11-05-2022 11:43 AM
Hello guys I am having a problem right now,
Right now I am trying to configure a DMVPN between 3 devices in GNS3. The DMVPN works(they can all ping each other) but the EIGRP packets don't get redirected.
RA - Configuration
--------------------------------
int lo0
ip add 172.1.0.1 255.255.255.0
int tun0
no shut
ip add 192.168.0.1 255.255.255.0
tunnel source g0/0
tunnel mode gre multipoint
tunnel key 1
ip nhrp authentication cisco123
ip nhrp network-id 1
ip nhrp map multicast dynamic
ip nhrp redirect
router eigrp 100
network 172.1.0.0 0.0.0.255
network 192.168.0.0 0.0.0.255
RB - Configuration
--------------------------------
int lo0
ip add 172.2.0.1 255.255.255.0
int tun0
ip addr 192.168.0.2 255.255.255.0
tunnel source gig0/0
tunnel mode gre multipoint
tunnel key 1
ip nhrp network-id 1
ip nhrp authentication cisco123
ip nhrp map multicast 10.0.0.1
ip nhrp map 192.168.0.1 10.0.0.1
ip nhrp shortcut
ip nhrp nhs 192.168.0.1
router eigrp 100
network 172.2.0.0 0.0.0.255
network 192.168.0.0 0.0.0.255
RC - Configuration
--------------------------------
int lo0
ip add 172.3.0.1 255.255.255.0
int tun0
ip addr 192.168.0.3 255.255.255.0
tunnel source gig0/0
tunnel mode gre multipoint
tunnel key 1
ip nhrp network-id 1
ip nhrp authentication cisco123
ip nhrp map multicast 10.0.0.1
ip nhrp map 192.168.0.1 10.0.0.1
ip nhrp shortcut
ip nhrp nhs 192.168.0.1
router eigrp 100
network 172.3.0.0 0.0.0.255
network 192.168.0.0 0.0.0.255
RA - sh ip nhrp brief
--------------------------------
RA#sh ip nhrp brief
****************************************************************************
NOTE: Link-Local, No-socket and Incomplete entries are not displayed
****************************************************************************
Legend: Type --> S - Static, D - Dynamic
Flags --> u - unique, r - registered, e - temporary, c - claimed
a - authoritative, t - route
============================================================================
Intf NextHop Address Target Network T/Flag NBMA Address
-------- ------------------------------------------- ------ ----------------
Tu0 192.168.0.2 D/r 10.0.1.1
192.168.0.2/32
Tu0 192.168.0.3 D/r 10.0.4.2
192.168.0.3/32
RA - sh ip route
--------------------------------
D 172.2.0.0/24 [90/27008000] via 192.168.0.2, 00:16:16, Tunnel0
D 172.3.0.0/24 [90/27008000] via 192.168.0.3, 00:16:16, Tunnel0
RB - sh ip route
--------------------------------
D 172.1.0.0/24 [90/27008000] via 192.168.0.1, 00:17:22, Tunnel0
RC - sh ip route
--------------------------------
D 172.1.0.0/24 [90/27008000] via 192.168.0.1, 00:17:22, Tunnel0
Why are the multicast packets not redirected?
Thanks in advance,
Lorenz
11-05-2022 11:50 AM - edited 11-05-2022 12:00 PM
are you use phase III?
if Yes then
do
Spoke & Hub
router eigrp 100
no auto summary
in Hub
router eigrp 100
summary-address 172.0.0.0
and check again by ping from Spoke to Spoke using LAN you advertise via EIGRP.
Ping need to check DMVPN work in PhaseIII
11-06-2022 11:52 PM
Hello
RA - Configuration
int tun0
ip nhrp shortcut
no ip split-horizon eigrp 100
RB-C - Configuration
int tun0
ip nhrp redirect
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