6.1 IPv6 IGPs

ok this one has me stump.

I am not advertising the g1.210 interface of R10 into eigrpv6 but it shows up in eigrpv6 topology of R10 and also gets redistributed from eigrpv6 into ospfv3 and shows up on R11 - R15.

I can also ping this IPv6 prefix from R15. My question is how is this ipv6 prefix getting advertise into eigrpv6, redistributed into ospfv3 without me advertising it.

I have look everywhere but cannot find anything that would explain this behavior in eigrpv6. Anyone else reah this far in the lab and experience this. I am using CSR1000v`s running on ESXi 5.1.

Am I missing something?

R10#sh run | sec router

router eigrp EIGRP2
 !
 address-family ipv4 unicast autonomous-system 789
  !
  af-interface default
   passive-interface
  exit-af-interface
  !
  af-interface GigabitEthernet1.102
   bfd
   no passive-interface
  exit-af-interface
  !
  topology base
   redistribute bgp 65100 metric 1000000 10 255 1 1500 route-map REDIST-BGP
  exit-af-topology
  network 172.19.102.10 0.0.0.0
  network 192.122.3.0
  metric rib-scale 116
 exit-address-family
 !
 address-family ipv6 unicast autonomous-system 789
  !
  af-interface default
   passive-interface
  exit-af-interface
  !
  af-interface GigabitEthernet1.102
   no passive-interface
  exit-af-interface
  !
  topology base
  exit-af-topology
 exit-address-family

 

R10#sh ipv6 eigrp topology
EIGRP-IPv6 VR(EIGRP2) Topology Table for AS(789)/ID(192.122.3.10)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 2001:202:4:210::/64, 1 successors, FD is 1310720
        via Connected, GigabitEthernet1.210

 

R10#sh run int g1.210
Building configuration...

Current configuration : 138 bytes
!
interface GigabitEthernet1.210
 encapsulation dot1Q 210
 ip address 202.4.210.10 255.255.255.0
 ipv6 address 2001:202:4:210::10/64

 

 

R15#sh ipv6 route 2001:202:4:210::/64
Routing entry for 2001:202:4:210::/64
  Known via "ospf 5", distance 110, metric 20, type extern 2
  Route count is 2/2, share count 0
  Routing paths:
    FE80::250:56FF:FEB5:4596, GigabitEthernet1.134
      Last updated 00:39:52 ago
    FE80::250:56FF:FEB5:965, GigabitEthernet1.134
      Last updated 00:26:40 ago

 

R15#ping ipv6 2001:202:4:210::10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:202:4:210::10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms
R15#

Comments

  • ok this one has me stump.

    I am not advertising the g1.210 interface of R10 into eigrpv6 but it shows up in eigrpv6 topology of R10 and also gets redistributed from eigrpv6 into ospfv3 and shows u

    Read the Task 6.1 solution ...the solution guide explains this behavior =) 

     

  • Thanks!

    I have not look at solution guide yet. I usually do this at completion of a lab. I will have to take a peek now :).

    Good to know it is an expected behavior.

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