Problemen met VRRPv3 oplossen bij IPv6

Bijgewerkt:15 april 2024
Document-id:221889

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    Inleiding

    Dit document beschrijft de stappen voor het oplossen van problemen met Virtual Router Redundancy Protocol, versie 3 (VRRPv3) met IPv6 in Nexus 9000.

    Voorwaarden

    Vereisten

    Cisco NXOS® raadt u aan kennis te hebben van deze onderwerpen:

    • VRRP
    • Ethanalyzer
    • IPv6-server
    • First Hop Redundancy Protocol (FHRP)

    Gebruikte componenten

    Dit document is beperkt tot specifieke hardware zoals Nexus 9000.

    De informatie in dit document is gebaseerd op de apparaten in een specifieke laboratoriumomgeving. Alle apparaten die in dit document worden beschreven, hadden een opgeschoonde (standaard)configuratie. Als uw netwerk live is, moet u zorgen dat u de potentiële impact van elke opdracht begrijpt.

    Achtergrondinformatie

    VRRP versie 2 heeft alleen ondersteuning voor de IPv4 adresfamilie, maar VRRP versie 3 (VRRP3) heeft ondersteuning voor zowel IPv4 als IPv6 adresfamilies. Op NX-OS kunnen VRRP en VRRPv3 niet op hetzelfde apparaat worden ingeschakeld. Als de functie VRRP al is ingeschakeld op de Nexus switch, geeft het inschakelen van de functie VRRPv3 een foutmelding die aangeeft dat VRRPv2 al is ingeschakeld. Daarom moet een migratie van VRRP naar VRRPv3 worden uitgevoerd, wat een minimale impact op de diensten heeft.

    Topologie

    Topologie

     

    pictogram van opmerking

    Opmerking: geen Virtual Port-Channel (VPC)-omgeving.

     

    Verifiëren

    1) Controleer de configuratie aan beide kanten.

    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) Controleer of de MAC-adrestabel correct is ingevuld.

    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) Controleer de status van de apparaten die deel uitmaken van de groep.

    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#

    Problemen oplossen

    Verbroken scenario.

    1) De korte opdrachtoptie vrrpv3 van de show toont de korte informatie over de groep, zoals groepsnummer, adresfamilie, prioriteit, voorrang, staat, primery adres en groepsadres (dat is de virtuele groep IP). In dit voorbeeld, en zoals hierboven beschreven, zijn beide switches de belangrijkste die niet juist is.

    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) De show vrpv3 detail opdracht geeft aanvullende informatie weer, zoals advertenties verzonden en ontvangen voor VRRPv3, virtueel MAC-adres en andere statistieken met betrekking tot fouten en transitiestaten. Bijvoorbeeld, VRRPv3 advertenties ontvangen niet stijgt.

    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) De show vrpv3 interne gebeurtenis-geschiedenis debugs bevel toont informatie over de verschillende stadia de VRRPv3 deelnemer is gegaan door.

    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 toont de aankondigingen van de VRRP. VRRP-aankondigingen worden alleen gedaan door de eerste switch. Multicastadres voor VRRPv3 is 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#

    Van de output hierboven, verzenden beide switches hun eigen reclame (dea7 en de07). Dat is een indicatie dat er geen connectiviteit is tussen de twee switches die deelnemen aan dezelfde VRRPv3-groep.

    Als u de pakketten die door VRRPv3 worden gegenereerd, nader bekijkt, vindt u details over MAC-adres, prioriteit, versie en 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) Zodra het connectiviteitsprobleem is opgelost, dat in dit geval was dat de Layer 2-interface in een shutdown-staat was, ook al was de SVI in een up-staat, moeten de switches nu de juiste staat tonen (primair en back-up respectievelijk) en de advertenties worden alleen verzonden door de switch.

    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#

    Een ELAM wordt geactiveerd in de Primaire switch die de juiste MAC-adressen laat zien bij het aanwijzen naar het multicast-adres voor 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#

    De advertentie kan op het reserveapparaat worden gezien wanneer het runnen van een ELAM. De advertentie komt van de belangrijkste switch (X::X:X:X:dea7) en wordt ontvangen in de juiste inkomende interface die Ethernet 1/51 is


    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)#

    Gerelateerde informatie

    VRRPv3 configureren

    Ethanalyzer

    Revisiegeschiedenis

    Revisie Publicatiedatum Opmerkingen
    1.0
    15-Apr-2024
    Eerste vrijgave
    TAC Authored

    Bijgedragen door Cisco-engineers

    • Angel Romero
      Technisch adviseur-engineer

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