Pages

network cisco ccna gns3 certification arteq

network cisco ccna gns3 certification arteq
a network runs through it

Search insearchofthecert

Sunday, December 16, 2012

v6l3 tshoot topo continued...

this has been a good topology for me.... there's a lot going on for such a seemingly simple topology... but then cisco has a way of including everything and the kitchen sink in a compact way...

 i started with the ripng config...

dlsw1#sh ipv6 rip
RIP process "ripzone", port 521, multicast-group FF02::9, pid 3
     Administrative distance is 120. Maximum paths is 16
     Updates every 30 seconds, expire after 180
     Holddown lasts 0 seconds, garbage collect after 120
     Split horizon is on; poison reverse is off
     Default routes are not generated
     Periodic updates 2013, trigger updates 9
  Interfaces:
    Loopback0
    Vlan2
  Redistribution:
    None
dlsw1#

dlsw2#sh ipv6 route rip
IPv6 Routing Table - Default - 7 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, R - RIP, D - EIGRP, EX - EIGRP external
       ND - Neighbor Discovery
       O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
R   2002::1:1/128 [120/2]
     via FE80::C800:14FF:FE99:6, Vlan2
R   2002::1:3/128 [120/2]
     via FE80::216:47FF:FE9E:4545, Vlan2
R   2026::2:0/122 [120/2]
     via FE80::216:47FF:FE9E:4545, Vlan2
     via FE80::C800:14FF:FE99:6, Vlan2

i went with an svi configuration, because that's what i do... you could do the same with routed ports...

dlsw1#sh run int vlan 2
Building configuration...

Current configuration : 119 bytes
!
interface Vlan2
 no ip address
 ipv6 address 2026::2:2/122
 ipv6 address 2026::3:1/122
 ipv6 rip ripzone enable

dlsw1#sh ipv6 int
Vlan2 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::216:47FF:FE9E:4545
  No Virtual link-local address(es):
  Global unicast address(es):
    2026::2:2, subnet is 2026::2:0/122
    2026::3:1, subnet is 2026::3:0/122
  Joined group address(es):
    FF02::1
    FF02::2
    FF02::9
    FF02::1:FF02:2
    FF02::1:FF03:1
    FF02::1:FF9E:4545

i added ospfv3 to the routers...

R1#sh ipv6 route ospf

IPv6 Routing Table - default - 5 entries

OI  2026::1:0/122 [110/192]
     via FE80::C802:14FF:FE99:8, Serial1/0
OI  2026::34:0/122 [110/129]
     via FE80::C802:14FF:FE99:8, Serial1/0

R4#sh ipv6 route ospf
IPv6 Routing Table - default - 12 entries

OI  2026::1:0/122 [110/65]
     via FE80::C803:14FF:FE99:8, FastEthernet0/0
OI  2026::12:0/122 [110/129]
     via FE80::C803:14FF:FE99:8, FastEthernet0/0

then redistributed rip first...

R3#sh ipv6 route ospf

OE2 2002::1:3/128 [110/20]
     via FE80::C800:14FF:FE99:8, FastEthernet0/0
OE2 2026::3:0/122 [110/20]
     via FE80::C800:14FF:FE99:8, FastEthernet0/0
OI  2026::12:0/122 [110/128]
     via FE80::C802:14FF:FE99:8, Serial1/1

and ospf... here is where one needs to be careful...

if only:

redistribute ospf 6 metric 5

then 2026::34 is not included, as below...

dlsw2#sh ipv6 route rip                                                        
                 
R   2002::1:1/128 [120/2]                                                      
     via FE80::C800:14FF:FE99:6, Vlan2                                         
R   2002::1:3/128 [120/2]                                                      
     via FE80::216:47FF:FE9E:4545, Vlan2                                       
R   2026::1:0/122 [120/6]                                                      
     via FE80::C800:14FF:FE99:6, Vlan2                                         
R   2026::2:0/122 [120/2]                                                      
     via FE80::C800:14FF:FE99:6, Vlan2                                         
     via FE80::216:47FF:FE9E:4545, Vlan2                                       
R   2026::12:0/122 [120/6]                                                     
     via FE80::C800:14FF:FE99:6, Vlan2    

but with:

redistribute ospf 6 metric 5 include-connected

dlsw2#sh ipv6 route rip                                                        
                       
R   2002::1:1/128 [120/2]                                                      
     via FE80::C800:14FF:FE99:6, Vlan2                                         
R   2002::1:3/128 [120/2]                                                      
     via FE80::216:47FF:FE9E:4545, Vlan2                                       
R   2026::1:0/122 [120/6]                                                      
     via FE80::C800:14FF:FE99:6, Vlan2                                         
R   2026::2:0/122 [120/2]                                                      
     via FE80::C800:14FF:FE99:6, Vlan2                                         
     via FE80::216:47FF:FE9E:4545, Vlan2                                       
R   2026::12:0/122 [120/6]                                                     
     via FE80::C800:14FF:FE99:6, Vlan2                                         
R   2026::34:0/122 [120/6]                                                     
     via FE80::C800:14FF:FE99:6, Vlan2      

gets them all...  the 2002's are loopbacks i included as a sanity check...

and there's still the gre tunnel to get to...  i spent quite a bit of time with this as i often became tangential with particular things along the way... i did a lot of captures, tcpdumps, etc... this is surprisingly complex...

the question still remains; why are folks adding frame to this...

No comments:

Post a Comment