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Found 21 results

  1. The Implementing Secure Solutions with Virtual Private Networks (SVPN) v1.0 course teaches you how to implement, configure, monitor, and support enterprise Virtual Private Network (VPN) solutions. Through a combination of lessons and hands-on experiences you will acquire the knowledge and skills to deploy and troubleshoot traditional Internet Protocol Security (IPsec), Dynamic Multipoint Virtual Private Network (DMVPN), FlexVPN, and remote access VPN to create secure and encrypted data, remote accessibility, and increased privacy. [Hidden Content] Import then Download [hide][Hidden Content]] Stay Home.. Stay Safe
  2. Hello Guys, I would like to discuss about advantages and disadvantages of APIC_EM, specially with IWAN_APP. I know current situation is not stable one, we had some experience with that in a working environment but lots of bugs and limitations. for example it does not support BGP, Duplicate IP in VRFs and many others. Plz feel free to discuss about this topic and share your experience to find out what is the best solution for SD_WAN. Here is come comments with reddit: CISCO website: [Hidden Content] Thanks,
  3. Hi all, I've built DMVPN with OpenNHRP using LinuxBox (CentOS). It's free and work compatible with Cisco IOS Devices and other LinuxBox running OpenNHRP. In my lab, i'm using 3 VM running CentOS 6.4 HUB: CentOS 6.4 (x86_64) + OpenNHRP + IPSEC-TOOLS SPOKE1: CentOS 6.4 (x86_64) + OpenNHRP + IPSEC-TOOLS SPOKE2: CentOS 6.4 (x86_64) + OpenNHRP + IPSEC-TOOLS All steps are following: Setup LinuxBox (CentOS) Compile Kernel with ARPD Enable (if not, the tunnel GRE will shutdown after 30-45 seconds) Compile OpenNHRP for HUB and SPOKE Configure OpenNHRP (without IPSec) Test Ping Spoke to Hub Test Ping Spoke to Spoke (without through HUB) Test ping from Spoke's loopback to Hub 's loopback Test ping from Spoke's loopback to Spoke's loopback [*]Compile and Configure IPSEC-TOOLS for encrypt --> not test P/S: open text file with Notepadd++ or SublimeText for easy reading DMVPN with Linux CentOS.txt
  4. Hi all, In DMVPN ticket do we need to add these two command in addition of ip nhrp redirect on R15 no ip split-horizon eigrp 200 no ip next-hop eigrp 200 What I think if we use DMVPN phase 3 i.e ip nhrp redirect on R15 and ip nhrp shortcut on Spokes then traffic will not transit via HUB R15, It will go direct via Spoke. then we do not need above two commands with DMVPN Phase3. Any Expert Comments are appreciated.!!!
  5. mdual

    H2 DMVPN phase 3

    Hi guys, Labbing the H2 and wanted to share something and find out on your thoughts. The requirement says there should be phase 3 DMVPN for the Brunch net routers R19,R20,R21. the config for the spokes are identical - so I am saring R19, and it looks like this : ! interface Tunnel0 ip address 10.100.0.19 255.255.255.0 no ip redirects ip nhrp authentication 65002key ip nhrp map 10.100.0.1 192.0.2.2 ip nhrp map multicast 192.0.2.2 ip nhrp network-id 51 ip nhrp holdtime 300 ip nhrp nhs 10.100.0.1 ip nhrp shortcut ip ospf network point-to-multipoint delay 100 tunnel source Dialer1 tunnel mode gre multipoint tunnel key 65002 tunnel vrf LOCALSP end for R17, which is NHS : ! interface Tunnel0 ip address 10.100.0.1 255.255.255.0 no ip redirects ip nhrp authentication 65002key ip nhrp map multicast dynamic ip nhrp network-id 51 ip nhrp holdtime 300 ip nhrp redirect ip ospf network point-to-multipoint ip ospf 65002 area 51 delay 100 tunnel source Ethernet0/1 tunnel mode gre multipoint tunnel key 65002 end So ! All works as it should and first trace goes over the hub, then rest go to the spoke directly : first : R19#trace 10.16.2.1 so e 0/1 nu pr 1 Type escape sequence to abort. Tracing the route to 10.16.2.1 VRF info: (vrf in name/id, vrf out name/id) 1 10.100.0.1 1 msec 2 10.100.0.20 6 msec next: R19#trace 10.16.2.1 so e 0/1 nu pr 1 Type escape sequence to abort. Tracing the route to 10.16.2.1 VRF info: (vrf in name/id, vrf out name/id) 1 10.100.0.20 6 msec Now the tricky one : the routing table doesn't have nhrp route installed, it got % - "next hop override" : R19#sh ip ro Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP a - application route + - replicated route, % - next hop override Gateway of last resort is 10.100.0.1 to network 0.0.0.0 O*IA 0.0.0.0/0 [110/1001] via 10.100.0.1, 00:01:29, Tunnel0 10.0.0.0/8 is variably subnetted, 12 subnets, 2 masks C 10.16.1.0/24 is directly connected, Ethernet0/1 L 10.16.1.1/32 is directly connected, Ethernet0/1 O % 10.16.2.0/24 [110/2010] via 10.100.0.1, 00:01:29, Tunnel0 O 10.16.3.0/24 [110/2010] via 10.100.0.1, 00:01:29, Tunnel0 C 10.100.0.0/24 is directly connected, Tunnel0 O 10.100.0.1/32 [110/1000] via 10.100.0.1, 00:01:29, Tunnel0 L 10.100.0.19/32 is directly connected, Tunnel0 O % 10.100.0.20/32 [110/2000] via 10.100.0.1, 00:01:29, Tunnel0 O 10.100.0.21/32 [110/2000] via 10.100.0.1, 00:01:29, Tunnel0 C 10.255.1.19/32 is directly connected, Loopback0 O 10.255.1.20/32 [110/2001] via 10.100.0.1, 00:01:29, Tunnel0 O 10.255.1.21/32 [110/2001] via 10.100.0.1, 00:01:29, Tunnel0 R19# The reason we can se from debug : R19# *Apr 20 15:30:11.199: NHRP: Attempting to create instance PDB for (0x0) *Apr 20 15:30:11.211: NHRP: Adding route entry for 10.16.2.0/24 (Tunnel0) to RIB *Apr 20 15:30:11.211: NHRP: Route addition failed (admin-distance) *Apr 20 15:30:11.211: NHRP: nexthop-override added to RIB *Apr 20 15:30:11.211: NHRP: Route watch started for 10.16.2.0/24 *Apr 20 15:30:11.211: NHRP: Adding route entry for 10.100.0.20/32 (Tunnel0) to RIB *Apr 20 15:30:11.211: NHRP: Route addition failed (admin-distance) *Apr 20 15:30:11.211: NHRP: nexthop-override added to RIB *Apr 20 15:30:11.211: NHRP: Route watch started for 10.100.0.20/32 *Apr 20 15:30:11.215: NHRP: R19#Received route watch notification for 10.16.2.0/24 *Apr 20 15:30:11.215: NHRP: Covering prefix is 10.16.2.0/24 *Apr 20 15:30:11.215: NHRP: Received route watch notification for 10.100.0.20/32 *Apr 20 15:30:11.215: NHRP: Covering prefix is 10.100.0.20/32 R19# And finally the question : What your thoughts guys ? "by the nature of it works" it definitely has all components of Phase 3 in place. Except of the fact that no nhrp routes are actually in the routing tables. Would it be considered by cisco as valid phase 3 ? As usual - any ideas are highly appreciated.
  6. Did anyone encounter these logs on R17,R18: *May 9 17:31:15.553: %ADJ-5-PARENT: Midchain parent maintenance for IP midchain out of Tunnel0, addr 215.0.0.15 - looped chain attempting to stack R17# Problem is that to establish tunnel, R17 need to reach NBMA IP of R15. Ideally R17 should go default route 0.0.0.0 provided by R12. But, see below: R17#show ip route 145.67.89.10 Routing entry for 145.67.89.8/30 Known via "eigrp 200", distance 170, metric 26905600, type external Redistributing via eigrp 200 Last update from 215.0.0.15 on Tunnel0, 00:00:01 ago Routing Descriptor Blocks: * 215.0.0.15, from 215.0.0.15, 00:00:01 ago, via Tunnel0 Route metric is 26905600, traffic share count is 1 Total delay is 51000 microseconds, minimum bandwidth is 100 Kbit Reliability 255/255, minimum MTU 1476 bytes Loading 15/255, Hops 1 To reach 145.67.89.10 of R15 and to establish tunnel, R17 is using its route for 145.67.89.10 learnt over the same tunnel and hence this error log. In order to stop R15 from advertising its NBMA .10 IP, I removed "red connected" and tunnel came up. After this we see no route for 145.67.89.10 and it goes out via 0.0.0.0 R17#show ip route 145.67.89.10 % Subnet not in table R17#show ip route 0.0.0.0 Routing entry for 0.0.0.0/0, supernet Known via "static", distance 1, metric 0, candidate default path Routing Descriptor Blocks: * 145.67.89.21 Route metric is 0, traffic share count is 1 Not sure if there is any other way of doing it or not ?
  7. This conifiguration should resolve connectivity for the variation having R17's E0/1 (To Corp) ,Lo0, and Tunnel in the VRF, but not E0/0 (To ISP). interface Ethernet0/1 vrf forwarding CORP ip address 10.2.0.38 255.255.255.252 ip nat inside ! interface Ethernet0/0 ip address 192.0.2.2 255.255.255.0 ip nat outside ! interface Loopback0 vrf forwarding CORP ip address 10.255.1.17 255.255.255.255 ip nat inside ip virtual-reassembly in ! interface Tunnel0 vrf forwarding CORP ip address 10.100.0.1 255.255.255.0 no ip redirects ip nhrp map multicast dynamic ip nhrp redirect ip ospf network point-to-multipoint ip ospf hello-interval 10 ip ospf 1 area 51 no-summary tunnel source Ethernet0/0 tunnel mode gre multipoint ! ip nat inside source list all interface Ethernet0/0 vrf CORP overload ! ip route vrf CORP 0.0.0.0 0.0.0.0 192.0.2.1 global The ip ospf 1 area 51 no-summary will cause problems if you the Spokes have their WAN and LAN interfaces in the same route table. It will send a default route that conflicts with the IPCP learned default. You can solve this by using a specific route to the NMBA interface 0/0 of R17 instead of learning a default from IPCP, or having the dialer in a separate route table from the Tunnel.
  8. Dear CCIE experts, Please solve the below challenge: [Hidden Content] How to make DMVPN work when vrf is applied? Warm wishes, Lakshan Note: Let me know if you cannot solve it
  9. Whats up guys. Today I was messing up around with DMVPN and I got a weird behavior. The topology is the INE vol1, Basically I was using only the following Routers: R1 (Spoke1) R2 (Spoke2) R5 (Hub) I was trying to create a static GRE IPv6 over v4 between two DMVPN spokes (R1 and R2), This tunnel use IPv4 source as their respective loopbacks, and it's got a new IPv6 address network, which is ipv6 address 2001:155:1:12::X/64. The tunnel itself work, I can ping the IPv6 address at each end of those spokes. But, as soon as I enable Ipsec profile protection on the Hub and on the Spokes, I can't ping between their IPv6 addresses anymore, but, if I source traffic from their loopbacks with their remote loopbacks as destination it works, so, clearly the problem is with IPv6 as being the payload (I mean, the tunnel1 still working between the "IPv4 carrier address"). First, I thought I might be a MTU issue which ultimately could lead a bug at IOU, but, I set ip mtu 1400 on every tunnel and the stuff didn't work. Do you guys have any idea what could be the cause of this issue? Here it goes the config (I attached INE's vol 1 topology as well, if you want to know where are R1, R2 and R5 located at): --------------------------------------------------------------------- IPSEC CONFIG (R5, R2, R1): crypto isakmp policy 10 encr aes hash md5 authentication pre-share group 5 crypto isakmp key cisco address 0.0.0.0 ! ! crypto ipsec transform-set ESP_AES_SHA esp-aes esp-sha-hmac mode transport ! crypto ipsec profile DMVPN_PROFILE set transform-set ESP_AES_SHA ! --------------------------------------------------------------------- !R5 router eigrp ccie ! address-family ipv4 unicast autonomous-system 100 ! af-interface Tunnel0 summary-address 0.0.0.0 0.0.0.0 exit-af-interface ! topology base exit-af-topology network 150.1.0.0 network 155.1.0.0 0.0.0.255 exit-address-family ! interface Tunnel0 ip address 155.1.0.5 255.255.255.0 no ip redirects ip mtu 1400 ip nhrp map multicast dynamic ip nhrp network-id 5 ip nhrp redirect no ip route-cache tunnel source Ethernet0/1.100 tunnel mode gre multipoint tunnel key 5 tunnel protection ipsec profile DMVPN_PROFILE end --------------------------------------------------------------------- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx --------------------------------------------------------------------- !R2 router eigrp ccie ! address-family ipv4 unicast autonomous-system 100 ! topology base exit-af-topology network 150.1.0.0 network 155.1.0.0 0.0.0.255 exit-address-family ! interface Tunnel0 ip address 155.1.0.2 255.255.255.0 no ip redirects ip mtu 1400 ip nhrp map 155.1.0.5 169.254.100.5 ip nhrp map multicast 169.254.100.5 ip nhrp network-id 5 ip nhrp nhs 155.1.0.5 ip nhrp shortcut tunnel source Ethernet0/1.100 tunnel mode gre multipoint tunnel key 5 tunnel protection ipsec profile DMVPN_PROFILE end ! interface Tunnel1 ip address 155.1.12.2 255.255.255.0 ipv6 address 2001:155:1:12::2/64 tunnel source Loopback0 tunnel destination 150.1.1.1 end --------------------------------------------------------------------- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx --------------------------------------------------------------------- !R1 router eigrp ccie ! address-family ipv4 unicast autonomous-system 100 ! topology base exit-af-topology network 150.1.0.0 network 155.1.0.0 0.0.0.255 exit-address-family ! interface Tunnel0 ip address 155.1.0.1 255.255.255.0 no ip redirects ip mtu 1400 ip nhrp map 155.1.0.5 169.254.100.5 ip nhrp map multicast 169.254.100.5 ip nhrp network-id 5 ip nhrp nhs 155.1.0.5 ip nhrp shortcut tunnel source Ethernet0/1.100 tunnel mode gre multipoint tunnel key 5 tunnel protection ipsec profile DMVPN_PROFILE end ! interface Tunnel1 ip address 155.1.12.1 255.255.255.0 ipv6 address 2001:155:1:12::1/64 tunnel source Loopback0 tunnel destination 150.1.2.2 end
  10. Here is the torrent link for INE DMVPN videos INE-Introduction-to-DMVPN-for-CCIE-R-S-v5(***.net).torrent
  11. Hi Guys Here it is for Rob Riker's BGP/Convergence Optimization/DMVPN -- Compressed for you. I will share the rest soon. [hide][Hidden Content]]
  12. Hello, Did anyone manage to solve MPLS ticket? Trace should go from Server 1 (10.1.201.X) to 10.5.100.254 via MPLS cloud. In case of MPLS failure, traceroute should go through DMVPN. I do understand that there are faults on R1/R5 (ospf and mpls configuration) + R3 (vrf configuration) but i see here on forum that the solution to the loop problem is to erase distanceospf external 19 in ospf routing process or to put the value higher than 200 (iBGP AD). I do not understand what matter does it have since the OSPF in DMVPN is in area 0 and not in some other area - route from DC to 10.5.100.254 is not IA since we have all networks in single ospf area 0. Please be so kind and comment.
  13. vishu2811

    ticket 9

    In this tkt( DMVPN R7-R24 Tunnel ) i had problem of tunnel. it gets flapped so my ospf adj.this occurs when my r7 to r8 ibgp neighborship broken. but if i correct this neighborship it works fine. there is mutual redistribution on r7 and r8 bgp to ospf and ospf to bgp. can any body explain why this happens
  14. Hi guys, I have a bit of trouble to get my tunnel interface up and running in section 2.4. Can someone please take a look at my config and check what I'm doing wrong. Actually I know what could be the issue, but I don't really see how to resolve it ...tunnel0 being in vrf, but eigrp process not running in vrf... how to advertise... R17: ############################# R17#sh ip int brie Interface IP-Address OK? Method Status Protocol Ethernet0/0 203.3.17.2 YES manual up up Ethernet0/1 123.20.1.18 YES NVRAM up up Ethernet0/2 123.20.1.10 YES NVRAM up up Loopback0 123.17.17.17 YES NVRAM up up Tunnel0 123.20.1.25 YES manual up down R17#sh run ... ! interface Ethernet0/0 ip vrf forwarding LOCALSP ip address 203.3.17.2 255.255.255.252 ! interface Tunnel0 ip vrf forwarding LOCALSP ip address 123.20.1.25 255.255.255.248 tunnel source Ethernet0/0 ! router eigrp CCIE ! address-family ipv4 unicast autonomous-system 45679 ! af-interface Ethernet0/1 authentication mode hmac-sha-256 cisco exit-af-interface ! af-interface Ethernet0/2 authentication mode hmac-sha-256 cisco exit-af-interface ! topology base exit-af-topology network 123.17.17.17 0.0.0.0 network 123.20.1.10 0.0.0.0 network 123.20.1.18 0.0.0.0 network 123.20.1.25 0.0.0.0 eigrp router-id 123.17.17.17 exit-address-family end ############################# R18: ############################# R18#sh ip int brie Interface IP-Address OK? Method Status Protocol Ethernet0/0 10.1.18.1 YES TFTP up up Serial1/0 203.3.18.2 YES manual up up Loopback0 123.18.18.18 YES TFTP up up Tunnel0 123.20.1.26 YES manual up up R18#sh run ... interface Serial1/0 ip vrf forwarding LOCALSP ip address 203.3.18.2 255.255.255.252 encapsulation ppp no peer neighbor-route ppp chap hostname ACME-R18 ppp chap password 0 CCIE serial restart-delay 0 ! interface Tunnel0 ip vrf forwarding LOCALSP ip address 123.20.1.26 255.255.255.248 no ip redirects tunnel source Serial1/0 tunnel mode gre multipoint ! router eigrp CCIE ! address-family ipv4 unicast autonomous-system 45679 ! topology base exit-af-topology network 10.1.18.1 0.0.0.0 network 123.18.18.18 0.0.0.0 network 123.20.1.26 0.0.0.0 eigrp router-id 123.18.18.18 eigrp stub connected exit-address-family #############################
  15. Hi All , There is a ticket in the TS section where we are asked to accomplish the following - The user behind R15 ( i.e. PC103 ) should be able to reach the users behind R17,R18 & R19 via the DMVPN tunnel . Related topology is attached herewith the post . R15 is the HUB while R17,R18 and R19 are spokes . The question is - Which EIGRP Process are the Spokes running ? ? ? AS145 or AS200 ? So , we will have to run EIGRP on the tunnel accordingly !
  16. Hi All, I am facing a problem where tunnel not coming up with tunnel protection along with tunnel vrf. without "tunnel protection" command the tunnel is getting up and eigrp neighborship is established. I am not sure if any command is missing. Below is the Configuration R17 crypto isakmp policy 10 encr aes authentication pre-share group 2 crypto isakmp key CCIE address 0.0.0.0 ! ! crypto ipsec transform-set CCIEXFORM esp-aes mode transport ! crypto ipsec profile DMVPNPROFILE set transform-set CCIEXFORM interface Tunnel0 bandwidth 1000 ip address 123.20.1.25 255.255.255.248 no ip redirects ip mtu 1400 no ip next-hop-self eigrp 45678 ip nhrp authentication 45678 ip nhrp map multicast dynamic ip nhrp network-id 45678 ip nhrp holdtime 300 ip nhrp redirect ip tcp adjust-mss 1380 delay 1000 tunnel source Ethernet0/0 tunnel mode gre multipoint tunnel vrf LOCALSP tunnel protection ipsec profile DMVPNPROFILE R18 crypto isakmp policy 10 encr aes authentication pre-share group 2 crypto isakmp key CCIE address 0.0.0.0 ! ! crypto ipsec transform-set CCIEXFORM esp-aes mode transport ! crypto ipsec profile DMVPNPROFILE set transform-set CCIEXFORM interface Tunnel0 bandwidth 1000 ip address 123.20.1.26 255.255.255.248 no ip redirects ip mtu 1400 ip nhrp authentication 45678 ip nhrp map multicast 203.3.17.2 ip nhrp map 123.20.1.25 203.3.17.2 ip nhrp network-id 45678 ip nhrp holdtime 300 ip nhrp nhs 123.20.1.25 ip nhrp shortcut ip tcp adjust-mss 1380 delay 1000 tunnel source Serial1/0 tunnel mode gre multipoint tunnel vrf LOCALSP tunnel protection ipsec profile DMVPNPROFILE
  17. Kahindi

    DIAG - DMVPN

    Hi guys, In my lab, the diag-dmvpn question had options to increase or decrease the subnet mask on some interfaces. It seemed like most of the options to choose from had these options. Does anyone have any information on this diag question, or were these options just here to throw me off? Also, I've heard people say they chose to exclude the tunnel interface from eigrp. Why? We choose to exclude the physical interface from the IGP, not the tunnel interface. My question confused me because the "excluded int xx" options didn't make sense. So I thought I had to increase/decrease subnet masks. But I couldn't find anything wrong with the masks. Does anyone have any insight to this? thanks, Kahindi
  18. The recording of last week’s seminar on Introduction to DMVPN for CCIE R&S v5 Candidates is now available to view here. This is the first of many new free seminars on new topics that have been added to the CCIE R&S version 5 blueprint. New upcoming sessions will include IPv6 First Hop Security, IPsec LAN-to-LAN tunnels, GET VPN, IGP Convergence & Scalability, and BGP Convergence & Scalability, just to name a few. Feel free to submit requests for additional topics in the comments below. [Hidden Content]
  19. What resources (books, CBTs) do I need to have in order to learn the following topics for the CCIE lab ? GRE mGRE DMVPN NHRP Thank you very much in advance.
  20. Guys, I have created a WebIOU Import for the CCIE Version 5 config lab topology that was presented during Cisco Live. If you have not seen it you can find it here. [Hidden Content] This is for guys already familiar with WebIOU and that are either studying for V5 or just want some practice with DMVPN and MPLS. Its a work in progress. Let me know if there are any issues. I will also work on final configs based on the example requirements. I think we can have a thread to discuss the technical aspects in the main forum. I have reverse engineered the initials from this and now it is ready for the routing and VPN configuration. Thanks to UD for creating the original VM image and Andrea Dainese for the WebIOU, Here is the file [hide][Hidden Content]] Have fun.
  21. Hi all , In the attachement is a simple tutorial for DMVPN for Hub and Spoke . I found it usefull , felt it would be beneficial for others too. CONFIGURING CISCO DYNAMIC MULTIPOINT VPN.pdf
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