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). Yes absolutely there must be reachability between the public IP addresses of all routers. ! (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. 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. Configure static routing on HUB (dynamic routing is recommended for larger networks) Success rate is 100 percent (5/5), round-trip min/avg/max = 44/60/92 ms, R1#traceroute 192.168.164.50 N NATed, L Local, X No Socket ! 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? description DMVPN Tunnel tunnel source GigabitEthernet0/0 < source of the tunnel is the WAN interface crypto ipsec transform-set TS esp-3des esp-md5-hmac ul. 200 Vesey Street Find answers to your questions by entering keywords or phrases in the Search bar above. Success rate is 80 percent (4/5), round-trip min/avg/max = 60/320/1076 ms speed auto, interface Tunnel1 Your email address will not be published. VPN network 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. tunnel key 123 Interface Configuration Configure the tunnel interface , which basically is an enhanced GRE tunnel (Multipoint GRE) please comment. NIP 7792433527 2 192.168.164.50 28 msec 72 msec 48 msec ip nhrp network-id 111 Success rate is 80 percent (4/5), round-trip min/avg/max = 60/320/1076 ms Still MPLS is needed for this DMVPN? 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. Cisco IOS/CCP - Configure DMVPN with Cisco CP 27/Sep/2011. dst src state conn-id status I also showed you how to configure DMVPN phase 1, phase 2 and phase 3. ip address 10.10.10.9 255.255.255.252 +48 61 271 04 43 Routing Table no ip redirects What is DMVPN? Learn how your comment data is processed. show crypto engine connection active for phase 1 and phase 2. R1 Hub configuration example: router eigrp 111 network 10.1.1.0 0.0.0.255 network 172.16.1. tunnel protection ipsec profile DMVPN_PROFILE Type:Hub, NHRP Peers:2, # Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb Configure Zero Touch Deployment (ZTD) of VPN Remote Offices/Spokes. 1 10.10.10.5 172.16.1.2 UP 00:15:44 D ip nhrp registration timeout 30 duplex auto 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. DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. 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 tunnel mode gre multipoint Seems we are missing the configuration for Router 1, would you mind uploading it if you still have it documented somewhere? One of the routers has DHCP assigned IP on WAN and the other one has static WAN IP. z o.o. ip nhrp nhs 172.16.1.1 2 192.168.161.50 64 msec 20 msec 80 msec 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 R11 (config-if)#ip nhrp authentication DMVPN1 R11 (config-if)#ip nhrp map multicast dynamic Web. ip nhrp map multicast10.10.10.1 < Send multicast traffic to the Hub only. some time sh dmvpn not accept in router somain whileuse show crypto isakmp sa for phase 1 policy and. ip address 10.149.1.1 255.255.255.0 Yes you are right. BB router has a static route to 192.168.1./24 network, R2 and R3 should learn it without redistribution. EIN: 98-1615498 EIN: 98-1615498 On the DMVPN routers you can configure and place an ACL on the WAN interface to allow only the DMVPN traffic protocols (GRE, IPSEC). crypto ipsec transform-set TS esp-3des esp-md5-hmac DMVPNis one of the most scalable and most efficient VPN types supported by Cisco. no ip redirects duplex auto Although I had EIGRP spoke neighbors. 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. Thanks Edilmar for your comment. NIP 7792433527 Over the years he has acquired several professional certifications such as CCNA, CCNP, CEH, ECSA etc. Next you will need to add IPSEC, this will ensure that traffic is not sent in clear text. 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. Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. speed auto, interface GigabitEthernet0/1 We Provide Technical Tutorials and Configuration Examples about TCP/IP Networks with focus on Cisco Products and Technologies. tunnel protection ipsec profile protect-gre < encrypts the traffic passing through this tunnel using ipsec interface Tunnel0 ip nhrp redirect This enables the hub to inform a spoke of a better path if one exists. Also, you allow me to send you informational and marketing emails from time-to-time. R2 and R3 , should have a default route targetting. crypto isakmp policy 1 To enable dynamic routing i am using EIGRP add the following configuration to each routers except router 1. ! ! UpDn Time > Up or Down Time for a Tunnel, ==========================================================================. N NATed, L Local, X No Socket !hostname Router1!ip cef!interface FastEthernet0/0description to Router2ip address 192.168.2.1 255.255.255.0duplex fullspeed 100! VRF info: (vrf in name/id, vrf out name/id) Phone: +1 302 691 9410 10.10.10.1 10.10.10.9 QM_IDLE 1001 ACTIVE, R1#ping 192.168.161.50 VRF info: (vrf in name/id, vrf out name/id) No, MPLS is not needed for DMVPN. I am still fighting to understand something. ip nhrp map multicast10.10.10.1 < Send multicast traffic to the Hub only. ip nhrp map multicast: here we specify which destinations should receive broadcast or multicast traffic through the tunnel interface. Type escape sequence to abort. Hello, interface GigabitEthernet0/1 Grandmetric LLC ! R1#traceroute 192.168.161.50 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). 2 192.168.161.50 64 msec 20 msec 80 msec 1 10.10.10.5 (peer public IP) 172.16.1.2 (peer tunnel IP ) UP 07:51:19 D 03:47 AM. 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. ip nhrp authentication nhrp1234 NHRP(Next Hop Resolution Protocol) is used to map the private IPs of Tunnel Interfaces with their corresponding WAN Public IPs. # Ent > Number of NHRP entries with same NBMA peer DMVPN Phase 1 Single Hub - EIGRP - Hub example; DMVPN Phase 1 Single Hub - EIGRP - Spoke example; DMVPN Phase 1 Single Hub - IPSec example; . interface Loopback 1 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. Each branch site (Spoke) has a permanent IPSECTunnel with the Central site (Hub). ip mtu 1440 stable for 8-9 weeks and someothers dropping every few weeks I realised 2 days ago that all the EIGRP neighbors dropped the same . 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. ! Make an example where DYNAMIC logic has to be used. ==========================================================================, # Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb no ip redirects ! duplex auto 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). The introduction, EIGRP: 2. z o.o. Normally RIP will work as well. tunnel protection ipsec profile DMVPN_PROFILE DMVPN Phase 3 EIGRP Routing Configuration Tunnel interfaces EIGRP In the first DMVPN lesson we discussed the basics and the different phases. R1#. DMVPN is supported only on Cisco Routers. ip nhrp network-id 1 usually external interfaces for R2,R3,R4 have dynamic IP (from ISP), how this config will be for that situation ? end ! Configure Phase-3 Hierarchical DMVPN with Multi-Subnet Spokes. 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. IPv4 Crypto ISAKMP SA Brookfield Place Office Cisco ASA FirePOWER Services: how to install FMC? ! tunnel mode gre multipoint ! C CTS Capable Type escape sequence to abort. In this tutorial we have used static routing but for larger networks you should enable dynamic routing such as EIGRP. I run a DMVPN solution in Dual hub mode. z o.o. ip nhrp authentication gmlabs 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 2 10.10.10.9 172.16.1.3 UP 09:41:33 D, IPv4 Crypto ISAKMP SA keepalive 5 10, crypto isakmp policy 1 Enter your Email below to Download our Free Cisco Commands Cheat Sheets for Routers, Switches and ASA Firewalls. The above NHRPmappings will be kept on the NHRP Server router (HUB). Brookfield Place Office ip nhrp shortcut 1 10.10.10.9 172.16.1.3 UP 00:25:50 D, R1#show crypto isakmp sa New York, NY 10281 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. 12/31/2019 at 12:24 PM. Finding Feature Information Prerequisites for Dynamic Multipoint VPN (DMVPN) !interface FastEthernet0/1description to Router3ip address 192.168.3.1 255.255.255.0duplex fullspeed 100! DMVPN Hub as the CA Server for the DMVPN Network . < Send multicast traffic to the Hub only. DMVPN stands for Dynamic Multipoint VPN and it is an effective solution for dynamic secure overlay networks. description To LAN interface Tunnel0 network 172.16.1.0 0.0.0.255 Sending 5, 100-byte ICMP Echos to 192.168.161.50, timeout is 2 seconds: DMVPN configuration: Configuration of the first HUB (R11 and R12): Let's start by configuring our first DMVPN HUB. - edited 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. router eigrp 111 ! The HUB central router acts as the DMVPN server and the Spoke routers (in branch offices) act as the DMVPN clients. ul. !interface FastEthernet1/0description to Hubip address 192.168.1.1 255.255.255.0duplex fullspeed 100! network 10.1.0.0 0.0.255.255 Type escape sequence to abort. !crypto ipsec profile protect-gre ! interface Tunnel0 .!!!! tunnel source Loopback0 authentication pre-share info@grandmetric.com, router eigrp 111 New York, NY 10281 Here is the configuration on R11. no ip split-horizon eigrp 111 Brookfield Place Office interface GigabitEthernet0/0 The only problem with a Phase 2 DMVPN is scalability. This configuration is for a Phase 2 DMVPN - which should probably be noted somewhere here (probably in the title). Cisco ASA FirePOWER Services: how to install FMC? The introduction, EIGRP: 2. Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. This document gives information about DMVPN with a configuration example. .!!!! When the stub feature is configured on an EIGRP speaker, it causes EIGRP to only advertise routes of a certain type. The HUB router must have static public IP address on its WAN interface. hash md5 dst src state conn-id status Privacy Policy. ! ! EIN: 98-1615498 I need to connect just 5 sites. +48 61 271 04 43 ! set transform-set TS, ip route 192.168.160.0 255.255.255.0 172.16.1.1 < Route for HUB Sending 5, 100-byte ICMP Echos to 192.168.164.1, timeout is 2 seconds: 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. 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 example, to only advertise routes that are directly connected or only summary routes. I just noticed that the lab has the command ip route wrong, i think that you hace to write the subnetmask no the wildcard. DMVPN is one of the most scalable and most efficient VPN types supported by Cisco. speed auto, interface GigabitEthernet0/1 0.0.0.255. interface Tunnel0 ip address 172.16.1.1 255.255.255. 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) We're preparing to get 2 new Cisco routers for redundancy. mode tunnel ul. Copyright 2022 | Privacy Policy | Terms and Conditions | Hire Me | Contact | Amazon Disclaimer | Delivery Policy. Tracing the route to 192.168.161.50 ip nhrp map multicast 10.149.1.1 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. Your email address will not be published. UpDn Time > Up or Down Time for a Tunnel ip address dhcp 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. Usually there is no need to have a firewall within the DMVPN topology. ! There should be first reachability between all public IP addresses? Type escape sequence to abort. 08-29-2017 Metalowa 5, 60-118 Pozna, Poland dst src state conn-id status Here's the topology we will use: speed auto, interface Tunnel1 tunnel protection ipsec profile protect-gre ! < 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). My current config on the hub and spokes is as follows: HUB If there will be a change of IP on HUB site what you would do with millions of these CPEs deployed? load-interval 30 Here is the topology we shall use: There is one hub router and two spoke routers. POD1_R3#, Grandmetric LLC The hub router requires a static IP configured on the WAN interface facing the internet. crypto ipsec profile protect-gre tunnel key 123 I have fixed the ip route command. < 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. duplex auto. tunnel protection ipsec profile protect-gre mode tunnel ip address 192.168.164.1 255.255.255.0 Tracing the route to 192.168.164.50 Phone: +1 302 691 94 10, GRANDMETRIC Sp. ip nhrp registration timeout 30 # Ent > Number of NHRP entries with same NBMA peer ip mtu 1440 < -Reduce the MTU to allow extra overhead from mGRE and IPSEC ip nhrp authentication gmlabs description TO Internet Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms, Type escape sequence to abort. DMVPN is an overlay hub and spoke technology that allows an enterprise to connect it's offices across an NBMA network. interface Loopback0 I added the route afterwards and by mistake I have put wildcard mask instead of normal subnet mask. 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. ip nhrp nhs 172.16.1.1 mode tunnel network 10.1.2.0 0.0.0.255 network 172.16.1.0 0.0.0.255. interface Tunnel0 keepalive 5 10 As an Amazon Associate I earn from qualifying purchases. Your config is misleading guys here. !end, Excellent work Did the scenario using the eigrp named mode (kept it simple). ip address 10.1.1.1 255.255.255.0 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) 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) 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. 10.10.10.1 10.10.10.9 QM_IDLE 1001 ACTIVE, R1#ping 192.168.161.50 tunnel mode gre multipoint +48 61271 04 43 01-21-2013 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. description to Internet-WAN Tracing the route to 192.168.161.50 Sending 5, 100-byte ICMP Echos to 192.168.164.50, timeout is 2 seconds: tunnel source Loopback0 ip address 192.168.160.1 255.255.255.0 description To: LAN Type escape sequence to abort. ip nhrp registration no-unique > if a NHRP map is done for this IP another one will not be allowed Thus, the Hub router will store all mappings for. For this situation is it required to use dynamic IP routing - for example - EIGRP ? 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. I use EIGRP as a routing protocol between the HUb and Spokes. ! 1 172.16.1.3 56 msec 12 msec 24 msec Imagine to have ISP network where you want to use millions of CPEs where particular traffic has to be GRE encapsulated. Phone: +1 302 691 94 10, GRANDMETRIC Sp. 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. 1 172.16.1.3 56 msec 12 msec 24 msec R1#traceroute 192.168.161.50 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. Metalowa 5, 60-118 Pozna, Poland 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 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 FastEthernet1/1description to Router4ip address 192.168.4.1 255.255.255.0duplex fullspeed 100! ip nhrp map 172.16.1.1 10.149.1.1 ip address 10.10.10.1 255.255.255.252 Metalowa 5, 60-118 Pozna, Poland This means that Spoke sites can communicate between them directly without having to go through the Hub. Type escape sequence to abort. The maximum hold time should not exceed 7 times the EIGRP hello timers, or 35 seconds. ! EIN: 98-1615498 duplex auto ip nhrp map multicast dynamic EIGRP asks DUAL to make routing decisions, but the results are stored in the IP routing table. For better scalability, it is recommended to run a dynamic routing protocols (such as EIGRP) between all the routers. Interface: Tunnel1, IPv4 NHRP Details New York, NY 10281 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. NIP 7792433527 09:11 PM The EIGRP module is also responsible for parsing EIGRP packets and informing DUAL about the new information received. ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. +48 61271 04 43 Thank you so much. 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). It is just another WAN connectivity option. Than suddenly you will end in different configuration rather than this one. Can I run RIP for this Public connectivity and therefore EIGRP for LAN connectivity? network 10.1.3.0 0.0.0.255 description to LAN Each Spoke communicates with the NHRP Server (Hub) and registers its public IP address and its private Tunnel Interface IP to the Hub router. What about if I have just lets say 16 public ip addresses. 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). ip summary-address eigrp 111 10.0.0.0 255.0.0.0 ip mtu 1440 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? Sending 5, 100-byte ICMP Echos to 192.168.161.1, timeout is 2 seconds: ip nhrp network-id 1 set transform-set TS, ! 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 set security-association lifetime seconds 86400 This blog entails my own thoughts and ideas, which may not represent the thoughts of Cisco Systems Inc. !!!!! So curiously, how is this config example working if you have statics on the hub for the NBMA networks of the remote routers? Vendor: Cisco ip nhrp holdtime 60 mGRE tunnel ! Additionally EIGRP shouldn't work as a classful routing protocol. 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 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 10.10.10.9 10.10.10.1 QM_IDLE 1012 ACTIVE, Type escape sequence to abort. This will be stored in the NHRP cache of the spoke router. By submitting this form, you agree that the information you provide will be transferred to Elastic Email for processing in accordance with their It means I have enough addresses to interconnect my sites. ip address 172.16.1.2 255.255.255.0 Terms of Use and tunnel mode gre multipoint < designates the tunnel as a mGRE tunnel R1#ping 192.168.164.50 This time, we are going to look at BGP. ip nhrp authentication nhrp1234 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.. ip address 192.168.161.1 255.255.255.0 crypto ipsec transform-set TS esp-3des esp-md5-hmac NHS Status: E > Expecting Replies, R > Responding, W > Waiting Metalowa 5, 60-118 Pozna, Poland .!!!! Currently, we only have 1 hub for all EIGRP and DMVPN spokes. z o.o. New here? The most common implementations of DMVPN are being used as backup WAN connections across the internet. 10.10.10.1 10.10.10.5 QM_IDLE 1007 ACTIVE Email: info@grandmetric.com, Grandmetric Sp. ip address 172.16.1.2 255.255.255.0 < in same subnet as all the other tunnels no ip redirects tunnel source Loopback0 interface GigabitEthernet0/0 ip nhrp network-id 1 < Network identification that has to be the same on all the routers FlexVPN Spoke in Redundant Hub Design with FlexVPN Client Block Configuration Example 16/Sep/2013. encr 3des 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. 10.10.10.1 10.10.10.5 QM_IDLE 1007 ACTIVE .!!!! 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. 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. end 1 172.16.1.2 56 msec 20 msec 28 msec no ip redirects R3 Spoke configuration: router eigrp 111 ! 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. Phone: +1 302 691 9410 crypto ipsec profile protect-gre > profile added to the mGRE tunnel for encryption To understand what these commands do, isn't so easy. One of the best practices when deploying EIGRP in a DMVPN or otherwise is to make use of the stub feature. Some links below may open a new browser window to display the document you selected. interface Tunnel1 description WAN to Internet tunnel source GigabitEthernet0/0 You can use DMVPN over the internet or over MPLS. some time sh dmvpn not accept in router somain whileuse, Customers Also Viewed These Support Documents, Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP). 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. set transform-set TS, ip route 192.168.160.0 255.255.255.0 172.16.1.1 < Route for HUB DMVPN Phase 3 Single Hub - EIGRP - Hub example. Hi Harriss, thanks for sharing, this is the most complete lab about DMVPN Ive founded it. IPv4 Crypto ISAKMP SA 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 set security-association lifetime seconds 86400 Configure IPSEC on HUB network 172.16.1.0 0.0.0.255 Tunnel source Required fields are marked *. 10.10.10.5 10.10.10.1 QM_IDLE 1011 ACTIVE > IPsec connectivity between routers This configuration will be added to each router except router 1. tunnel mode gre multipoint This blog is NOT affiliated or endorsed by Cisco Systems Inc. All product names, logos and artwork are copyrights/trademarks of their respective owners. ip nhrp holdtime 60 Or not. I know that gre is pain most of the times but we have to live with that. T1 Route Installed, T2 Nexthop-override 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 :). R11 (config)#interface Tunnel1 R11 (config-if)#ip add 10.10.100.11 255.255.255. ip address 172.16.1.1 255.255.255.0 ! ! authentication pre-share load-interval 30 Legend: Attrb > S Static, D Dynamic, I Incomplete All the routers involved in this tutorial are CISCO1921/K9. load-interval 30 ip nhrp nhs 172.16.1.1 > configures NHRP client with the IP address of its NHRP server tunnel source GigabitEthernet0/0 < source is WAN interface In short, DMVPN is combination of the following technologies: Once you have physical connectivity you can add the DMVPN configuration. ip nhrp shortcut info@grandmetric.com, Technology: WAN encr 3des ip address 172.16.1.3 255.255.255.0 < in same subnet as all the other tunnels 200 Vesey Street In our first DMVPN lesson we explained the basics and the differences of the three phases. group 2 Is this layout supporting a NAT scenario? ip address 172.16.1.1 255.255.255.0 < Select a private IP subnet for the tunnels Brookfield Place Office We use Elastic Email as our marketing automation service. 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. In this lesson we'll take a look how we can configure EIGRP on a DMVPN phase 3 network. 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. The Spoke-to-Spoke tunnels are established, All tunnels are using Multipoint GREwith IPSEC. Platform: ISR 1800, 2800, 3800, 1900, 2900, 3900, Platforms: 4300, 4400, R1: no ip redirects Perez, hash md5 ip nhrp map multicast 10.149.1.1 200 Vesey Street tunnel mode gre multipoint ! Sending 5, 100-byte ICMP Echos to 192.168.161.50, timeout is 2 seconds: NHS Status: E > Expecting Replies, R > Responding, W > Waiting ip nhrp registration no-unique > if a NHRP map is done for this IP another one will not be allowed As always great stuff, easy to follow and well explained. ! ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. New York, NY 10281 NIP 7792433527 R1#, I just noticed that the command to introR1#show crypto isakmp sa tunnel key 123, Grandmetric LLC Area: DMVPN ip nhrp network-id 111 Hub will receive all multicast traffic (e.g routing protocol updates) and then send out updates to all the Spoke routers. 200 Vesey Street Use the spesific wildcard masks for R2 and R3. ip nhrp map 172.16.1.1 10.149.1.1 ip nhrp authentication gmlabs Software: 12.X , 15.X ISR Configure the network above with EIGRP using Autonomous system number 90. Grandmetric LLC ip route 192.168.161.0 255.255.255.0 172.16.1.3 < Route for other Spoke site, interface GigabitEthernet0/0 ! ul. ip nhrp map multicastdynamic < Enables forwarding of multicast traffic across the tunnel. ip nhrp nhs 172.16.1.1 > configures NHRP client with the IP address of its NHRP server I want to prepare for a new deployment for my DMVPN and EIGRP hub. To make this a Phase 3 DMVPN is quite easy. Is it possible to use this configuration with 1 central Hub router with all four spokes connecting to the Hub? Why you are calling this DMVPN when you are using static routing at the first instance. ip address 172.16.1.3 255.255.255.0 ip nhrp authentication nhrp1234 < authentication used for updates between 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 . 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