[lacnog] DHCPv6
Fernando R. Soto
frsoto en gmail.com
Mar Dic 27 12:37:00 -03 2022
Muchas gracias por la ayuda Uesley.
El test lo estoy haciendo con una OLT Huawei en capa 3 y la ONT está en modo bridge. Con lo cual la q envía el RA es la OLT
Así esta configurado la interfaz vlan
OLT1(config-if-vlanif1010)#display this include-default
{ <cr>||<K> }:
Command:
display this include-default
#
interface Vlanif1010
mtu 1500
description "CPE-PRIV"
undo shutdown
ip binding vpn-instance "VRF-NAT"
ipv6 enable
ip address 10.66.128.1 255.255.224.0
ipv6 address 2800:f91:760:20::1/64
ipv6 address auto link-local
ipv6 mtu 1500
undo ip verify source-address
static-route timer ldp-sync hold-down 10
undo mpls
undo ipv6 nd nud reachable-time
undo ipv6 nd ns retrans-timer
ipv6 nd ra Max-interval 600
undo ipv6 nd ra halt PARA Q ENVÍE LOS RA
undo ipv6 nd autoconfig managed-address-flag
undo ipv6 nd autoconfig other-flag
ipv6 nd dad attempts 1
ipv6 nd ra preference medium
ipv6 nd ra prefix default no-advertise PARA Q NO UNUNCIE EL PREFIJO GUA POR EL RA
undo ipv6 nd ra advertised-mtu disable
dhcp-server 1
dhcpv6-server 1
#
return
De: LACNOG <lacnog-bounces en lacnic.net> En nombre de Uesley Correa
Enviado el: martes, 27 de diciembre de 2022 11:13
Para: Latin America and Caribbean Region Network Operators Group <lacnog en lacnic.net>
Asunto: Re: [lacnog] DHCPv6
Hola Fernando!
¿Ya probaste con /56? Ya he escuchado de routers que no aceptan recibir /48. Otro detalle: ¿hay algo de RA en esa interfaz de salida? Ya he visto routers en DHCP que, si no reciben informaciones por ND, no aplican / aceptan asignaciones por DHCP.
Saludos,
Uesley Corrêa - Analista de Telecomunicaciones
CEO Telecom Consultoria, Entrenamiento y Servicios
CEO Telecom Fiber Solutions
On Tue, Dec 27, 2022 at 10:57 AM Fernando R. Soto <frsoto en gmail.com <mailto:frsoto en gmail.com> > wrote:
Estimados, por favor una consulta
Levanté un DHCPv6 con Kea. Y veo que un router TP Link hace un Release de la ip y prefijo que le advierto. Como que no lo acepta porque algo no le gusta… Como puedo saber que no le gustando o que le está faltando?
Slds cordiales
Este es el Advertise de mi DHCP
Frame 6: 308 bytes on wire (2464 bits), 308 bytes captured (2464 bits)
Linux cooked capture v1
Internet Protocol Version 6, Src: 2800:f91:20::11, Dst: 2800:f91:760:20::1
User Datagram Protocol, Src Port: 547, Dst Port: 547
DHCPv6
Message type: Relay-reply (13)
Hopcount: 0
Link address: 2800:f91:760:20::1
Peer address: fe80::1aa6:f7ff:fe99:651d
Interface-Id
Option: Interface-Id (18)
Length: 37
Interface-ID: 4f4c5431504f5033382d50454c2078706f6e20302f31312f302f31323a34362e322e3130…
Relay Message
Option: Relay Message (9)
Length: 165
DHCPv6
Message type: Advertise (2)
Transaction ID: 0x4e9fda
Client Identifier
Option: Client Identifier (1)
Length: 14
DUID: 000100012b33000518a6f799651d
DUID Type: link-layer address plus time (1)
Hardware type: Ethernet (1)
DUID Time: Dec 19, 2022 07:57:09.000000000 Hora estándar de Argentina
Link-layer address: 18:a6:f7:99:65:1d
Server Identifier
Option: Server Identifier (2)
Length: 14
DUID: 000100012993e1f2000c299d6a9f
DUID Type: link-layer address plus time (1)
Hardware type: Ethernet (1)
DUID Time: Feb 7, 2022 10:58:10.000000000 Hora estándar de Argentina
Link-layer address: 00:0c:29:9d:6a:9f
Identity Association for Non-temporary Address
Option: Identity Association for Non-temporary Address (3)
Length: 40
IAID: 000207a2
T1: 1000
T2: 2000
IA Address
Option: IA Address (5)
Length: 24
IPv6 address: 2800:f91:760:20::28e2
Preferred lifetime: 3000
Valid lifetime: 4000
DNS recursive name server
Option: DNS recursive name server (23)
Length: 32
1 DNS server address: 2001:4860:4860::8888
2 DNS server address: 2001:4860:4860::8844
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 41
IAID: 000207a1
T1: 1000
T2: 2000
IA Prefix
Option: IA Prefix (26)
Length: 25
Preferred lifetime: 3000
Valid lifetime: 4000
Prefix length: 48
Prefix address: 2800:f91:2091::
Y este es el Release
Frame 10: 233 bytes on wire (1864 bits), 233 bytes captured (1864 bits)
Linux cooked capture v1
Internet Protocol Version 6, Src: 2800:f91:760:20::1, Dst: 2800:f91:20::11
User Datagram Protocol, Src Port: 547, Dst Port: 547
DHCPv6
Message type: Relay-forw (12)
Hopcount: 0
Link address: 2800:f91:760:20::1
Peer address: fe80::1aa6:f7ff:fe99:651d
Interface-Id
Option: Interface-Id (18)
Length: 37
Interface-ID: 4f4c5431504f5033382d50454c2078706f6e20302f31312f302f31323a34362e322e3130…
Relay Message
Option: Relay Message (9)
Length: 90
DHCPv6
Message type: Release (8)
Transaction ID: 0x708205
Client Identifier
Option: Client Identifier (1)
Length: 14
DUID: 000100012b33000518a6f799651d
DUID Type: link-layer address plus time (1)
Hardware type: Ethernet (1)
DUID Time: Dec 19, 2022 07:57:09.000000000 Hora estándar de Argentina
Link-layer address: 18:a6:f7:99:65:1d
Server Identifier
Option: Server Identifier (2)
Length: 14
DUID: 000100012993e1f2000c299d6a9f
DUID Type: link-layer address plus time (1)
Hardware type: Ethernet (1)
DUID Time: Feb 7, 2022 10:58:10.000000000 Hora estándar de Argentina
Link-layer address: 00:0c:29:9d:6a:9f
Identity Association for Non-temporary Address
Option: Identity Association for Non-temporary Address (3)
Length: 40
IAID: 000207a2
T1: 1000
T2: 2000
IA Address
Option: IA Address (5)
Length: 24
IPv6 address: 2800:f91:760:20::28e2
Preferred lifetime: 3000
Valid lifetime: 4000
Elapsed time
Option: Elapsed time (8)
Length: 2
Elapsed time: 0ms
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