001 ACTIVE, R1#ping 192.168.161.50 mGRE tunnel 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. 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). duplex auto NIP 7792433527 Find answers to your questions by entering keywords or phrases in the Search bar above. N NATed, L Local, X No Socket Your email address will not be published. To enable dynamic routing i am using EIGRP add the following configuration to each routers except router 1. NHRP(Next Hop Resolution Protocol) is used to map the private IPs of Tunnel Interfaces with their corresponding WAN Public IPs. 1 10.10.10.5 (peer public IP) 172.16.1.2 (peer tunnel IP ) UP 07:51:19 D R1#, I just noticed that the command to introR1#show crypto isakmp sa ! stable for 8-9 weeks and someothers dropping every few weeks I realised 2 days ago that all the EIGRP neighbors dropped the same . duplex auto Configure Phase-3 Hierarchical DMVPN with Multi-Subnet Spokes. 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. The HUB central router acts as the DMVPN server and the Spoke routers (in branch offices) act as the DMVPN clients. set transform-set TS, ! ip address 172.16.1.2 255.255.255.0 I also showed you how to configure DMVPN phase 1, phase 2 and phase 3. crypto ipsec transform-set TS esp-3des esp-md5-hmac Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms, Type escape sequence to abort. tunnel source GigabitEthernet0/0 < source is WAN interface No, MPLS is not needed for DMVPN. ip nhrp holdtime 60 # Ent > Number of NHRP entries with same NBMA peer Brookfield Place Office Use the spesific wildcard masks for R2 and R3. Email: info@grandmetric.com, Grandmetric Sp. DMVPN Phase 3 EIGRP Routing Configuration Tunnel interfaces EIGRP In the first DMVPN lesson we discussed the basics and the different phases. 2 192.168.161.50 64 msec 20 msec 80 msec duplex auto Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. Thanks Edilmar for your comment. ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. Phone: +1 302 691 94 10, GRANDMETRIC Sp. set security-association lifetime seconds 86400 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? Phone: +1 302 691 9410 Copyright 2022 | Privacy Policy | Terms and Conditions | Hire Me | Contact | Amazon Disclaimer | Delivery Policy. This time, we are going to look at BGP. authentication pre-share interface GigabitEthernet0/0 Yes you are right. Web. set transform-set TS, ip route 192.168.160.0 255.255.255.0 172.16.1.1 < Route for HUB I need to connect just 5 sites. encr 3des ip nhrp map multicast 10.149.1.1 Is this layout supporting a NAT scenario? If there will be a change of IP on HUB site what you would do with millions of these CPEs deployed? tunnel mode gre multipoint info@grandmetric.com, Technology: WAN 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. Next you will need to add IPSEC, this will ensure that traffic is not sent in clear text. 09:11 PM ip nhrp authentication gmlabs Metalowa 5, 60-118 Pozna, Poland duplex auto .!!!! network 10.1.3.0 0.0.0.255 Than suddenly you will end in different configuration rather than this one. ip address 192.168.160.1 255.255.255.0 BB router has a static route to 192.168.1./24 network, R2 and R3 should learn it without redistribution. All the routers involved in this tutorial are CISCO1921/K9. C CTS Capable ip nhrp registration no-unique > if a NHRP map is done for this IP another one will not be allowed UpDn Time > Up or Down Time for a Tunnel Platform: ISR 1800, 2800, 3800, 1900, 2900, 3900, Platforms: 4300, 4400, R1: DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. please comment. ip nhrp map multicast10.10.10.1 < Send multicast traffic to the Hub only. DMVPN Hub as the CA Server for the DMVPN Network . Type escape sequence to abort. 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. Privacy Policy. interface GigabitEthernet0/1 interface Loopback 1 ip mtu 1440 description TO Internet keepalive 5 10 Configure the network above with EIGRP using Autonomous system number 90. 10.10.10.1 10.10.10.5 QM_IDLE 1007 ACTIVE The HUB router must have static public IP address on its WAN interface. ip nhrp registration no-unique > if a NHRP map is done for this IP another one will not be allowed The introduction, EIGRP: 2. Brookfield Place Office 10.10.10.1 10.10.10.9 QM_IDLE 1001 ACTIVE, R1#ping 192.168.161.50 +48 61 271 04 43 ip nhrp map multicast: here we specify which destinations should receive broadcast or multicast traffic through the tunnel interface. crypto ipsec profile protect-gre > profile added to the mGRE tunnel for encryption ip nhrp network-id 111 ==========================================================================, # Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb no ip redirects UpDn Time > Up or Down Time for a Tunnel, ==========================================================================. In this tutorial we have used static routing but for larger networks you should enable dynamic routing such as EIGRP. interface Tunnel0 Routing Table Software: 12.X , 15.X ISR 10.10.10.5 10.10.10.1 QM_IDLE 1011 ACTIVE > IPsec connectivity between routers ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. 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. 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 nhs 172.16.1.1 Although I had EIGRP spoke neighbors. tunnel source GigabitEthernet0/0 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 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). Can I run RIP for this Public connectivity and therefore EIGRP for LAN connectivity? tunnel key 123, Grandmetric LLC ip nhrp registration timeout 30 Here is the configuration on R11. load-interval 30 EIN: 98-1615498 R1#traceroute 192.168.161.50 ip nhrp network-id 111 no ip redirects Success rate is 80 percent (4/5), round-trip min/avg/max = 60/320/1076 ms One of the routers has DHCP assigned IP on WAN and the other one has static WAN IP. One of the best practices when deploying EIGRP in a DMVPN or otherwise is to make use of the stub feature. speed auto, interface GigabitEthernet0/1 ! !crypto ipsec profile protect-gre 200 Vesey Street tunnel key 123 # Ent > Number of NHRP entries with same NBMA peer ul. speed auto, interface GigabitEthernet0/1 !interface FastEthernet1/0description to Hubip address 192.168.1.1 255.255.255.0duplex fullspeed 100! tunnel mode gre multipoint Yes absolutely there must be reachability between the public IP addresses of all routers. In our first DMVPN lesson we explained the basics and the differences of the three phases. ! Sending 5, 100-byte ICMP Echos to 192.168.164.50, timeout is 2 seconds: Sending 5, 100-byte ICMP Echos to 192.168.161.1, timeout is 2 seconds: description DMVPN Tunnel The maximum hold time should not exceed 7 times the EIGRP hello timers, or 35 seconds. ip mtu 1440 < -Reduce the MTU to allow extra overhead from mGRE and IPSEC ! crypto ipsec transform-set TS esp-3des esp-md5-hmac When the stub feature is configured on an EIGRP speaker, it causes EIGRP to only advertise routes of a certain type. show crypto engine connection active for phase 1 and phase 2. DMVPN is one of the most scalable and most efficient VPN types supported by Cisco. ! interface Tunnel0 end crypto isakmp key isakmp1234 address 0.0.0.0 0.0.0.0 - > accept connection from any source to accommodate also dynamic spokes ip nhrp nhs 172.16.1.1 Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. 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. ! Additionally EIGRP shouldn't work as a classful routing protocol. 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 z o.o. interface GigabitEthernet0/0 ! Configure the tunnel interface , which basically is an enhanced GRE tunnel (Multipoint GRE) Hi Harriss, thanks for sharing, this is the most complete lab about DMVPN Ive founded it. Sending 5, 100-byte ICMP Echos to 192.168.161.50, timeout is 2 seconds: < 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. Each Spoke communicates with the NHRP Server (Hub) and registers its public IP address and its private Tunnel Interface IP to the Hub router. no ip redirects +48 61271 04 43 EIN: 98-1615498 ip nhrp registration timeout 30 ! +48 61 271 04 43 03:47 AM. 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. 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. It is just another WAN connectivity option. New York, NY 10281 duplex auto. Phone: +1 302 691 9410 The only problem with a Phase 2 DMVPN is scalability. ip address dhcp 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. router eigrp 111 VRF info: (vrf in name/id, vrf out name/id) We Provide Technical Tutorials and Configuration Examples about TCP/IP Networks with focus on Cisco Products and Technologies. ! You can use DMVPN over the internet or over MPLS. info@grandmetric.com, router eigrp 111 Is it possible to use this configuration with 1 central Hub router with all four spokes connecting to the Hub? DMVPN configuration: Configuration of the first HUB (R11 and R12): Let's start by configuring our first DMVPN HUB. tunnel protection ipsec profile protect-gre no auto-summary N NATed, L Local, X No Socket interface Tunnel1 group 2 Normally RIP will work as well. network 10.1.2.0 0.0.0.255 !hostname Router1!ip cef!interface FastEthernet0/0description to Router2ip address 192.168.2.1 255.255.255.0duplex fullspeed 100! This configuration will be added to each router except router 1. tunnel source Loopback0 To understand what these commands do, isn't so easy. load-interval 30 DMVPNis one of the most scalable and most efficient VPN types supported by Cisco. speed auto, interface Tunnel1 z o.o. 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. end ip address 10.1.1.1 255.255.255.0 R3 Spoke configuration: router eigrp 111 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. DMVPN is supported only on Cisco Routers. interface Tunnel0 ip nhrp redirect This enables the hub to inform a spoke of a better path if one exists. I know that gre is pain most of the times but we have to live with that. Tracing the route to 192.168.161.50 no ip redirects ip nhrp shortcut ! R1#. tunnel mode gre multipoint < designates the tunnel as a mGRE tunnel Tunnel source crypto isakmp policy 1 Seems we are missing the configuration for Router 1, would you mind uploading it if you still have it documented somewhere? ! network 172.16.1.0 0.0.0.255 In short, DMVPN is combination of the following technologies: Once you have physical connectivity you can add the DMVPN configuration. EIN: 98-1615498 ! My current config on the hub and spokes is as follows: HUB As always great stuff, easy to follow and well explained. ip address 10.10.10.1 255.255.255.252 dst src state conn-id status 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 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 We're preparing to get 2 new Cisco routers for redundancy. Phone: +1 302 691 94 10, GRANDMETRIC Sp. Metalowa 5, 60-118 Pozna, Poland Cisco ASA FirePOWER Services: how to install FMC? 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. no ip redirects New York, NY 10281 ip nhrp network-id 111 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). 1 172.16.1.3 56 msec 12 msec 24 msec crypto ipsec profile protect-gre IPv4 Crypto ISAKMP SA interface Loopback0 The introduction, EIGRP: 2. some time sh dmvpn not accept in router somain whileuse, Customers Also Viewed These Support Documents, Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP). :). z o.o. Cisco IOS/CCP - Configure DMVPN with Cisco CP 27/Sep/2011. load-interval 30 DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. 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 mode tunnel ip nhrp map 172.16.1.1 10.149.1.1 On the DMVPN routers you can configure and place an ACL on the WAN interface to allow only the DMVPN traffic protocols (GRE, IPSEC). 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. ip nhrp authentication gmlabs So curiously, how is this config example working if you have statics on the hub for the NBMA networks of the remote routers? some time sh dmvpn not accept in router somain whileuse show crypto isakmp sa for phase 1 policy and. This blog is NOT affiliated or endorsed by Cisco Systems Inc. All product names, logos and artwork are copyrights/trademarks of their respective owners. Success rate is 100 percent (5/5), round-trip min/avg/max = 44/60/92 ms, R1#traceroute 192.168.164.50 The above NHRPmappings will be kept on the NHRP Server router (HUB). mode tunnel NIP 7792433527 dst src state conn-id status encr 3des I want to prepare for a new deployment for my DMVPN and EIGRP hub. Grandmetric LLC .!!!! 12/31/2019 at 12:24 PM. 1 172.16.1.3 56 msec 12 msec 24 msec ip address 172.16.1.1 255.255.255.0 < Select a private IP subnet for the tunnels 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? Tracing the route to 192.168.161.50 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 Configure IPSEC on HUB Here's the topology we will use: 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 . ip address 172.16.1.3 255.255.255.0 < in same subnet as all the other tunnels network 172.16.1.0 0.0.0.255. interface Tunnel0 NIP 7792433527 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 ul. ! NIP 7792433527 It means I have enough addresses to interconnect my sites. The EIGRP module is also responsible for parsing EIGRP packets and informing DUAL about the new information received. 200 Vesey Street Currently, we only have 1 hub for all EIGRP and DMVPN spokes. !end, Excellent work Did the scenario using the eigrp named mode (kept it simple). The most common implementations of DMVPN are being used as backup WAN connections across the internet. What about if I have just lets say 16 public ip addresses. mode tunnel ! 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 ip nhrp authentication nhrp1234 ip nhrp shortcut New here? ! Metalowa 5, 60-118 Pozna, Poland 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 . crypto ipsec transform-set TS esp-3des esp-md5-hmac tunnel mode gre multipoint 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. R11 (config)#interface Tunnel1 R11 (config-if)#ip add 10.10.100.11 255.255.255. ip address 10.149.1.1 255.255.255.0 Learn how your comment data is processed. IPv4 Crypto ISAKMP SA ! Brookfield Place Office 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. ul. Thank you so much. +48 61271 04 43 Why you are calling this DMVPN when you are using static routing at the first instance. 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. ! This will be stored in the NHRP cache of the spoke router. set transform-set TS, ip route 192.168.160.0 255.255.255.0 172.16.1.1 < Route for HUB 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. z o.o. Success rate is 80 percent (4/5), round-trip min/avg/max = 60/320/1076 ms POD1_R3#, Grandmetric LLC Type escape sequence to abort. ip nhrp map multicast 10.149.1.1 1 10.10.10.5 172.16.1.2 UP 00:15:44 D Each branch site (Spoke) has a permanent IPSECTunnel with the Central site (Hub). 200 Vesey Street tunnel protection ipsec profile protect-gre network 172.16.1.0 0.0.0.255 hash md5 tunnel key 123 Type escape sequence to abort. ip summary-address eigrp 111 10.0.0.0 255.0.0.0 Vendor: Cisco Email: info@grandmetric.com, Grandmetric Sp. ip address 172.16.1.1 255.255.255.0 ! FlexVPN Spoke in Redundant Hub Design with FlexVPN Client Block Configuration Example 16/Sep/2013. Interface Configuration R1#traceroute 192.168.161.50 I just noticed that the lab has the command ip route wrong, i think that you hace to write the subnetmask no the wildcard. ! 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) Cisco ASA FirePOWER Services: how to install FMC? ul. ! tunnel source Loopback0 As an Amazon Associate I earn from qualifying purchases. Finding Feature Information Prerequisites for Dynamic Multipoint VPN (DMVPN) ip address 10.10.10.9 255.255.255.252 Configure static routing on HUB (dynamic routing is recommended for larger networks) Enter your Email below to Download our Free Cisco Commands Cheat Sheets for Routers, Switches and ASA Firewalls. 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). We use Elastic Email as our marketing automation service. description to Internet-WAN ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. 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). ! 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. Or not. 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. tunnel mode gre multipoint Here is the topology we shall use: There is one hub router and two spoke routers. keepalive 5 10, crypto isakmp policy 1 DMVPN Phase 1 Single Hub - EIGRP - Hub example; DMVPN Phase 1 Single Hub - EIGRP - Spoke example; DMVPN Phase 1 Single Hub - IPSec example; . VRF info: (vrf in name/id, vrf out name/id) Over the years he has acquired several professional certifications such as CCNA, CCNP, CEH, ECSA etc. This means that Spoke sites can communicate between them directly without having to go through the Hub. 10.10.10.1 10.10.10.5 QM_IDLE 1007 ACTIVE 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. Grandmetric LLC DMVPN is an overlay hub and spoke technology that allows an enterprise to connect it's offices across an NBMA network. description To: LAN 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. Area: DMVPN ip nhrp map multicast dynamic An example is the EIGRP module, which is responsible for sending and receiving EIGRP packets that are encapsulated in the IP. ! VRF info: (vrf in name/id, vrf out name/id) dst src state conn-id status ip nhrp authentication gmlabs 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. NHS Status: E > Expecting Replies, R > Responding, W > Waiting Perez, < 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). ip nhrp authentication nhrp1234 < authentication used for updates between the routers tunnel source GigabitEthernet0/0 < source of the tunnel is the WAN interface ip address 192.168.164.1 255.255.255.0 authentication pre-share 0.0.0.255. interface Tunnel0 ip address 172.16.1.1 255.255.255. !interface FastEthernet0/1description to Router3ip address 192.168.3.1 255.255.255.0duplex 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. New York, NY 10281 R1 Hub configuration example: router eigrp 111 network 10.1.1.0 0.0.0.255 network 172.16.1. no ip redirects Usually there is no need to have a firewall within the DMVPN topology. 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. For better scalability, it is recommended to run a dynamic routing protocols (such as EIGRP) between all the routers. I run a DMVPN solution in Dual hub mode. 2 10.10.10.9 172.16.1.3 UP 09:41:33 D, IPv4 Crypto ISAKMP SA network 10.1.0.0 0.0.255.255 Also, you allow me to send you informational and marketing emails from time-to-time. 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. set security-association lifetime seconds 86400 !!!!! EIGRP asks DUAL to make routing decisions, but the results are stored in the IP routing table. Tracing the route to 192.168.164.50 01-21-2013 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.. New York, NY 10281 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) This blog entails my own thoughts and ideas, which may not represent the thoughts of Cisco Systems Inc. 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