장비: Cisco 4507에서
에러 메시지
Error Message C4K_CHASSIS-3-MUXBUFFERREADSUPERVISORSELECTIONFAILED: Failed to read linecard [dec] muxbuffer supervisor selection register
증상:
configuration 초기화.
I/O 보드 인식 안됨
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/53SG/system/messages/sem_53sg/emsg.html#wp1352731
위 문서에 의하면,
Explanation The active supervisor tried to read alignment information for the switching module slot’s mux buffer from the chassis mux buffer module, but was unable to do so. This information is needed to make sure that switching module slot’s mux buffer is aligned towards the active supervisor engine.
Recommended Action If this message appears only once for a switching module, this could be a transient error and no action is required. If this message appears repeatedly (once every 5 minutes) on one or more switching modules please contact your technical support representative to replace the supervisor engine and chassis.
설명
Active Supervisor가 스위칭 슬롯의 멀티플렉서 버퍼에 대한 정렬 정보를 새시 멀티플렉서 버퍼 모듈에서 읽으려고 시도했지만 할수 없었다. 이 정보는스위칭 모듈 슬롯의 멀티플렉서 버퍼가 Active supervisor 엔진쪽으로 정렬되어 있는지 확인하는데 필요하다.
권장조치
메시지가 한번만 표시되면 일시적인 오류일 수 있으므로 별다른 조치가 필요하지 않다.
하나 이상의 스위칭 모듈에서 이 메시지가 반복적으로(5분에 한번 정도)나타나면 supervisor 엔진과 새시를 교체하라.
실제 조치한 내용
기존 I/O 보드(6번 슬롯에 장착됨)를 다른 슬롯에 장착하여 인식여부 확인(4,5번 인식 안됨, 7번 인식됨)하여 설정을 7번 슬롯에 맞도록 변경조치
아래 명령어로 i/o 보드 hot swap 교체
Switch# hw-module module 7 reset
교체후 모듈 확인해 보면 아래처럼 인식 되어 있음.
Switch#sh module Chassis Type : WS-C4507R Power consumed by backplane : 40 Watts Mod Ports Card Type Model Serial No. ---+-----+--------------------------------------+------------------+----------- 1 2 Supervisor IV 1000BaseX (GBIC) WS-X4515 JAE1244Z848 3 6 1000BaseX (GBIC) WS-X4306-GB JAE1244YTZM 7 18 1000BaseX (GBIC) WS-X4418-GB JAE15040CZ9 M MAC addresses Hw Fw Sw Status --+--------------------------------+---+------------+----------------+--------- 1 0021.a015.8040 to 0021.a015.8041 5.5 12.2(31r)SGA 12.2(54)SG Ok 3 001a.2f5e.fb30 to 001a.2f5e.fb35 4.4 Ok 7 68ef.bdcf.d9ce to 68ef.bdcf.d9df 1.4 Ok Mod Redundancy role Operating mode Redundancy status ----+-------------------+-------------------+---------------------------------- 1 Active Supervisor SSO Active
일단 사용가능해진 상태에서, show inventory 명령으로 확인해 보면, Mux Buffer가 모두 보이지 않는다. 현재는 3,7번만 보이는 상태로
정상인 경우, 3,4,5,6,7번이 모두 보여야 한다.
Switch#sh inventory NAME: "Switch System", DESCR: "Cisco Systems, Inc. WS-C4507R 7 slot switch " PID: WS-C4507R , VID: V09 , SN: FOX1242GA2Q NAME: "Clock Module", DESCR: "Clock Module" PID: WS-X4K-CLOCK , VID: V04 , SN: JAE1245ZSRU NAME: "Mux Buffer 3 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4590 , VID: V04 , SN: JAE1241WSL1 NAME: "Mux Buffer 7 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4590 , VID: V04 , SN: JAE1241WSS3 NAME: "Linecard(slot 1)", DESCR: "Supervisor IV with 2 1000BaseX GBIC ports" PID: WS-X4515 , VID: V14 , SN: JAE1244Z848 NAME: "Linecard(slot 3)", DESCR: "1000BaseX (GBIC) with 6 1000 GBIC ports" PID: WS-X4306-GB , VID: V12 , SN: JAE1244YTZM NAME: "GigabitEthernet3/1", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12440UM8 NAME: "GigabitEthernet3/2", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12440UMK NAME: "GigabitEthernet3/3", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12430SJV NAME: "GigabitEthernet3/4", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415438 NAME: "Linecard(slot 7)", DESCR: "1000BaseX (GBIC) with 18 1000 GBIC ports" PID: WS-X4418-GB , VID: V06 , SN: JAE15040CZ9 NAME: "GigabitEthernet7/1", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390TU4 NAME: "GigabitEthernet7/2", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390THX NAME: "GigabitEthernet7/3", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R59 NAME: "GigabitEthernet7/4", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R4C NAME: "GigabitEthernet7/5", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R5M NAME: "GigabitEthernet7/6", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390TTX NAME: "GigabitEthernet7/7", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: AFARW60 NAME: "GigabitEthernet7/8", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390TTW NAME: "GigabitEthernet7/9", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415435 NAME: "GigabitEthernet7/10", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R4X NAME: "GigabitEthernet7/11", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12430SYQ NAME: "GigabitEthernet7/12", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415443 NAME: "GigabitEthernet7/13", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415440 NAME: "GigabitEthernet7/14", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415442 NAME: "GigabitEthernet7/15", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415437 NAME: "GigabitEthernet7/16", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415436 NAME: "GigabitEthernet7/17", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: 9905090502571200 NAME: "GigabitEthernet7/18", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415472 NAME: "Fan", DESCR: "FanTray" PID: WS-X4597 , VID: V08 , SN: NWG1240030C NAME: "Power Supply 1", DESCR: "Power Supply ( AC 1300W )" PID: PWR-C45-1300ACV , VID: V05 , SN: DTM124400PQ NAME: "Power Supply 2", DESCR: "Power Supply ( AC 1300W )" PID: PWR-C45-1300ACV , VID: V05 , SN: DTM124400R6
Mux Buffer만 교체 해도 될것 같으나 Recommended Action에 따라 Chassis 를 교체하기로 결정하고 chassis를 교체하였음.
이후 show inventory명령을 실행하면, 아래처럼 5개의 Mux Buffer가 보인다.
Switch#sh inventory NAME: "Switch System", DESCR: "Cisco Systems, Inc. WS-C4507R 7 slot switch " PID: WS-C4507R , VID: , SN: FOX08190662 NAME: "Clock Module", DESCR: "Clock Module" PID: WS-X4K-CLOCK , VID: , SN: JAE0821JMFT NAME: "Mux Buffer 3 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4K-MUX , VID: , SN: JAE0815BZKS NAME: "Mux Buffer 4 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4K-MUX , VID: , SN: JAE0815BZMG NAME: "Mux Buffer 5 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4K-MUX , VID: , SN: JAE0826MN6T NAME: "Mux Buffer 6 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4K-MUX , VID: , SN: JAE0826MPQX NAME: "Mux Buffer 7 ", DESCR: "Mux Buffers for Redundancy Logic" PID: WS-X4K-MUX , VID: , SN: JAE0826MPRG NAME: "Linecard(slot 1)", DESCR: "Supervisor IV with 2 1000BaseX GBIC ports" PID: WS-X4515 , VID: V14 , SN: JAE1244Z848 NAME: "Linecard(slot 3)", DESCR: "1000BaseX (GBIC) with 6 1000 GBIC ports" PID: WS-X4306-GB , VID: V12 , SN: JAE1244YTZM NAME: "GigabitEthernet3/1", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12440UM8 NAME: "GigabitEthernet3/2", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415437 NAME: "GigabitEthernet3/3", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12430SJV NAME: "GigabitEthernet3/4", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12430SYQ NAME: "Linecard(slot 7)", DESCR: "1000BaseX (GBIC) with 18 1000 GBIC ports" PID: WS-X4418-GB , VID: V06 , SN: JAE15040CZ9 NAME: "GigabitEthernet7/1", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: AFARW60 NAME: "GigabitEthernet7/2", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390TU4 NAME: "GigabitEthernet7/3", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390TTX NAME: "GigabitEthernet7/4", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390THX NAME: "GigabitEthernet7/5", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R4C NAME: "GigabitEthernet7/6", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R59 NAME: "GigabitEthernet7/7", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390TTW NAME: "GigabitEthernet7/8", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R5M NAME: "GigabitEthernet7/9", DESCR: "1000BaseSX" PID: Unspecified , VID: , SN: FNS12390R4X NAME: "GigabitEthernet7/10", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415443 NAME: "GigabitEthernet7/11", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: FNS12440UMK NAME: "GigabitEthernet7/12", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415435 NAME: "GigabitEthernet7/13", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415438 NAME: "GigabitEthernet7/14", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415442 NAME: "GigabitEthernet7/15", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415436 NAME: "GigabitEthernet7/16", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415440 NAME: "GigabitEthernet7/17", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: LX100415472 NAME: "GigabitEthernet7/18", DESCR: "1000BaseLH" PID: Unspecified , VID: , SN: 9905090502571200 NAME: "Fan", DESCR: "FanTray" PID: WS-X4597 , VID: , SN: NWG08170161 NAME: "Power Supply 1", DESCR: "Power Supply ( AC 1300W )" PID: PWR-C45-1300ACV , VID: V05 , SN: DTM124400PQ NAME: "Power Supply 2", DESCR: "Power Supply ( AC 1300W )" PID: PWR-C45-1300ACV , VID: V05 , SN: DTM124400R6