IPv6 named EIGRP help

hurricane1091hurricane1091 Member Posts: 919 ■■■■□□□□□□
in CCNP
Hello all,

I was working on IPv6 EIGRP today and learned a little bit, but I am confused about the named EIGRP aspect. Under IPv4 named format, you still use the network command it seems to enable interfaces for that EIGRP instance, but you do it under address-family configuration.

Under classic configuration, I understand that you enable EIGRP under the interface. However, how do you do it under the named configuration? The book essentially seems to not explain, and I am struggling to find the answer online. Please advise :)
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  • theodoxatheodoxa Member Posts: 1,340 ■■■■□□□□□□
    If I remember correctly, EIGRP for IPv6 is active on all interfaces where IPv6 in enabled unless you manually override it in AF Interface Submode. You just have to enable the IPv6 Address Family.
    interface GigabitEthernet 0/0
  ipv6 enable
  exit

interface GigabitEthernet 0/1
  ipv6 enable
  exit

router eigrp SomeName
  address-family ipv6 unicast autonomous-system 10
    af-interface GigabitEthernet 0/0
      shutdown

    or
    interface GigabitEthernet 0/0
   ipv6 enable
   exit

interface GigabitEthernet 0/1
   ipv6 enable
   exit

router eigrp SomeName
  address-family ipv6 unicast autonomous-system 10
    af-interface default
      shutdown
      exit-af-interface
    af-interface GigabitEthernet 0/1
      no shutdown
    R&S: CCENT → CCNA → CCNP → CCIE [ ]
    Security: CCNA [ ]
    Virtualization: VCA-DCV [ ]
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  • hurricane1091hurricane1091 Member Posts: 919 ■■■■□□□□□□
    Thank you for the reply. I am going to try this!
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  • theodoxatheodoxa Member Posts: 1,340 ■■■■□□□□□□ 
    R1#show ipv6 interface brief
GigabitEthernet1       [up/up]
    unassigned
GigabitEthernet1.13    [up/up]
    FE80::20C:29FF:FEDB:C2A1
    2001:155:1:13::1
GigabitEthernet1.100   [up/up]
    FE80::20C:29FF:FEDB:C2A1
    2001:169:254:100::1
GigabitEthernet1.146   [up/up]
    FE80::20C:29FF:FEDB:C2A1
    2001:155:1:146::1
GigabitEthernet2       [administratively down/down]
    unassigned
GigabitEthernet3       [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::21E:F6FF:FEA1:4600
    2001:150:1:1::1
Tunnel0                [up/up]
    unassigned
R1#
R1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router eigrp MyEIGRP
R1(config-router)#address-family ipv6 unicast autonomous-system 10
R1(config-router-af)#exit-address-family
R1(config-router)#end
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#
R1#show ipv6 protocols
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "application"
IPv6 Routing Protocol is "ND"
IPv6 Routing Protocol is "eigrp 10"
EIGRP-IPv6 VR(MyEIGRP) Address-Family Protocol for AS(10)
  Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 K6=0
  Metric rib-scale 128
  Metric version 64bit
  Soft SIA disabled
  NSF-aware route hold timer is 240
  EIGRP NSF disabled
     NSF signal timer is 20s
     NSF converge timer is 120s
  Router-ID: 150.1.1.1
  Topology : 0 (base)
    Active Timer: 3 min
    Distance: internal 90 external 170
    Maximum path: 16
    Maximum hopcount 100
    Maximum metric variance 1
    Total Prefix Count: 8
    Total Redist Count: 0

 [B] Interfaces:
    GigabitEthernet1.13
    GigabitEthernet1.100
    GigabitEthernet1.146
    Loopback0[/B]
  Redistribution:
    None
R1#
R1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router eigrp MyEIGRP
R1(config-router)#address-family ipv6 unicast autonomous-system 10
R1(config-router-af)#[B]af-interface GigabitEthernet 1.100[/B]
R1(config-router-af-interface)#[B]shutdown[/B]
R1(config-router-af-interface)#
[B]%DUAL-5-NBRCHANGE: EIGRP-IPv6 10: Neighbor FE80::20C:29FF:FE12:C7B7 (GigabitEthernet1.100) is down: interface down[/B]
R1(config-router-af-interface)#exit-af-interface
R1(config-router-af)#exit-address-family
R1(config-router)#end
R1#

    R4#show ipv6 interface brief
GigabitEthernet1       [up/up]
    unassigned
GigabitEthernet1.45    [up/up]
    FE80::20C:29FF:FE12:C7B7
    2001:155:1:45::4
GigabitEthernet1.100   [up/up]
    FE80::20C:29FF:FE12:C7B7
    2001:169:254:100::4
GigabitEthernet1.146   [administratively down/down]
    FE80::20C:29FF:FE12:C7B7
    2001:155:1:146::4
GigabitEthernet2       [administratively down/down]
    unassigned
GigabitEthernet3       [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::21E:F6FF:FEB7:9E00
    2001:150:4:4::4
Tunnel0                [up/up]
    unassigned
R4#
R4#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R4(config)#router eigrp MyEIGRP
R4(config-router)#address-family ipv6 unicast autonomous-system 10
R4(config-router-af)#
[B]%DUAL-5-NBRCHANGE: EIGRP-IPv6 10: Neighbor FE80::20C:29FF:FEDB:C2A1 (GigabitEthernet1.100) is up: new adjacency
[/B]R4(config-router-af)#exit-address-family
R4(config-router)#end
R4#
%SYS-5-CONFIG_I: Configured from console by console
R4#
R4#show ipv6 protocols
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "application"
IPv6 Routing Protocol is "ND"
IPv6 Routing Protocol is "eigrp 10"
EIGRP-IPv6 VR(MyEIGRP) Address-Family Protocol for AS(10)
  Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 K6=0
  Metric rib-scale 128
  Metric version 64bit
  Soft SIA disabled
  NSF-aware route hold timer is 240
  EIGRP NSF disabled
     NSF signal timer is 20s
     NSF converge timer is 120s
  Router-ID: 150.1.4.4
  Topology : 0 (base)
    Active Timer: 3 min
    Distance: internal 90 external 170
    Maximum path: 16
    Maximum hopcount 100
    Maximum metric variance 1
    Total Prefix Count: 8
    Total Redist Count: 0

[B]  Interfaces:
    GigabitEthernet1.45
    GigabitEthernet1.100
    Loopback0[/B]
  Redistribution:
    None
R4#
R4#
[B]%DUAL-5-NBRCHANGE: EIGRP-IPv6 10: Neighbor FE80::20C:29FF:FEDB:C2A1 (GigabitEthernet1.100) is down: Interface PEER-TERMINATION received[/B]
R4#

    R6#show ipv6 interface brief
GigabitEthernet1       [up/up]
    unassigned
GigabitEthernet1.67    [up/up]
    FE80::20C:29FF:FEC7:6914
    2001:155:1:67::6
GigabitEthernet1.146   [up/up]
    FE80::20C:29FF:FEC7:6914
    2001:155:1:146::6
GigabitEthernet2       [administratively down/down]
    unassigned
GigabitEthernet3       [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::21E:E5FF:FE14:8F00
    2001:150:6:6::6
R6#
R6#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R6(config)#router eigrp MyEIGRP
R6(config-router)#address-family ipv6 unicast autonomous-system 10
R6(config-router-af)#
[B]%DUAL-5-NBRCHANGE: EIGRP-IPv6 10: Neighbor FE80::20C:29FF:FEDB:C2A1 (GigabitEthernet1.146) is up: new adjacency
[/B]R6(config-router-af)#exit-address-family
R6(config-router)#end
R6#
%SYS-5-CONFIG_I: Configured from console by console
R6#
R6#show ipv6 protocols
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "application"
IPv6 Routing Protocol is "ND"
IPv6 Routing Protocol is "eigrp 10"
EIGRP-IPv6 VR(MyEIGRP) Address-Family Protocol for AS(10)
  Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 K6=0
  Metric rib-scale 128
  Metric version 64bit
  Soft SIA disabled
  NSF-aware route hold timer is 240
  EIGRP NSF disabled
     NSF signal timer is 20s
     NSF converge timer is 120s
  Router-ID: 150.1.6.6
  Topology : 0 (base)
    Active Timer: 3 min
    Distance: internal 90 external 170
    Maximum path: 16
    Maximum hopcount 100
    Maximum metric variance 1
    Total Prefix Count: 8
    Total Redist Count: 0
[B]
  Interfaces:
    GigabitEthernet1.67
    GigabitEthernet1.146
    Loopback0[/B]
  Redistribution:
    None
R6#
    R&S: CCENT → CCNA → CCNP → CCIE [ ]
    Security: CCNA [ ]
    Virtualization: VCA-DCV [ ]
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  • hurricane1091hurricane1091 Member Posts: 919 ■■■■□□□□□□
    Interesting that it works that way.
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