{"id":925,"date":"2018-02-20T23:17:51","date_gmt":"2018-02-20T22:17:51","guid":{"rendered":"http:\/\/www.quisted.net\/?p=925"},"modified":"2018-02-20T23:17:51","modified_gmt":"2018-02-20T22:17:51","slug":"lab-iii-dmvpn","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/02\/20\/lab-iii-dmvpn\/","title":{"rendered":"LAB III ( DMVPN, MGRE, NHRP, EIGRP)"},"content":{"rendered":"

\"\"<\/a><\/p>\n

The Next Hop Resolution Protocol (NHRP) is an Address Resolution Protocol (ARP)-like protocol that dynamically maps a Non-Broadcast Multi-Access (NBMA) network. With NHRP, systems attached to an NBMA network can dynamically learn the NBMA (physical) address of the other systems that are part of that network, allowing these systems to directly communicate.<\/em><\/p>\n

NHRP is a client and server protocol where the hub is the Next Hop Server (NHS) and the spokes are the Next Hop Clients (NHCs). The hub maintains an NHRP database of the public interface addresses of each spoke. Each spoke registers its real address when it boots and queries the NHRP database for real addresses of the destination spokes to build direct tunnels.<\/em><\/p>\n

https:\/\/www.cisco.com\/c\/en\/us\/td\/docs\/ios-xml\/ios\/ipaddr_nhrp\/configuration\/xe-16\/nhrp-xe-16-book\/config-nhrp.html<\/a><\/p>\n<\/section>\n

HUB (R1 <\/em>):<\/strong><\/span><\/p>\n

R1: \ninterface FastEthernet0\/0\n ip address 192.168.1.100 255.255.255.0\n duplex full\n\ninterface Tunnel0\n ip address 10.1.1.1 255.255.255.0  #TUNNEL CONFIG<\/strong><\/span>\n no ip redirects\n ip mtu 1416\n ip hold-time eigrp 1 35         #EIGRP CONFIG<\/strong><\/span>\n no ip next-hop-self eigrp 1     #EIGRP CONFIG<\/strong><\/span>\n no ip split-horizon eigrp 1     #EIGRP CONFIG<\/strong><\/span>\n ip nhrp map multicast dynamic   #NHRP CONFIG<\/span><\/strong> \n ip nhrp network-id 1            #NHRP CONFIG<\/span><\/strong> \n tunnel source 192.168.1.100     #TUNNEL CONFIG<\/strong><\/span>\n tunnel mode gre multipoint      #TUNNEL CONFIG<\/strong><\/span>\n!\nrouter eigrp 1\n network 10.0.0.0\n network 172.16.0.0\n network 192.168.0.0\n!\nip route 0.0.0.0 0.0.0.0 192.168.1.1  #ROUTING TO R2-INTERNET<\/span>\n<\/strong><\/pre>\n

\nSPOKES (R3, R4, R5 <\/em>)<\/strong><\/span><\/p>\n
interface FastEthernet0\/0 \n ip address 192.168.11.2 255.255.255.0 \n duplex full \n!\ninterface Tunnel0\n ip address 10.1.1.2 255.255.255.0     #TUNNEL CONFIG<\/strong><\/span>\n no ip redirects\n ip mtu 1416\n ip hold-time eigrp 1 35               #EIGRP CONFIG<\/strong><\/span> \n no ip next-hop-self eigrp 1           #EIGRP CONFIG<\/strong><\/span>\n no ip split-horizon eigrp 1           #EIGRP CONFIG<\/strong><\/span> \n ip nhrp map 10.1.1.1 192.168.1.100    #NHRP CONFIG<\/strong><\/span>\n ip nhrp map multicast 192.168.1.100   #NHRP CONFIG<\/strong><\/span> \n ip nhrp network-id 1                  #NHRP CONFIG<\/strong><\/span>   \n ip nhrp nhs 10.1.1.1                  #NHRP CONFIG<\/strong><\/span> \n tunnel source 192.168.11.2            #TUNNEL CONFIG<\/span><\/strong>\n tunnel mode gre multipoint            #TUNNEL CONFIG<\/strong><\/span>\n!\n\nrouter eigrp 1\n network 10.0.0.0\n network 172.16.0.0\n network 192.168.0.0\n!\nip route 0.0.0.0 0.0.0.0 192.168.11.1   #ROUTING TO R2-INTERNET<\/strong>\n<\/span><\/pre>\n
 <\/p>\n
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 <\/p>\n
R1#sh ip route\nCodes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP\n       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area\n       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2\n       E1 - OSPF external type 1, E2 - OSPF external type 2\n       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2\n       ia - IS-IS inter area, * - candidate default, U - per-user static route\n       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP\n       + - replicated route, % - next hop override\n\nGateway of last resort is 192.168.1.1 to network 0.0.0.0\n\nS*    0.0.0.0\/0 [1\/0] via 192.168.1.1\n      10.0.0.0\/8 is variably subnetted, 2 subnets, 2 masks\nC        10.1.1.0\/24 is directly connected, Tunnel0\nL        10.1.1.1\/32 is directly connected, Tunnel0\n      172.16.0.0\/24 is subnetted, 3 subnets\nD        172.16.11.0 [90\/27008000] via 10.1.1.2, 00:11:07, Tunnel0\nD        172.16.12.0 [90\/27008000] via 10.1.1.3, 00:11:07, Tunnel0\nD        172.16.13.0 [90\/27008000] via 10.1.1.4, 00:11:07, Tunnel0<\/span><\/strong>\n      192.168.1.0\/24 is variably subnetted, 2 subnets, 2 masks\nC        192.168.1.0\/24 is directly connected, FastEthernet0\/0\nL        192.168.1.100\/32 is directly connected, FastEthernet0\/0\n<\/pre>\n
HUB DMVPN<\/strong><\/span><\/p>\n
R1#sh dmvpn\nLegend: Attrb --> S - Static, D - Dynamic, I - Incomplete\n        N - NATed, L - Local, X - No Socket\n        # Ent --> Number of NHRP entries with same NBMA peer\n        NHS Status: E --> Expecting Replies, R --> Responding, W --> Waiting\n        UpDn Time --> Up or Down Time for a Tunnel\n==========================================================================\n\nInterface: Tunnel0, IPv4 NHRP Details\nType:Hub, NHRP Peers:3,\n\n # Ent  Peer NBMA Addr Peer Tunnel Add State  UpDn Tm Attrb\n ----- --------------- --------------- ----- -------- -----\n     1 192.168.11.2           10.1.1.2    UP 00:22:30     D\n     1 192.168.12.2           10.1.1.3    UP 00:21:40     D\n     1 192.168.13.2           10.1.1.4    UP 00:21:25     D\n<\/span><\/strong><\/pre>\n
DMVPN and Routing via EIGRP<\/strong><\/span><\/p>\n
R3#sh dmvpn\nLegend: Attrb --> S - Static, D - Dynamic, I - Incomplete\n        N - NATed, L - Local, X - No Socket\n        # Ent --> Number of NHRP entries with same NBMA peer\n        NHS Status: E --> Expecting Replies, R --> Responding, W --> Waiting\n        UpDn Time --> Up or Down Time for a Tunnel\n==========================================================================\n\nInterface: Tunnel0, IPv4 NHRP Details\nType:Spoke, NHRP Peers:2,\n\n # Ent  Peer NBMA Addr Peer Tunnel Add State  UpDn Tm Attrb\n ----- --------------- --------------- ----- -------- -----\n     1 192.168.1.100          10.1.1.1    UP 00:22:43     S\n     1 192.168.12.2           10.1.1.3    UP 00:21:29     D<\/span><\/strong>\n\nR3#ping 172.16.13.1\nType escape sequence to abort.\nSending 5, 100-byte ICMP Echos to 172.16.13.1, timeout is 2 seconds:\n!!!!!\nSuccess rate is 100 percent (5\/5), round-trip min\/avg\/max = 20\/50\/144 ms\nR3#ping 172.16.12.1\nType escape sequence to abort.\nSending 5, 100-byte ICMP Echos to 172.16.12.1, timeout is 2 seconds:\n!!!!!\nSuccess rate is 100 percent (5\/5), round-trip min\/avg\/max = 20\/30\/36 ms\n<\/pre>\n
\"\"<\/a><\/p>\n
Purge from R3:<\/strong><\/span><\/p>\n
\"\"<\/a><\/p>\n
Purge reply:<\/span>
\n<\/strong><\/p>\n
\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
The Next Hop Resolution Protocol (NHRP) is an Address Resolution Protocol (ARP)-like protocol that dynamically maps a Non-Broadcast Multi-Access (NBMA) network. With NHRP, systems attached to an NBMA network can dynamically learn the NBMA (physical) address of the other systems that are part of that network, allowing these systems to directly communicate. NHRP is a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-925","post","type-post","status-publish","format-standard","hentry","category-labs"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/925","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/comments?post=925"}],"version-history":[{"count":0,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/925\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}