Solución de problemas relacionados con VRRPv3 con IPv6

Actualizado:15 de abril de 2024
ID del documento:221889

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    Introducción

    Este documento describe los pasos para resolver problemas del Protocolo de redundancia de router virtual versión 3 (VRRPv3) con IPv6 en Nexus 9000.

    Prerequisites

    Requirements

    Cisco NXOS® recomienda que conozca estos temas:

    • VRRP
    • Etanizador
    • IPv6
    • Protocolo de redundancia de primer salto (FHRP)

    Componentes Utilizados

    Este documento está restringido a hardware específico como Nexus 9000.

    La información que contiene este documento se creó a partir de los dispositivos en un ambiente de laboratorio específico. Todos los dispositivos que se utilizan en este documento se pusieron en funcionamiento con una configuración verificada (predeterminada). Si tiene una red en vivo, asegúrese de entender el posible impacto de cualquier comando.

    Antecedentes

    La versión 2 de VRRP sólo admite la familia de direcciones IPv4, pero la versión 3 de VRRP (VRRP3) admite las familias de direcciones IPv4 e IPv6. En NX-OS, tanto VRRP como VRRPv3 no se pueden habilitar en el mismo dispositivo. Si la función VRRP ya está activada en el switch Nexus, al activar la función, el VRRPv3 muestra un error que indica que el VRRPv2 ya está activado. Por lo tanto, se debe realizar una migración de VRRP a VRRPv3, que tiene un impacto mínimo en los servicios.

    Topología

    Topología

     

    icono de nota

    Nota: entorno sin canal de puerto virtual (VPC).

     

    Verificación

    1) Verifique que la configuración en ambos lados coincida.

    Switch 1:

    Switch1# show run interface vlan 209

    interface Vlan209
    no shutdown
    no ip redirects
    ipv6 address X:X:X:X::70a/125
    vrrpv3 1 address-family ipv6
    priority 200
    address X::X:X:X:297 primary

    Switch1#

    Switch 2:

    Switch2# show run interface vlan 209

    interface Vlan209
    no shutdown
    no ip redirects
    ipv6 address X:X:X:X::70c/125
    no ipv6 redirects
    vrrpv3 1 address-family ipv6
    address X::X:X:X:297 primary

    Switch2#

    2) Compruebe que la tabla de direcciones MAC está rellenada correctamente.

    Switch 1:

    Switch1# show mac address-table vlan 209
    Legend:
    * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
    age - seconds since last seen,+ - primary entry using vPC Peer-Link,
    (T) - True, (F) - False, C - ControlPlane MAC, ~ - vsan
    VLAN MAC Address Type age Secure NTFY Ports
    ---------+-----------------+--------+---------+------+----+------------------
    G 209 0000.5e00.0201 static - F F sup-eth1(R)
    G 209 689e.0baa.dea7 static - F F sup-eth1(R)
    Switch1#
    module-1# show hardware internal tah rmac
    Instance : 0
    ====================================
    Mac-Address Vlan Flag
    ------------------------------------
    68:9e:0b:aa:de:a7 0 SYSTEM
    00:00:5e:00:02:01 209 VRMAC

    module-1#

    Switch 2:

    Switch2# show mac address-table vlan 209
    Legend:
    * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
    age - seconds since last seen,+ - primary entry using vPC Peer-Link,
    (T) - True, (F) - False, C - ControlPlane MAC, ~ - vsan
    VLAN MAC Address Type age Secure NTFY Ports
    ---------+-----------------+--------+---------+------+----+------------------
    * 209 0000.5e00.0201 dynamic 0 F F Eth1/51
    G 209 689e.0baa.de07 static - F F sup-eth1(R)
    Switch2#
    Switch2# show hardware mac address-table 1 address 0000.5e00.0201
    FE | VLAN | MAC | Dynamic | Port |Location Index|
    | | | | | |
    ---+------+---------------+---------+---------+--------------+
    0 209 0000.5e00.0201 dynamic Eth1/51

    Switch2#
    module-1# show hardware internal tah rmac
    Instance : 0
    ====================================
    Mac-Address Vlan Flag
    ------------------------------------
    68:9e:0b:aa:de:07 0 SYSTEM

    module-1#

    3) Verificar el estado de los dispositivos que participan en el grupo.

    Switch 1:

    Switch1# show vrrpv3 vlan 209


    Vlan209 - Group 1 - Address-Family IPv6
    State is Primary
    State duration 15 hours 43 mins 44 secs
    Virtual IP address is X::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 200, (Configured 200)
    Primary Router is X::X:X:X:dea7 (local), priority is 200
    Primary Advertisement interval is 1000 msec (expires in 813 msec)
    Primary Down interval is unknown

    Switch1#


    Switch 2:


    Switch2# show vrrpv3 vlan 209


    Vlan209 - Group 1 - Address-Family IPv6
    State is BACKUP
    State duration 3 mins 57.928 secs
    Virtual IP address is X::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 100, (Configured 100)
    Primary Router is X::X:X:X:dea7, priority is 200
    Primary Advertisement interval is 1000 msec (learned)
    Primary Down interval is 3609 msec (expires in 3422 msec)

    Switch2#

    Troubleshoot

    Escenario roto.

    1) La opción de comando show vrpv3 brief muestra la información breve relacionada con el grupo, como el número de grupo, la familia de direcciones, la prioridad, la preferencia, el estado, la dirección principal y la dirección del grupo (que es la IP del grupo virtual). En este ejemplo, y como se describió anteriormente, ambos switches son primarios, lo cual no es correcto.

    Switch 1:

    Switch1# show vrrpv3 brief

    Interface Grp A-F Pri Time Own Pre State Primary addr/Group addr
    Vlan209 1 IPv6 200 0 N Y Primary X::X:X:X:dea7(local) X::X:X:X:297
    Switch1#

    Switch 2:

    Switch2# show vrrpv3 brief

    Interface Grp A-F Pri Time Own Pre State Primary addr/Group addr
    Vlan209 1 IPv6 100 0 N Y Primary X::X:X:X:de07(local) X::X:X:X:297
    Switch2#

    2) El comando show vrpv3 detail muestra información adicional, como anuncios enviados y recibidos para VRRPv3, dirección MAC virtual y otras estadísticas relacionadas con errores y estados de transición. Por ejemplo, los anuncios VRRPv3 recibidos no aumentan.

    Switch 1:

    Switch1# show vrrpv3 detail vlan 209

    Vlan209 - Group 1 - Address-Family IPv6
    State is Primary
    State duration 12 hours 47 mins 40 secs
    Virtual IP address is X::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 200, (Configured 200)
    Primary Router is X::X:X:X:dea7 (local), priority is 200
    Primary Advertisement interval is 1000 msec (expires in 284 msec)
    Primary Down interval is unknown
    VRRPv3 Advertisements: sent 57138 (errors 2) - rcvd 177       <--------
    VRRPv2 Advertisements: sent 0 (errors 0) - rcvd 0
    Group Discarded Packets: 0
    VRRPv2 incompatibility: 0
    IP Address Owner conflicts: 0
    Invalid address count: 0
    IP address configuration mismatch : 0
    Invalid Advert Interval: 0
    Adverts received in Init state: 0
    Invalid group other reason: 0
    Group State transition:
    Init to Primary: 0
    Init to backup: 4 (Last change Thu Apr 11 01:01:46.418 UTC)
    Backup to Primary: 4 (Last change Thu Apr 11 01:01:49.637 UTC)
    Primary to backup: 0
    Primary to init: 3 (Last change Thu Apr 11 00:57:37.107 UTC)
    Backup to init: 0

    Switch1#
    Switch1# show vrrpv3 detail vlan 209

    Vlan209 - Group 1 - Address-Family IPv6
    State is Primary
    State duration 12 hours 51 mins 29 secs
    Virtual IP address is fX::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 200, (Configured 200)
    Primary Router is X::X:X:X:dea7 (local), priority is 200
    Primary Advertisement interval is 1000 msec (expires in 667 msec)
    Primary Down interval is unknown
    VRRPv3 Advertisements: sent 57393 (errors 2) - rcvd 177         <--------
    VRRPv2 Advertisements: sent 0 (errors 0) - rcvd 0
    Group Discarded Packets: 0
    VRRPv2 incompatibility: 0
    IP Address Owner conflicts: 0
    Invalid address count: 0
    IP address configuration mismatch : 0
    Invalid Advert Interval: 0
    Adverts received in Init state: 0
    Invalid group other reason: 0
    Group State transition:
    Init to Primary: 0
    Init to backup: 4 (Last change Thu Apr 11 01:01:46.418 UTC)
    Backup to Primary: 4 (Last change Thu Apr 11 01:01:49.637 UTC)
    Primary to backup: 0
    Primary to init: 3 (Last change Thu Apr 11 00:57:37.107 UTC)
    Backup to init: 0

    Switch1#

    Switch 2:

    Switch2# show vrrpv3 detail vlan 209

    Vlan209 - Group 1 - Address-Family IPv6
    State is Primary
    State duration 12 hours 51 mins 49 secs
    Virtual IP address is X::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 100, (Configured 100)
    Primary Router is X::X:X:X:de07 (local), priority is 100
    Primary Advertisement interval is 1000 msec (expires in 412 msec)
    Primary Down interval is unknown
    VRRPv3 Advertisements: sent 51764 (errors 0) - rcvd 6032          <--------
    VRRPv2 Advertisements: sent 0 (errors 0) - rcvd 0
    Group Discarded Packets: 0
    VRRPv2 incompatibility: 0
    IP Address Owner conflicts: 0
    Invalid address count: 0
    IP address configuration mismatch : 0
    Invalid Advert Interval: 0
    Adverts received in Init state: 0
    Invalid group other reason: 0
    Group State transition:
    Init to Primary: 0
    Init to backup: 1 (Last change Wed Apr 10 23:21:09.604 UTC)
    Backup to Primary: 4 (Last change Thu Apr 11 00:57:40.229 UTC)
    Primary to backup: 3 (Last change Thu Apr 11 00:54:11.758 UTC)
    Primary to init: 0
    Backup to init: 0

    Switch2#
    Switch2# show vrrpv3 detail vlan 209

    Vlan209 - Group 1 - Address-Family IPv6
    State is Primary
    State duration 12 hours 55 mins 38 secs
    Virtual IP address is fX::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 100, (Configured 100)
    Primary Router is X::X:X:X:de07 (local), priority is 100
    Primary Advertisement interval is 1000 msec (expires in 479 msec)
    Primary Down interval is unknown
    VRRPv3 Advertisements: sent 52019 (errors 0) - rcvd 6032       <--------
    VRRPv2 Advertisements: sent 0 (errors 0) - rcvd 0
    Group Discarded Packets: 0
    VRRPv2 incompatibility: 0
    IP Address Owner conflicts: 0
    Invalid address count: 0
    IP address configuration mismatch : 0
    Invalid Advert Interval: 0
    Adverts received in Init state: 0
    Invalid group other reason: 0
    Group State transition:
    Init to Primary: 0
    Init to backup: 1 (Last change Wed Apr 10 23:21:09.604 UTC)
    Backup to Primary: 4 (Last change Thu Apr 11 00:57:40.229 UTC)
    Primary to backup: 3 (Last change Thu Apr 11 00:54:11.758 UTC)
    Primary to init: 0
    Backup to init: 0

    Switch2#

    3) El comando show vrrpv3 internal event-history debugs muestra información sobre las diferentes etapas por las que ha pasado el participante de VRRPv3.

    Switch 1:

    Switch1# show vrrpv3 internal event-history debugs

    2024 Apr 11 01:01:49.642985: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Change: MAC=0000.5e00.0201, OldState='Active Wait', NewState='Active'

    2024 Apr 11 01:01:49.642974: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Event: MAC=0000.5e00.0201, Event=Ack Active, CurrentState=Active Wait

    2024 Apr 11 01:01:49.642963: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Pathway MAC Event: PathwayID=983043

    2024 Apr 11 01:01:49.642952: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Notifying Pathway MAC Of Async Event: Event='Ack Active', ErrStr='SUCCESS'

    2024 Apr 11 01:01:49.642941: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: L2fm Alloc Response For MAC: MAC=0000.5e00.0201, Status=0x0, ErrStr='SUCCESS'

    2024 Apr 11 01:01:49.642898: E_DEBUG vrrpv3 [23795]: VRRP-MTS: L2fm Alloc Response: RRToken=0x2f9a22, NumMessages=1, OverallStatus=0x0

    2024 Apr 11 01:01:49.637478: E_DEBUG vrrpv3 [23795]: VRRS Vlan209: [vrrpVlan209v61 tag] Installing ICMPv6 Entry For: VIP=X::X:X:X:297, Flag=0x3

    2024 Apr 11 01:01:49.637453: E_DEBUG vrrpv3 [23795]: VRRS Vlan209: [vrrpVlan209v61 tag] Activating VIP6, That Was In State: VIP=X::X:X:X:297, State='Inactive'

    2024 Apr 11 01:01:49.637367: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Change: MAC=0000.5e00.0201, OldState='Standby', NewState='Active Wait'

    2024 Apr 11 01:01:49.637306: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Event: MAC=0000.5e00.0201, Event=Request Active, CurrentState=Standby

    2024 Apr 11 01:01:49.637295: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Pathway MAC Event: PathwayID=983043

    2024 Apr 11 01:01:47.421619: E_DEBUG vrrpv3 [23795]: VRRP-MTS: Handling IPv6 Change 7: Ifindex=0x90100d1, OldIP=0::/0, NewIP=X:X:X:X::70a/125

    2024 Apr 11 01:01:46.421957: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Change: MAC=0000.5e00.0201, OldState='', NewState='Standby'

    2024 Apr 11 01:01:46.421950: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Event: MAC=0000.5e00.0201, Event=Ack Standby, CurrentState=

    2024 Apr 11 01:01:46.421944: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Pathway MAC Event: PathwayID=983043

    2024 Apr 11 01:01:46.421938: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Notifying Pathway MAC Of Async Event: Event='Ack Standby', ErrStr='SUCCESS'

    2024 Apr 11 01:01:46.421932: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: L2fm Alloc Response For MAC: MAC=0000.5e00.0201, Status=0x0, ErrStr='SUCCESS'

    2024 Apr 11 01:01:46.421911: E_DEBUG vrrpv3 [23795]: VRRP-MTS: L2fm Alloc Response: RRToken=0x2f99cd, NumMessages=1, OverallStatus=0x0

    2024 Apr 11 01:01:46.419597: E_DEBUG vrrpv3 [23795]: VRRS Vlan209: [vrrpVlan209v61 tag] Installing ICMPv6 Entry For: VIP=X::X:X:X:297, Flag=0x3

    2024 Apr 11 01:01:46.419574: E_DEBUG vrrpv3 [23795]: VRRS Vlan209: [vrrpVlan209v61 tag] Deactivating VIP6, That Was In State: VIP=X::X:X:X:297, State='Shutdown'

    2024 Apr 11 01:01:46.419515: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Change: MAC=0000.5e00.0201, OldState='Reserved', NewState=''

    2024 Apr 11 01:01:46.419463: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Current MAC State Event: MAC=0000.5e00.0201, Event=Request Standby, CurrentState=Reserved

    2024 Apr 11 01:01:46.419454: E_DEBUG vrrpv3 [23795]: VRRS Vlan209 [vrrpVlan209v61 tag]: Pathway MAC Event: PathwayID=983043
    Switch1#

    Switch 2:

    Switch2# show vrrpv3 internal event-history debugs

    2024 Apr 11 00:57:40.234767: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 state change: Active Wait -> Active

    2024 Apr 11 00:57:40.234752: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 State event Ack Active, Current state Active Wait

    2024 Apr 11 00:57:40.234744: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] pw id val is(983043)


    2024 Apr 11 00:57:40.234736: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Notifying pathway mac of async event: Ack Active, status SUCCESS

    2024 Apr 11 00:57:40.234728: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] fx_macdb_handle_l2fm_alloc :: Alloc response for MAC 0000.5e00.0201 status = 0 error(SUCCESS)

    2024 Apr 11 00:57:40.234694: E_DEBUG VRRP-MTS: L2FM alloc resp: rrtoken 0x3ba768, msgs 1, overall status 0

    2024 Apr 11 00:57:40.229355: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] installing icmpv6 entry for vip X::X:X:X:297 flag 0x3

    2024 Apr 11 00:57:40.229329: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] activating vip6 X::X:X:X:297, that was in 'Inactive' state

    2024 Apr 11 00:57:40.229251: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 state change: Standby -> Active Wait

    2024 Apr 11 00:57:40.229195: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 State event Request Active, Current state Standby

    2024 Apr 11 00:57:40.229184: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] pw id val is(983043)


    2024 Apr 11 00:57:36.813093: E_DEBUG VRRP-MTS: Received IM_PHY_LINK_STATE_CHANGE(down) for 0x1a006400

    2024 Apr 11 00:54:11.763596: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 state change: -> Standby

    2024 Apr 11 00:54:11.763587: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 State event Ack Standby, Current state

    2024 Apr 11 00:54:11.763580: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] pw id val is(983043)


    2024 Apr 11 00:54:11.763572: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Notifying pathway mac of async event: Ack Standby, status SUCCESS

    2024 Apr 11 00:54:11.763564: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] fx_macdb_handle_l2fm_alloc :: Alloc response for MAC 0000.5e00.0201 status = 0 error(SUCCESS)

    2024 Apr 11 00:54:11.763533: E_DEBUG VRRP-MTS: L2FM alloc resp: rrtoken 0x3b791e, msgs 1, overall status 0

    2024 Apr 11 00:54:11.758782: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] installing icmpv6 entry for vip X::X:X:X:297 flag 0x3

    2024 Apr 11 00:54:11.758757: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] de-activating vip6 X::X:X:X:297, that was in 'Active' state

    2024 Apr 11 00:54:11.758685: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 state change: Active ->

    2024 Apr 11 00:54:11.758637: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 State event Request Standby, Current state Active

    2024 Apr 11 00:54:11.758626: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] pw id val is(983043)


    2024 Apr 11 00:54:06.643584: E_DEBUG VRRP-MTS: L2_PROTO_CHANGE: intf 0x1a006400 entering L2

    2024 Apr 11 00:54:06.616851: E_DEBUG VRRP-MTS: Received IM_PHY_LINK_STATE_CHANGE(up) for 0x1a006400

    2024 Apr 11 00:52:11.216190: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 state change: Active Wait -> Active

    2024 Apr 11 00:52:11.216182: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 State event Ack Active, Current state Active Wait

    2024 Apr 11 00:52:11.216174: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] pw id val is(983043)


    2024 Apr 11 00:52:11.216167: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Notifying pathway mac of async event: Ack Active, status SUCCESS

    2024 Apr 11 00:52:11.216159: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] fx_macdb_handle_l2fm_alloc :: Alloc response for MAC 0000.5e00.0201 status = 0 error(SUCCESS)

    2024 Apr 11 00:52:11.216125: E_DEBUG VRRP-MTS: L2FM alloc resp: rrtoken 0x3b3bc5, msgs 1, overall status 0

    2024 Apr 11 00:52:11.210932: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] installing icmpv6 entry for vip X::X:X:X:297 flag 0x3

    2024 Apr 11 00:52:11.210906: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] activating vip6 X::X:X:X:297, that was in 'Inactive' state

    2024 Apr 11 00:52:11.210828: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 state change: Standby -> Active Wait

    2024 Apr 11 00:52:11.210773: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] Current MAC 0000.5e00.0201 State event Request Active, Current state Standby

    2024 Apr 11 00:52:11.210762: E_DEBUG VRRS Vlan209 [vrrpVlan209v61 tag] pw id val is(983043)


    2024 Apr 11 00:52:08.025681: E_DEBUG VRRP-MTS: Received IM_PHY_LINK_STATE_CHANGE(down) for 0x1a006400


    Switch2#

    4) Ethanalyzer muestra los anuncios VRRP. Los anuncios VRRP sólo los realiza el switch principal. La dirección de multidifusión para VRRPv3 es ff02::12.

    Switch 1:

    Switch1# ethanalyzer local interface inband display-filter "vrrp.adver_int" limit-captured-frames 0
    Capturing on inband
    2024-04-11 14:07:50.050745 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:50.967333 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:51.861690 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:52.809845 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:53.700778 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:54.693008 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)

    6 packets captured
    Switch1#


    Switch 2:

    Switch2# ethanalyzer local interface inband display-filter "vrrp.adver_int" limit-captured-frames 0
    Capturing on inband
    2024-04-11 14:07:49.946663 X::X:X:X:de07 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:50.829985 X::X:X:X:de07 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:51.728800 X::X:X:X:de07 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:52.720034 X::X:X:X:de07 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:53.571038 X::X:X:X:de07 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:07:54.386109 X::X:X:X:de07 -> ff02::12 VRRP Announcement (v3)

    6 packets captured
    Switch2#

    A partir del resultado anterior, ambos switches están enviando sus propios anuncios (dea7 y de07). Esto indica que no hay conectividad entre los dos switches que participan en el mismo grupo VRRPv3.

    Al analizar más a fondo los paquetes generados por VRRPv3, se encuentran detalles sobre la dirección MAC, la prioridad, la versión y la IP.

    Switch 1:

    Ethernet II, Src: ICANNIAN_00:02:01 (00:00:5e:00:02:01), Dst: IPv6mcast_12 (33:33:00:00:00:12)

    Frame 206: 82 bytes on wire (656 bits), 82 bytes captured (656 bits)
    Ethernet II, Src: ICANNIAN_00:02:01 (00:00:5e:00:02:01), Dst: IPv6mcast_12 (33:33:00:00:00:12)
    Internet Protocol Version 6, Src: X::X:X:X:dea7, Dst: ff02::12
    Virtual Router Redundancy Protocol
    Version 3, Packet type 1 (Advertisement)
    Virtual Rtr ID: 1
    Priority: 200 (Default priority for a backup VRRP router)
    Addr Count: 1
    0000 .... = Reserved: 0
    .... 0000 0110 0100 = Adver Int: 100
    Checksum: 0xb912 [correct]
    [Checksum Status: Good]
    IPv6 Address: X::X:X:X:297


    Switch 2:


    Frame 82: 78 bytes on wire (624 bits), 78 bytes captured (624 bits)


    Ethernet II, Src: ICANNIAN_00:02:01 (00:00:5e:00:02:01), Dst: IPv6mcast_12 (33:33:00:00:00:12)

    Frame 82: 78 bytes on wire (624 bits), 78 bytes captured (624 bits)
    Ethernet II, Src: ICANNIAN_00:02:01 (00:00:5e:00:02:01), Dst: IPv6mcast_12 (33:33:00:00:00:12)
    Internet Protocol Version 6, Src: X::X:X:X:de07, Dst: ff02::12
    Virtual Router Redundancy Protocol
    Version 3, Packet type 1 (Advertisement)
    Virtual Rtr ID: 1
    Priority: 100 (Default priority for a backup VRRP router)
    Addr Count: 1
    0000 .... = Reserved: 0
    .... 0000 0110 0100 = Adver Int: 100
    Checksum: 0xb912 [correct]
    [Checksum Status: Good]
    IPv6 Address: X::X:X:X:297

    5) Una vez resuelto el problema de conectividad, que en este caso era que la interfaz de capa 2 estaba en estado de apagado aunque la SVI estaba en estado activo, los switches ahora deben mostrar el estado correcto (primario y de respaldo respectivamente) y los anuncios sólo los envía el switch primario.

    Switch 1:

    Switch1# show vrrpv3


    Vlan209 - Group 1 - Address-Family IPv6
    State is Primary
    State duration 13 hours 42 mins 46 secs
    Virtual IP address is X::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 200, (Configured 200)
    Primary Router is X::X:X:X:dea7 (local), priority is 200
    Primary Advertisement interval is 1000 msec (expires in 118 msec)
    Primary Down interval is unknown

    Switch1#
    Switch1#

    Switch1# ethanalyzer local interface inband display-filter "vrrp" limit-captured-frames 0
    Capturing on inband
    2024-04-11 14:48:48.125754 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:48.125794 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:49.002998 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:49.003035 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:49.983749 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:49.983782 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)

    6 packets captured
    Switch1#

    Se activa un ELAM en el switch principal que muestra las direcciones MAC correctas cuando señala a la dirección multicast para VRRPv3:

    Switch1(TAH-elam-insel6)# set outer ipv6 src_ip fe80::6a9e:bff:feaa:dea7 dst_ip ff02::12
    Switch1(TAH-elam-insel6)# start
    Switch1(TAH-elam-insel6)# report
    HOMEWOOD ELAM REPORT SUMMARY
    slot - 1, asic - 0, slice - 0
    ============================

    Incoming Interface: sup-eth
    Src Idx : 0x0, Src BD : 209
    Outgoing Interface Info: met_ptr 0

    Packet Type: IPv6

    Dst MAC address: 33:33:00:00:00:12
    Src MAC address: 00:00:5E:00:02:01

    Dst IPv6 address: FF02:0000:0000:0000:0000:0000:0000:0012
    Src IPv6 address: FE80:0000:0000:0000:6A9E:0BFF:FEAA:DEA7
    Ver = 6, Pkt len = 40, Payload_length = 4

    L4 Protocol : 112

    Drop Info:
    ----------

    LUA:
    LUB:
    LUC:
    LUD:
    Final Drops:

    vntag:
    vntag_valid : 0
    vntag_vir : 0
    vntag_svif : 0

    Switch1(TAH-elam-insel6)#


    Switch 2:

    Switch2# show vrrpv3


    Vlan209 - Group 1 - Address-Family IPv6
    State is BACKUP
    State duration 1.538 secs
    Virtual IP address is X::X:X:X:297
    Virtual MAC address is 0000.5e00.0201
    Advertisement interval is 1000 msec
    Preemption enabled
    Priority is 100, (Configured 100)
    Primary Router is X::X:X:X:dea7, priority is 200
    Primary Advertisement interval is 1000 msec (learned)
    Primary Down interval is 3609 msec (expires in 2886 msec)

    Switch2#


    Switch2# ethanalyzer local interface inband display-filter "vrrp" limit-captured-frames 0
    Capturing on inband
    2024-04-11 14:48:48.082516 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:48.959735 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)
    2024-04-11 14:48:49.940504 X::X:X:X:dea7 -> ff02::12 VRRP Announcement (v3)

    3 packets captured
    Switch2#

    El anuncio se puede ver en el dispositivo de respaldo cuando se ejecuta un ELAM. El anuncio proviene del switch principal (X::X:X:X:dea7) y se está recibiendo en la interfaz entrante correcta que es ethernet 1/51


    Switch2# show hardware internal tah interface e1/51
    #########################################
    IfIndex: 0x1a006400
    DstIndex: 5944
    IfType: 26
    Asic: 0
    Asic: 0
    AsicPort: 60
    SrcId: 120
    Slice: 0
    PortOnSlice: 60
    Table entries for interface Ethernet1/51

    Switch2(TAH-elam)# trigger init asic 0 slice 0 in-select 6 out-select 0 use-src-id 120
    Switch2(TAH-elam-insel6)# set outer ipv6 src_ip X::X:X:X:dea7
    Switch2(TAH-elam-insel6)# start
    Switch2(TAH-elam-insel6)# report
    HOMEWOOD ELAM REPORT SUMMARY
    slot - 1, asic - 0, slice - 0
    ============================

    Incoming Interface: Eth1/51
    Src Idx : 0xc9, Src BD : 209
    Outgoing Interface Info: met_ptr 0

    Packet Type: IPv6

    Dst MAC address: 33:33:00:00:00:12
    Src MAC address: 00:00:5E:00:02:01
    .1q Tag0 VLAN: 209, cos = 0x6

    Sup hit: 1, Sup Idx: 3344

    Dst IPv6 address: FF02:0000:0000:0000:0000:0000:0000:0012
    Src IPv6 address: X:X:X:X:X:X:X:DEA7
    Ver = 6, Pkt len = 24, Payload_length = 4

    L4 Protocol : 112

    Drop Info:
    ----------

    LUA:
    LUB:
    LUC:
    LUD:
    Final Drops:

    vntag:
    vntag_valid : 0
    vntag_vir : 0
    vntag_svif : 0

    Switch2(TAH-elam-insel6)#

    Información Relacionada

    Configuración de VRRPv3

    Etanizador

    Historial de revisiones

    Revisión Fecha de publicación Comentarios
    1.0
    15-Apr-2024
    Versión inicial
    TAC Authored

    Con la colaboración de ingenieros de Cisco

    • Angel Romero
      Ingeniero de consultoría técnica

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