목차

소개

사전 요구 사항

요구 사항

사용되는 구성 요소

토폴로지 개요

BFD 상태

시나리오

시나리오 1. 플랩-이유:bfd-deleted

시나리오 2. 플랩-이유:시간 초과

시나리오 3. 플랩-이유:na

시나리오 4. 플랩-이유:원격 다운

관련 정보

소개

이 문서에서는 Cisco vEdge 라우터의 다양한 BFD(Bidirectional Forwarding Detection) 플랩 사유에 대해 설명합니다.

사전 요구 사항

요구 사항

Cisco는 Cisco SDWAN 솔루션에 대한 지식을 보유하고 있는 것이 좋습니다.

사용되는 구성 요소

이 문서는 19.2.1을 실행하는 Cisco 클라우드 vEdge 라우터를 기반으로 합니다.

이 문서의 정보는 특정 랩 환경의 디바이스를 토대로 작성되었습니다.이 문서에 사용된 모든 디바이스는 초기화된(기본) 컨피그레이션으로 시작되었습니다.네트워크가 작동 중인 경우 모든 명령의 잠재적인 영향을 이해해야 합니다.

토폴로지 개요

이 문서는 특정 토폴로지로 제한되지 않습니다.

이 문서에서 일부 중요한 구성 요소의 IP 주소 및 색상:

구성 요소

시스템-IP

VPN 0 IP/색상

VPN 0 IP/색상

VEDGE-1

10.13.13.13

192.168.1.4 / mpls

192.168.2.4 / mpls

VEDGE-2

10.15.15.15

192.168.1.8 / 비즈니스 인터넷

192.168.2.8 / 비즈니스 인터넷

vSmart

10.8.8.8

192.168.1.3 / 기본값

해당 없음

vManage

10.7.7.7

192.168.1.1 / 기본값

해당 없음

BFD 상태

Cisco vEdge 라우터에서 가능한 'flap-reason' 값은 다음과 같습니다.

1.bfd-deleted - 컨트롤 플레인이 삭제했으므로 BFD가 다운됩니다.

BFD가 삭제되면 두 개의 알림을 발생시킵니다.하나는 BFD가 다운되고 하나는 BFD가 삭제될 때 발생합니다.

2. 시간 초과 - 원격 끝으로부터 BFD 응답이 없습니다.

3. 원격 다운 - 원격 엔드가 BFD 패킷을 전송했으며, 이 패킷은 down-state.4로 이동했음을 나타냅니다.

4.na - 해당 없음이 설정은 BFD 세션이 처음 생성될 때와 BFD 세션이 시작될 때 설정됩니다.

시나리오

시나리오 1. 플랩-이유:bfd-deleted

VEDGE-1 라우터에서 포트 홉을 수행하고 다음 시나리오를 재현합니다.

HUB-1# request port-hop color biz-internet

VEDGE-1# show log tail -f /var/log/tmplog/vdebug

local7.debug: Mar 20 09:29:21 VEDGE-1 VDAEMON[1136]: vdaemon_disable_my_tloc[1308]: %VDAEMON_DBG_EVENTS-1: Disabling tloc ge0_1.

local7.debug: Mar 20 09:29:21 VEDGE-1 VDAEMON[1136]: vdaemon_send_tloc_info[8282]: %VDAEMON_DBG_MISC-1: Sending TLOC: ifname:ge0_1 color:biz-internet spi:1499 smarts:1 manages:1 state:DOWN LR encap: 0 LR hold time : 7000 Pairwise-Keys Disabled  key-id 0

local7.info: Mar 20 09:29:21 VEDGE-1 VDAEMON[1136]: %Viptela-VEDGE-1-vdaemon-6-INFO-1400002: Notification: 3/20/2020 9:29:21 control-connection-state-change severity-level:major host-name:"VEDGE-1" system-ip:10.13.13.13 personality:vEdge peer-type:vsmart peer-system-ip:10.8.8.8 peer-vmanage-system-ip:0.0.0.0 public-ip:192.168.1.3 public-port:12946 src-color:biz-internet remote-color:default uptime:"0:00:35:57" new-state:down

local7.info: Mar 20 09:29:21 VEDGE-1 VDAEMON[1136]: %Viptela-VEDGE-1-vdaemon-6-INFO-1400002: Notification: 3/20/2020 9:29:21 control-connection-state-change severity-level:major host-name:"VEDGE-1" system-ip:10.13.13.13 personality:vEdge peer-type:vmanage peer-system-ip:10.7.7.7 peer-vmanage-system-ip:0.0.0.0 public-ip:192.168.1.1 public-port:12946 src-color:biz-internet remote-color:mpls uptime:"0:01:56:34" new-state:down

local7.info: Mar 20 09:29:21 VEDGE-1 FTMD[1126]: %Viptela-VEDGE-1-ftmd-6-INFO-1400002: Notification: 3/20/2020 9:29:21 bfd-state-change severity-level:major host-name:"VEDGE-1" system-ip:10.13.13.13 src-ip:192.168.2.4 dst-ip:192.168.1.6 proto:ipsec src-port:12406 dst-port:12347 local-system-ip:10.13.13.13 local-color:"biz-internet" remote-system-ip:10.14.14.14 remote-color:"mpls" new-state:down deleted:false flap-reason:bfd-deleted

BFD를 확인하고 비즈니스 인터넷에서 연결 업타임을 제어합니다.

VEDGE-1# show control connections | t

LOCAL    LOCAL                                                                                                                       CFG     V

PEER     SITE  DOMAIN  PRIVATE  PRIVATE  PUBLIC    PUBLIC  SYSTEM                                         PRIVATE   PRIVATE                     CONTROLLER  SYSTEM  ORG   BEHIND

INSTANCE  TYPE     ID    ID      IP       PORT     IP        PORT    IP       PROTOCOL  LOCAL COLOR   REMOTE COLOR  IP        PORT     STATE  UPTIME      GROUP ID    IP      NAME  PROXY

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

0         vsmart   8     1       192.168.1.4  12366    192.168.1.3   12946   10.8.8.8  dtls      mpls          default       192.168.1.3   12946    up     0:00:03:47  0           -       -     No

0         vsmart   8     1       192.168.2.4  12426    192.168.1.3   12946   10.8.8.8  dtls      biz-internet  default       192.168.1.3   12946    up     0:00:01:52  0           -       -     No

0         vbond    0     0       192.168.1.4  12366    192.168.1.10  12346   0.0.0.0  dtls       mpls          mpls          192.168.1.10  12346    up     0:00:03:47  0           -       -     -

0         vbond    0     0       192.168.2.4  12426    192.168.1.10  12346   0.0.0.0  dtls       biz-internet  biz-internet  192.168.1.10  12346    up     0:00:00:31  0           -       -     -

0         vmanage  8     0       192.168.2.4  12426    192.168.1.1   12946   10.7.7.7  dtls      biz-internet  mpls          192.168.1.1   12946    up     0:00:01:52  0           -       -     No

VEDGE-1# sh bfd sess | t

SRC    DST                 SITE                                     DETECT      TX

SRC IP   DST IP    PROTO  PORT   PORT   SYSTEM IP    ID    LOCAL COLOR   COLOR         STATE  MULTIPLIER  INTERVAL  UPTIME      TRANSITIONS

---------------------------------------------------------------------------------------------------------------------------------------------

192.168.1.4  192.168.1.6   ipsec  12366  12347  10.14.14.14  14    mpls          mpls          up     7           1000      0:00:03:48  0

192.168.1.4  192.168.2.6   ipsec  12366  12387  10.14.14.14  14    mpls          biz-internet  up     7           1000      0:00:03:48  0

192.168.2.4  192.168.1.6   ipsec  12426  12347  10.14.14.14  14    biz-internet  mpls          up     7           1000      0:00:01:55  0

192.168.2.4  192.168.2.6   ipsec  12426  12387  10.14.14.14  14    biz-internet  biz-internet  up     7           1000      0:00:01:55  0

192.168.1.4  192.168.1.8   ipsec  12366  12406  10.15.15.15  15    mpls          mpls          up     7           1000      0:00:03:48  0

192.168.1.4  192.168.2.8   ipsec  12366  12366  10.15.15.15  15    mpls          biz-internet  up     7           1000      0:00:03:48  0

192.168.2.4  192.168.1.8   ipsec  12426  12406  10.15.15.15  15    biz-internet  mpls          up     7           1000      0:00:01:55  0

192.168.2.4  192.168.2.8   ipsec  12426  12366  10.15.15.15  15    biz-internet  biz-internet  up     7           1000      0:00:01:55  0

192.168.1.4  192.168.1.11  ipsec  12366  12346  10.16.16.16  16    mpls          mpls          up     7           1000      0:00:03:48  0

192.168.1.4  192.168.2.11  ipsec  12366  12426  10.16.16.16  16    mpls          biz-internet  up     7           1000      0:00:03:48  0

192.168.2.4  192.168.1.11  ipsec  12426  12346  10.16.16.16  16    biz-internet  mpls          up     7           1000      0:00:01:55  0

192.168.2.4  192.168.2.11  ipsec  12426  12426  10.16.16.16  16    biz-internet  biz-internet  up     7           1000      0:00:01:55  0

192.168.1.4  192.168.1.12  ipsec  12366  12426  10.17.17.17  17    mpls          mpls          up     7           1000      0:00:03:48  0

192.168.1.4  192.168.2.12  ipsec  12366  12406  10.17.17.17  17    mpls          biz-internet  up     7           1000      0:00:03:48  0

192.168.2.4  192.168.1.12  ipsec  12426  12426  10.17.17.17  17    biz-internet  mpls          up     7           1000      0:00:01:55  0

192.168.2.4  192.168.2.12  ipsec  12426  12406  10.17.17.17  17    biz-internet  biz-internet  up     7           1000      0:00:01:55  0

192.168.1.4  192.168.1.14  ipsec  12366  12426  10.18.18.18  18    mpls          mpls          up     7           1000      0:00:03:48  0

192.168.1.4  192.168.2.14  ipsec  12366  12426  10.18.18.18  18    mpls          biz-internet  up     7           1000      0:00:03:48  0

192.168.2.4  192.168.1.14  ipsec  12426  12426  10.18.18.18  18    biz-internet  mpls          up     7           1000      0:00:01:55  0

192.168.2.4  192.168.2.14  ipsec  12426  12426  10.18.18.18  18    biz-internet  biz-internet  up     7           1000      0:00:01:55  0

192.168.1.4  192.168.3.40  ipsec  12366  12366  10.19.19.19  19    mpls          mpls          up     7           1000      0:00:03:48  0

192.168.1.4  192.168.4.40  ipsec  12366  12366  10.19.19.19  19    mpls          biz-internet  up     7           1000      0:00:03:48  0

192.168.2.4  192.168.3.40  ipsec  12426  12366  10.19.19.19  19    biz-internet  mpls          up     7           1000      0:00:01:55  0

192.168.2.4  192.168.4.40  ipsec  12426  12366  10.19.19.19  19    biz-internet  biz-internet  up     7           1000      0:00:01:55  0

VEDGE-1에서 제어 연결을 지워 이 시나리오를 테스트할 수도 있습니다(TLOC도 비활성화).

local1.info: Mar 20 09:34:20 VEDGE-1 confd[897]: audit user: admin/60155 CLI 'clear control connections'

local7.info: Mar 20 09:34:20 VEDGE-1 VDAEMON[1136]: %Viptela-VEDGE-1-vdaemon-6-INFO-1400002: Notification: 3/20/2020 9:34:20 control-connection-state-change severity-level:major host-name:"VEDGE-1" system-ip:10.13.13.13 personality:vEdge peer-type:vsmart peer-system-ip:10.8.8.8 peer-vmanage-system-ip:0.0.0.0 public-ip:192.168.1.3 public-port:12946 src-color:biz-internet remote-color:default uptime:"0:00:00:51" new-state:down

local7.info: Mar 20 09:34:20 VEDGE-1 VDAEMON[1136]: %Viptela-VEDGE-1-vdaemon-6-INFO-1400002: Notification: 3/20/2020 9:34:20 control-connection-state-change severity-level:major host-name:"VEDGE-1" system-ip:10.13.13.13 personality:vEdge peer-type:vmanage peer-system-ip:10.7.7.7 peer-vmanage-system-ip:0.0.0.0 public-ip:192.168.1.1 public-port:12946 src-color:biz-internet remote-color:mpls uptime:"0:00:01:09" new-state:down

local7.info: Mar 20 09:34:20 VEDGE-1 FTMD[1126]: %Viptela-VEDGE-1-ftmd-6-INFO-1400002: Notification: 3/20/2020 9:34:20 bfd-state-change severity-level:major host-name:"VEDGE-1" system-ip:10.13.13.13 src-ip:192.168.2.4 dst-ip:192.168.1.6 proto:ipsec src-port:12426 dst-port:12347 local-system-ip:10.13.13.13 local-color:"biz-internet" remote-system-ip:10.14.14.14 remote-color:"mpls" new-state:down deleted:false flap-reason:bfd-deleted

이번에는 mpls 및 biz-internet 색상의 가동 시간을 확인합니다.

VEDGE-1# sh bfd sess | t

SRC    DST                 SITE                                     DETECT      TX

SRC IP   DST IP    PROTO  PORT   PORT   SYSTEM IP    ID    LOCAL COLOR   COLOR         STATE  MULTIPLIER  INTERVAL  UPTIME      TRANSITIONS

---------------------------------------------------------------------------------------------------------------------------------------------

192.168.1.4  192.168.1.6   ipsec  12366  12347  10.14.14.14  14    mpls          mpls          up     7           1000      0:00:01:37  2

192.168.1.4  192.168.2.6   ipsec  12366  12387  10.14.14.14  14    mpls          biz-internet  up     7           1000      0:00:01:37  2

192.168.2.4  192.168.1.6   ipsec  12426  12347  10.14.14.14  14    biz-internet  mpls          up     7           1000      0:00:01:55  2

192.168.2.4  192.168.2.6   ipsec  12426  12387  10.14.14.14  14    biz-internet  biz-internet  up     7           1000      0:00:01:55  2

192.168.1.4  192.168.1.8   ipsec  12366  12406  10.15.15.15  15    mpls          mpls          up     7           1000      0:00:01:37  2

192.168.1.4  192.168.2.8   ipsec  12366  12366  10.15.15.15  15    mpls          biz-internet  up     7           1000      0:00:01:37  2

192.168.2.4  192.168.1.8   ipsec  12426  12406  10.15.15.15  15    biz-internet  mpls          up     7           1000      0:00:01:55  2

192.168.2.4  192.168.2.8   ipsec  12426  12366  10.15.15.15  15    biz-internet  biz-internet  up     7           1000      0:00:01:55  2

192.168.1.4  192.168.1.11  ipsec  12366  12346  10.16.16.16  16    mpls          mpls          up     7           1000      0:00:01:37  2

192.168.1.4  192.168.2.11  ipsec  12366  12426  10.16.16.16  16    mpls          biz-internet  up     7           1000      0:00:01:37  2

192.168.2.4  192.168.1.11  ipsec  12426  12346  10.16.16.16  16    biz-internet  mpls          up     7           1000      0:00:01:55  2

192.168.2.4  192.168.2.11  ipsec  12426  12426  10.16.16.16  16    biz-internet  biz-internet  up     7           1000      0:00:01:55  2

192.168.1.4  192.168.1.12  ipsec  12366  12426  10.17.17.17  17    mpls          mpls          up     7           1000      0:00:01:37  2

192.168.1.4  192.168.2.12  ipsec  12366  12406  10.17.17.17  17    mpls          biz-internet  up     7           1000      0:00:01:37  2

192.168.2.4  192.168.1.12  ipsec  12426  12426  10.17.17.17  17    biz-internet  mpls          up     7           1000      0:00:01:55  2

192.168.2.4  192.168.2.12  ipsec  12426  12406  10.17.17.17  17    biz-internet  biz-internet  up     7           1000      0:00:01:55  2

192.168.1.4  192.168.1.14  ipsec  12366  12426  10.18.18.18  18    mpls          mpls          up     7           1000      0:00:01:37  2

192.168.1.4  192.168.2.14  ipsec  12366  12426  10.18.18.18  18    mpls          biz-internet  up     7           1000      0:00:01:37  2

192.168.2.4  192.168.1.14  ipsec  12426  12426  10.18.18.18  18    biz-internet  mpls          up     7           1000      0:00:01:55  2

192.168.2.4  192.168.2.14  ipsec  12426  12426  10.18.18.18  18    biz-internet  biz-internet  up     7           1000      0:00:01:55  2

192.168.1.4  192.168.3.40  ipsec  12366  12366  10.19.19.19  19    mpls          mpls          up     7           1000      0:00:01:37  2

192.168.1.4  192.168.4.40  ipsec  12366  12366  10.19.19.19  19    mpls          biz-internet  up     7           1000      0:00:01:37  2

192.168.2.4  192.168.3.40  ipsec  12426  12366  10.19.19.19  19    biz-internet  mpls          up     7           1000      0:00:01:55  2

192.168.2.4  192.168.4.40  ipsec  12426  12366  10.19.19.19  19    biz-internet  biz-internet  up     7           1000      0:00:01:54  3

VEDGE-1# show control connections | t

LOCAL    LOCAL                                                                                                                       CFG     V

PEER     SITE  DOMAIN  PRIVATE  PRIVATE  PUBLIC    PUBLIC  SYSTEM                                         PRIVATE   PRIVATE                     CONTROLLER  SYSTEM  ORG   BEHIND

INSTANCE  TYPE     ID    ID      IP       PORT     IP        PORT    IP       PROTOCOL  LOCAL COLOR   REMOTE COLOR  IP        PORT     STATE  UPTIME      GROUP ID    IP      NAME  PROXY

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

0         vsmart   8     1       192.168.1.4  12366    192.168.1.3   12946   10.8.8.8  dtls     mpls          default       192.168.1.3   12946    up     0:00:01:41  0           -       -     No

0         vsmart   8     1       192.168.2.4  12426    192.168.1.3   12946   10.8.8.8  dtls     biz-internet  default       192.168.1.3   12946    up     0:00:01:59  0           -       -     No

0         vbond    0     0       192.168.1.4  12366    192.168.1.10  12346   0.0.0.0   dtls     mpls          mpls          192.168.1.10  12346    up     0:00:01:42  0           -       -     -

0         vbond    0     0       192.168.2.4  12426    192.168.1.10  12346   0.0.0.0   dtls     biz-internet  biz-internet  192.168.1.10  12346    up     0:00:00:01  0           -       -     -

0         vmanage  8     0       192.168.2.4  12426    192.168.1.1   12946   10.7.7.7  dtls     biz-internet  mpls          192.168.1.1   12946    up     0:00:01:59  0           -       -     No

시나리오 2. 플랩-이유:시간 초과

언더레이에서 인터페이스를 종료하여 VEDGE-1에서 TLOC(이 경우 Biz-Internet)를 비활성화하여 이 시나리오를 재현할 수 있습니다.

VEDGE-1 측에서 TLOC를 비활성화하기 전에 VEDGE-2에서 BFD 상태:

VEDGE-2# show bfd sessions remote-color mpls system-ip 10.13.13.13 | t

SRC    DST                 SITE                              DETECT      TX

SRC IP   DST IP   PROTO  PORT   PORT   SYSTEM IP    ID    LOCAL COLOR   COLOR  STATE  MULTIPLIER  INTERVAL  UPTIME      TRANSITIONS

-------------------------------------------------------------------------------------------------------------------------------------

192.168.1.8  192.168.1.4  ipsec  12406  12366  10.13.13.13  13    mpls          mpls   up     7           1000      0:00:03:15  2

192.168.2.8  192.168.1.4  ipsec  12366  12366  10.13.13.13  13    biz-internet  mpls   up     7           1000      0:00:03:15  2

문제를 재현한 후 VEDGE-2에 로그인합니다.

local7.info: Mar 20 10:00:04 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 10:0:4 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.1.8 dst-ip:192.168.2.14 proto:ipsec src-port:12406 dst-port:12426 local-system-ip:10.15.15.15 local-color:"mpls" remote-system-ip:10.18.18.18 remote-color:"biz-internet" new-state:down deleted:false flap-reason:timeout

local7.info: Mar 20 10:00:05 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 10:0:4 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.2.8 dst-ip:192.168.4.40 proto:ipsec src-port:12386 dst-port:12366 local-system-ip:10.15.15.15 local-color:"biz-internet" remote-system-ip:10.19.19.19 remote-color:"biz-internet" new-state:down deleted:false flap-reason:timeout

VEDGE-2# show bfd sessions remote-color mpls system-ip 10.13.13.13 | t

SRC    DST                 SITE                              DETECT      TX

SRC IP   DST IP   PROTO  PORT   PORT   SYSTEM IP    ID    LOCAL COLOR   COLOR  STATE  MULTIPLIER  INTERVAL  UPTIME      TRANSITIONS

-------------------------------------------------------------------------------------------------------------------------------------

192.168.1.8  192.168.1.4  ipsec  12406  12366  10.13.13.13  13    mpls          mpls   up     7           1000      0:00:21:56  3

192.168.2.8  192.168.1.4  ipsec  12386  12366  10.13.13.13  13    biz-internet  mpls   down   7           1000      NA          1

시나리오 3. 플랩-이유:na

이전 시나리오에서 언더레이 인터페이스에서 no shut을 수행하여 이 시나리오를 재현할 수 있습니다.

local7.info: Mar 20 10:01:20 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 10:1:18 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.2.8 dst-ip:192.168.1.11 proto:ipsec src-port:12386 dst-port:12346 local-system-ip:10.15.15.15 local-color:"biz-internet" remote-system-ip:10.16.16.16 remote-color:"mpls" new-state:up deleted:false flap-reason:na

local7.info: Mar 20 10:01:20 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 10:1:18 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.1.8 dst-ip:192.168.2.11 proto:ipsec src-port:12406 dst-port:12426 local-system-ip:10.15.15.15 local-color:"mpls" remote-system-ip:10.16.16.16 remote-color:"biz-internet" new-state:up deleted:false flap-reason:na

VEDGE-2# show bfd sessions remote-color mpls system-ip 10.13.13.13 | t

SRC    DST                 SITE                              DETECT      TX

SRC IP   DST IP   PROTO  PORT   PORT   SYSTEM IP    ID    LOCAL COLOR   COLOR  STATE  MULTIPLIER  INTERVAL  UPTIME      TRANSITIONS

-------------------------------------------------------------------------------------------------------------------------------------

192.168.1.8  192.168.1.4  ipsec  12406  12366  10.13.13.13  13    mpls          mpls   up     7           1000      0:00:22:32  3

192.168.2.8  192.168.1.4  ipsec  12386  12366  10.13.13.13  13    biz-internet  mpls   up     7           1000      0:00:00:04  1

시나리오 4. 플랩-이유:원격 다운

특정 색상에 대해 VEDGE-1에서 no control-connections 명령을 사용하여 이 시나리오를 재현할 수 있습니다(이 경우 mpls).

VEDGE-1의 로그:

vpn 0

interface ge0/0

ip address 192.168.1.4/24

tunnel-interface

encapsulation ipsec

color mpls

no control-connections

VEDGE-1# show control connections | t

LOCAL    LOCAL                                                                                                                       CFG     V

PEER     SITE  DOMAIN  PRIVATE  PRIVATE  PUBLIC    PUBLIC  SYSTEM                                         PRIVATE   PRIVATE                     CONTROLLER  SYSTEM  ORG   BEHIND

INSTANCE  TYPE     ID    ID      IP       PORT     IP        PORT    IP       PROTOCOL  LOCAL COLOR   REMOTE COLOR  IP        PORT     STATE  UPTIME      GROUP ID    IP      NAME  PROXY

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

0         vsmart   8     1       192.168.2.4  12426    192.168.1.3   12946   10.8.8.8  dtls      biz-internet  default       192.168.1.3   12946    up     0:00:17:54  0           -       -     No

0         vbond    0     0       192.168.2.4  12426    192.168.1.10  12346   0.0.0.0   dtls      biz-internet  biz-internet  192.168.1.10  12346    up     0:00:02:37  0           -       -     -

0         vmanage  8     0       192.168.2.4  12426    192.168.1.1   12946   10.7.7.7  dtls      biz-internet  mpls          192.168.1.1   12946    up     0:00:22:44  0           -       -     No

VEDGE-2에 대한 로그:

local7.info: Mar 20 11:36:40 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 11:36:40 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.1.8 dst-ip:192.168.1.4 proto:ipsec src-port:12406 dst-port:12406 local-system-ip:10.15.15.15 local-color:"mpls" remote-system-ip:10.13.13.13 remote-color:"mpls" new-state:down deleted:false flap-reason:remote-down

local7.info: Mar 20 11:36:40 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 11:36:40 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.2.8 dst-ip:192.168.1.4 proto:ipsec src-port:12386 dst-port:12406 local-system-ip:10.15.15.15 local-color:"biz-internet" remote-system-ip:10.13.13.13 remote-color:"mpls" new-state:down deleted:false flap-reason:remote-down

local7.info: Mar 20 11:36:41 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 11:36:41 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.1.8 dst-ip:192.168.1.4 proto:ipsec src-port:12406 dst-port:12406 local-system-ip:10.15.15.15 local-color:"mpls" remote-system-ip:10.13.13.13 remote-color:"mpls" new-state:up deleted:false flap-reason:na

local7.info: Mar 20 11:36:41 VEDGE-2 FTMD[1119]: %Viptela-VEDGE-2-ftmd-6-INFO-1400002: Notification: 3/20/2020 11:36:41 bfd-state-change severity-level:major host-name:"VEDGE-2" system-ip:10.15.15.15 src-ip:192.168.2.8 dst-ip:192.168.1.4 proto:ipsec src-port:12386 dst-port:12406 local-system-ip:10.15.15.15 local-color:"biz-internet" remote-system-ip:10.13.13.13 remote-color:"mpls" new-state:up deleted:false flap-reason:na

VEDGE-2# show bfd sessions remote-color mpls system-ip 10.13.13.13 | t

SRC    DST                 SITE                              DETECT      TX

SRC IP   DST IP   PROTO  PORT   PORT   SYSTEM IP    ID    LOCAL COLOR   COLOR  STATE  MULTIPLIER  INTERVAL  UPTIME      TRANSITIONS

-------------------------------------------------------------------------------------------------------------------------------------

192.168.1.8  192.168.1.4  ipsec  12406  12406  10.13.13.13  13    mpls          mpls   up     7           1000      0:00:05:27  16

192.168.2.8  192.168.1.4  ipsec  12386  12406  10.13.13.13  13    biz-internet  mpls   up     7           1000      0:00:05:27  9

관련 정보

- 양방향 포워딩 탐지 및 데이터 플레인 연결 문제 해결

- 기술 지원 및 문서 − Cisco Systems