VTP并不能在所有交换机中工作

Question

服务器:C 3650-48TS，03.03.05SE

SW01#sh vtp sta
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : TEST
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : aaaa.aaaa.aaaa
Configuration last modified by xxx.xxx.xxx.xxx at 4-23-16 04:41:17
Local updater ID is xxx.xxx.xxx.xxx on interface Vl1 (lowest numbered VLAN interface found)

Feature VLAN:
--------------
VTP Operating Mode                : Server
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 15
Configuration Revision            : 7
MD5 digest                        : 0xC1 0x5A 0x47 0xDB 0x1A 0x6E 0x8E 0x3E
                                0xF4 0xF2 0xE3 0x52 0x4B 0x44 0x85 0xB2

工作客户端: C2960X，15.0(2a)EX5

SW02#sh vtp sta
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : TEST
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : bbbb.bbbb.bbbb
Configuration last modified by xxx.xxx.xxx.xxx at 4-23-16 04:41:17

Feature VLAN:
--------------
VTP Operating Mode                : Client
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 15
Configuration Revision            : 7
MD5 digest                        : 0xC1 0x5A 0x47 0xDB 0x1A 0x6E 0x8E 0x3E
                                0xF4 0xF2 0xE3 0x52 0x4B 0x44 0x85 0xB2

不支持VTP的客户端: C2960X，15.0(2)EX5

SW03#sh vtp sta
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : TEST
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : cccc.cccc.cccc
Configuration last modified by xxx.xxx.xxx.xxx at 3-20-16 22:11:29

Feature VLAN:
--------------
VTP Operating Mode                : Client
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 12
Configuration Revision            : 0
MD5 digest                        : 0x2C 0x19 0x9F 0x80 0x3D 0x53 0xBE 0xEA
                                0x35 0x86 0x0F 0xF8 0xAB 0x59 0x79 0x4E

无MD5校验和错误

调试消息是:

Apr 25 04:26:05.878: vlan manager pkt rcvd on GigabitEthernet1/0/26, length 99
Apr 25 04:26:05.878: VTP LOG RUNTIME: Summary packet received, domain = TEST, rev = 7, followers = 0, length 77, trunk Gi1/0/26
Apr 25 04:26:05.878: VTP LOG RUNTIME: Summary packet rev 7 greater than domain TEST rev 0
Apr 25 04:26:05.878: VTP LOG RUNTIME: Domain TEST currently not in updating state
Apr 25 04:26:05.878: VTP LOG RUNTIME: Summary packet with followers field zero
Apr 25 04:26:05.878: VTP LOG RUNTIME: Transmit vtp request, domain TEST, start value 0
Apr 25 04:26:06.207: vlan manager pkt rcvd on GigabitEthernet1/0/26, length 99
Apr 25 04:26:06.207: VTP LOG RUNTIME: Summary packet received, domain = TEST, rev = 7, followers = 1, length 77, trunk Gi1/0/26
Apr 25 04:26:06.207: VTP LOG RUNTIME: Summary packet rev 7 greater than domain TEST rev 0
Apr 25 04:26:06.207: VTP LOG RUNTIME: Domain TEST currently not in updating state
Apr 25 04:26:06.207: VTP LOG RUNTIME: pdu len 77, #tlvs 1
Apr 25 04:26:06.207: vlan manager pkt rcvd on GigabitEthernet1/0/26, length 382
Apr 25 04:26:06.207: VTP LOG RUNTIME: Subset packet received, domain = TEST, rev = 7, seq = 1, length = 360
Apr 25 04:26:06.207: VTP LOG RUNTIME: MD5 digest failing
calculated = 43 0B E9 E7 9D 1A 5D C0 05 94 B2 E2 C4 F2 08 F6
transmitted = C1 5A 47 DB 1A 6E 8E 3E F4 F2 E3 52 4B 44 85 B2

在我只将VTP置于透明模式后，SW03下的其他交换机正在工作。

透明模式调试消息：

Apr 25 04:45:54.020: vlan manager pkt rcvd on GigabitEthernet1/0/25, length 99
Apr 25 04:45:54.020: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/25 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.023: vlan manager pkt rcvd on GigabitEthernet1/0/27, length 60
Apr 25 04:45:54.023: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/27 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.023: vlan manager pkt rcvd on GigabitEthernet1/0/26, length 60
Apr 25 04:45:54.023: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/26 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.132: vlan manager pkt rcvd on GigabitEthernet1/0/25, length 99
Apr 25 04:45:54.132: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/25 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.132: vlan manager pkt rcvd on GigabitEthernet1/0/25, length 366
Apr 25 04:45:54.132: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/25 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.153: vlan manager pkt rcvd on GigabitEthernet1/0/26, length 99
Apr 25 04:45:54.156: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/26 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.156: vlan manager pkt rcvd on GigabitEthernet1/0/26, length 366
Apr 25 04:45:54.156: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/26 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.156: vlan manager pkt rcvd on GigabitEthernet1/0/27, length 99
Apr 25 04:45:54.156: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/27 - in TRANSPARENT MODE (nc = false)
Apr 25 04:45:54.156: vlan manager pkt rcvd on GigabitEthernet1/0/27, length 366
Apr 25 04:45:54.156: VTP LOG RUNTIME: Relaying packet received on trunk Gi1/0/27 - in TRANSPARENT MODE (nc = false)

Answer 1

显然，您的VTP密码是不正确的2960 X，这是不工作的。VTP上的MD5摘要与您显示的三个开关中的最后一个(不工作)不匹配。您写过没有MD5校验和错误，但是调试输出中有：

Apr 25 04:26:06.207: VTP LOG RUNTIME: MD5 digest failing

您可以在开关上使用show vtp password命令来显示您在交换机上使用的VTP密码。在能工作的开关上这样做，然后在不工作的开关上这样做，你可能会发现它不完全匹配。您可以将其复制到工作开关上，然后将其粘贴到非工作开关中。