IPv6に関するVRRPv3関連の問題のトラブルシューティング

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Updated: 2024 年 4 月 15 日
Document ID:221889

偏向のない言語

この製品のドキュメントセットは、偏向のない言語を使用するように配慮されています。このドキュメントセットでの偏向のない言語とは、年齢、障害、性別、人種的アイデンティティ、民族的アイデンティティ、性的指向、社会経済的地位、およびインターセクショナリティに基づく差別を意味しない言語として定義されています。製品ソフトウェアのユーザインターフェイスにハードコードされている言語、RFP のドキュメントに基づいて使用されている言語、または参照されているサードパーティ製品で使用されている言語によりドキュメントに例外が存在する場合があります。シスコのインクルーシブ ランゲージの取り組みの詳細は、こちらをご覧ください。

翻訳について

シスコは世界中のユーザにそれぞれの言語でサポート コンテンツを提供するために、機械と人による翻訳を組み合わせて、本ドキュメントを翻訳しています。ただし、最高度の機械翻訳であっても、専門家による翻訳のような正確性は確保されません。シスコは、これら翻訳の正確性について法的責任を負いません。原典である英語版（リンクからアクセス可能）もあわせて参照することを推奨します。

    はじめに

    このドキュメントでは、Nexus 9000でIPv6を使用して仮想ルータ冗長プロトコルバージョン3(VRRPv3)をトラブルシューティングする手順について説明します。

    前提条件

    要件

    Cisco NXOS®では、次の項目に関する知識があることが推奨されます。

    • VRRP
    • Ethanalyzer
    • IPv6
    • ファーストホップ冗長プロトコル(FHRP)

    使用するコンポーネント

    このドキュメントは、Nexus 9000などの特定のハードウェアに限定されます。

    このドキュメントの情報は、特定のラボ環境にあるデバイスに基づいて作成されました。このドキュメントで使用するすべてのデバイスは、クリアな（デフォルト）設定で作業を開始しています。本稼働中のネットワークでは、各コマンドによって起こる可能性がある影響を十分確認してください。

    背景説明

    VRRPバージョン2はIPv4アドレスファミリのみをサポートしますが、VRRPバージョン3(VRRP3)はIPv4とIPv6の両方のアドレスファミリをサポートします。NX-OSでは、VRRPとVRRPv3の両方を同じデバイスで有効にすることはできません。機能VRRPがNexusスイッチですでに有効になっている場合、機能VRRPv3を有効にすると、VRRPv2がすでに有効であることを示すエラーが表示されます。したがって、VRRPからVRRPv3への移行を実行する必要があります。これにより、サービスへの影響を最小限に抑えることができます。

    トポロジ

    トポロジ

     

    note-icon

    注：仮想ポートチャネル(VPC)環境はありません。

     

    確認

    1)両側の設定が一致していることを確認します。

    スイッチ 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) MACアドレステーブルにデータが正しく取り込まれていることを確認します。

    スイッチ 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)グループに参加しているデバイスのステータスを確認します。

    スイッチ 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#

    トラブルシュート

    壊れたシナリオ。

    show vrrpv3 briefコマンドオプションは、グループ番号、アドレスファミリ、プライオリティ、プリエンプション、状態、プライマリアドレス、グループアドレス（仮想グループIP）など、グループに関する簡単な情報を表示します。この例と上記で説明したように、両方のスイッチはプライマリであり、正しくありません。

    スイッチ 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) show vrrpv3 detailコマンドは、VRRPv3に対して送受信されたアドバタイズメント、仮想MACアドレス、エラーや遷移状態に関連するその他の統計情報など、追加情報を表示します。たとえば、受信されたVRRPv3アドバタイズメントは増加しません。

    スイッチ 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) show vrrpv3 internal event-history debugsコマンドは、VRRPv3参加者が経ったさまざまな段階に関する情報を表示します。

    スイッチ 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がVRRPアナウンスを表示します。VRRPアナウンスはプライマリスイッチによってのみ実行されます。VRRPv3のマルチキャストアドレスはff02::12です。

    スイッチ 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#

    上記の出力から、両方のスイッチが自身のアドバタイズメント（dea7およびde07）を送信しています。これは、同じVRRPv3グループに参加している2つのスイッチ間に接続がないことを示しています。

    VRRPv3によって生成されたパケットを詳しく調べると、MACアドレス、プライオリティ、バージョン、およびIPに関する詳細が見つかります。

    スイッチ 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)接続の問題が解決した場合（この場合、SVIがアップ状態であってもレイヤ2インターフェイスはシャットダウン状態でした）、スイッチは正しい状態（プライマリおよびバックアップ）を示す必要があり、アドバタイズメントはプライマリスイッチによってのみ送信されます。

    スイッチ 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#

    ELAMは、VRRPv3のマルチキャストアドレスを指すときに正しいMACアドレスを示すプライマリスイッチでトリガーされます。

    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#

    アドバタイズメントは、ELAMの実行時にバックアップデバイスで確認できます。アドバタイズメントはプライマリスイッチ(X::X:X:X:X:dea7)から送信され、正しい着信インターフェイス（イーサネット1/51）で受信されています


    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)#

    関連情報

    VRRPv3の設定

    Ethanalyzer

    更新履歴

    改定 発行日 コメント
    1.0
    15-Apr-2024
    初版
    TAC Authored

    シスコ エンジニア提供

    • エンジェルロメロ
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