1. The %CDP-4-NATIVE_VLAN_MISMATCH issue resolved when the switches reside in different VTP domains.
2. The VTP Transparent mode does not resolve the %CDP-4-NATIVE_VLAN_MISMATCH issue.
C2950#sh run int fa0/1 Building configuration... Current configuration : 108 bytes ! interface FastEthernet0/1 switchport access vlan 10 switchport mode access spanning-tree portfast end C2950# C2950#sh run int vlan 10 Building configuration... Current configuration : 81 bytes ! interface Vlan10 ip address 192.168.1.1 255.255.255.0 no ip route-cache end C2950# C2950#ping 192.168.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms C2950# C2950#sh cdp neighbors detail ------------------------- Device ID: C3560 Entry address(es): Platform: cisco WS-C3560-48TS, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 137 sec Version : Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2011 by Cisco Systems, Inc. Compiled Thu 05-May-11 16:14 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000002304A35C80FF0000 VTP Management Domain: '' Native VLAN: 20 (Mismatch) Duplex: full Management address(es): C2950# C2950#sh vtp status VTP Version : 2 Configuration Revision : 1 Maximum VLANs supported locally : 250 Number of existing VLANs : 6 VTP Operating Mode : Server VTP Domain Name : VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0xB1 0xBE 0x72 0x49 0x96 0x6D 0x99 0xA4 Configuration last modified by 0.0.0.0 at 3-1-93 00:03:55 Local updater ID is 192.168.1.1 on interface Vl10 (lowest numbered VLAN interface found) C2950# ================================================================================ C3560#sh run int fa0/1 Building configuration... Current configuration : 108 bytes ! interface FastEthernet0/1 switchport access vlan 20 switchport mode access spanning-tree portfast end C3560# C3560#sh run int vlan 20 Building configuration... Current configuration : 62 bytes ! interface Vlan20 ip address 192.168.1.2 255.255.255.0 end C3560# C3560#ping 192.168.1.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms C3560# C3560#sh cdp neighbors detail ------------------------- Device ID: C2950 Entry address(es): IP address: 192.168.1.1 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 166 sec Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA14, RELEASE SOFTWA RE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by cisco Systems, Inc. Compiled Tue 26-Oct-10 10:35 by nburra advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000001120296800FF0000 VTP Management Domain: '' Native VLAN: 10 (Mismatch) Duplex: full Management address(es): IP address: 192.168.1.1 C3560# C3560#sh vtp status VTP Version capable : 1 to 3 VTP version running : 1 VTP Domain Name : VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0023.04a3.5c80 Configuration last modified by 0.0.0.0 at 3-1-93 00:03:01 Local updater ID is 192.168.1.2 on interface Vl20 (lowest numbered VLAN interface found) Feature VLAN: -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 1005 Number of existing VLANs : 6 Configuration Revision : 1 MD5 digest : 0x05 0x05 0xF4 0x88 0xCB 0x99 0xA9 0x58 0xD8 0xF6 0xC7 0xE0 0x38 0xCB 0x72 0x72 C3560# ================================================================================ C2950# 00:06:10: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (10), with C3560 FastEthernet0/1 (20). 00:07:10: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (10), with C3560 FastEthernet0/1 (20). C2950# ================================================================================ C3560# *Mar 1 00:05:17.936: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (20), with C2950 FastEthernet0/1 (10). *Mar 1 00:06:17.940: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (20), with C2950 FastEthernet0/1 (10). C3560# ================================================================================ C2950#conf t Enter configuration commands, one per line. End with CNTL/Z. C2950(config)#vtp domain Building01 Changing VTP domain name from NULL to Building01 C2950(config)#end C2950# C2950#sh vtp status VTP Version : 2 Configuration Revision : 1 Maximum VLANs supported locally : 250 Number of existing VLANs : 6 VTP Operating Mode : Server VTP Domain Name : Building01 VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0x64 0xC2 0xA5 0x9E 0xD5 0x82 0x31 0xC4 Configuration last modified by 0.0.0.0 at 3-1-93 00:03:55 Local updater ID is 192.168.1.1 on interface Vl10 (lowest numbered VLAN interfac e found) C2950# C2950#sh cdp neighbors detail ------------------------- Device ID: C3560 Entry address(es): IP address: 192.168.1.2 Platform: cisco WS-C3560-48TS, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 139 sec Version : Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2011 by Cisco Systems, Inc. Compiled Thu 05-May-11 16:14 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000002304A35C80FF0000 VTP Management Domain: '' Native VLAN: 20 (Mismatch) Duplex: full Management address(es): IP address: 192.168.1.2 C2950# C2950#sh cdp neighbors detail ------------------------- Device ID: C3560 Entry address(es): IP address: 192.168.1.2 Platform: cisco WS-C3560-48TS, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 165 sec Version : Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2011 by Cisco Systems, Inc. Compiled Thu 05-May-11 16:14 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000002304A35C80FF0000 VTP Management Domain: '' Native VLAN: 20 Duplex: full Management address(es): IP address: 192.168.1.2 C2950# ================================================================================ C3560#sh vtp status VTP Version capable : 1 to 3 VTP version running : 1 VTP Domain Name : VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0023.04a3.5c80 Configuration last modified by 0.0.0.0 at 3-1-93 00:03:01 Local updater ID is 192.168.1.2 on interface Vl20 (lowest numbered VLAN interfac e found) Feature VLAN: -------------- VTP Operating Mode : Server Maximum VLANs supported locally : 1005 Number of existing VLANs : 6 Configuration Revision : 1 MD5 digest : 0x05 0x05 0xF4 0x88 0xCB 0x99 0xA9 0x58 0xD8 0xF6 0xC7 0xE0 0x38 0xCB 0x72 0x72 C3560# C3560#sh cdp neighbors detail ------------------------- Device ID: C2950 Entry address(es): IP address: 192.168.1.1 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 151 sec Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA14, RELEASE SOFTWA RE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by cisco Systems, Inc. Compiled Tue 26-Oct-10 10:35 by nburra advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000001120296800FF0000 VTP Management Domain: 'Building01' Native VLAN: 10 Duplex: full Management address(es): IP address: 192.168.1.1 C3560# ================================================================================ C3560#conf t Enter configuration commands, one per line. End with CNTL/Z. C3560(config)#vtp domain Building01 Changing VTP domain name from NULL to Building01 C3560(config)#end C3560# *Mar 1 00:08:10.607: %SW_VLAN-6-VTP_DOMAIN_NAME_CHG: VTP domain name changed to Building01. C3560# C3560#sh cdp neighbors detail ------------------------- Device ID: C2950 Entry address(es): IP address: 192.168.1.1 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 120 sec Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA14, RELEASE SOFTWA RE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by cisco Systems, Inc. Compiled Tue 26-Oct-10 10:35 by nburra advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000001120296800FF0000 VTP Management Domain: 'Building01' Native VLAN: 10 Duplex: full Management address(es): IP address: 192.168.1.1 C3560# ================================================================================ C2950# 00:10:10: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (10), with C3560 FastEthernet0/1 (20). C2950# C2950#sh cdp neighbors detail ------------------------- Device ID: C3560 Entry address(es): IP address: 192.168.1.2 Platform: cisco WS-C3560-48TS, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 174 sec Version : Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2011 by Cisco Systems, Inc. Compiled Thu 05-May-11 16:14 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000002304A35C80FF0000 VTP Management Domain: 'Building01' Native VLAN: 20 (Mismatch) Duplex: full Management address(es): IP address: 192.168.1.2 C2950# ================================================================================ C3560# *Mar 1 00:09:17.943: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (20), with C2950 FastEthernet0/1 (10). C3560# C3560#sh cdp neighbors detail ------------------------- Device ID: C2950 Entry address(es): IP address: 192.168.1.1 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 170 sec Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA14, RELEASE SOFTWA RE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by cisco Systems, Inc. Compiled Tue 26-Oct-10 10:35 by nburra advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000001120296800FF0000 VTP Management Domain: 'Building01' Native VLAN: 10 (Mismatch) Duplex: full Management address(es): IP address: 192.168.1.1 C3560# ================================================================================ C2950#conf t Enter configuration commands, one per line. End with CNTL/Z. C2950(config)#vtp mode transparent Setting device to VTP TRANSPARENT mode. C2950(config)#end C2950# ================================================================================ C3560#conf t Enter configuration commands, one per line. End with CNTL/Z. C3560(config)#vtp mode transparent Setting device to VTP Transparent mode for VLANS. C3560(config)#end C3560# ================================================================================ C2950# 00:11:10: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (10), with C3560 FastEthernet0/1 (20). C2950# C2950#sh vtp status VTP Version : 2 Configuration Revision : 0 Maximum VLANs supported locally : 250 Number of existing VLANs : 6 VTP Operating Mode : Transparent VTP Domain Name : Building01 VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0x64 0xC2 0xA5 0x9E 0xD5 0x82 0x31 0xC4 Configuration last modified by 0.0.0.0 at 3-1-93 00:03:55 C2950# C2950#sh cdp neighbors detail ------------------------- Device ID: C3560 Entry address(es): IP address: 192.168.1.2 Platform: cisco WS-C3560-48TS, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 158 sec Version : Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2011 by Cisco Systems, Inc. Compiled Thu 05-May-11 16:14 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000002304A35C80FF0000 VTP Management Domain: 'Building01' Native VLAN: 20 (Mismatch) Duplex: full Management address(es): IP address: 192.168.1.2 C2950# ================================================================================ C3560# *Mar 1 00:10:17.946: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (20), with C2950 FastEthernet0/1 (10). C3560# C3560#sh vtp status VTP Version capable : 1 to 3 VTP version running : 1 VTP Domain Name : Building01 VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0023.04a3.5c80 Configuration last modified by 0.0.0.0 at 3-1-93 00:03:01 Feature VLAN: -------------- VTP Operating Mode : Transparent Maximum VLANs supported locally : 1005 Number of existing VLANs : 6 Configuration Revision : 0 MD5 digest : 0x7F 0x33 0x0C 0xC9 0x6B 0x97 0x4A 0x32 0x85 0xF3 0x6F 0xD4 0xEA 0x78 0xEB 0x6B C3560# C3560#sh cdp neighbors detail ------------------------- Device ID: C2950 Entry address(es): IP address: 192.168.1.1 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1 Holdtime : 158 sec Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA14, RELEASE SOFTWA RE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by cisco Systems, Inc. Compiled Tue 26-Oct-10 10:35 by nburra advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=0000000 0FFFFFFFF010221FF000000000000001120296800FF0000 VTP Management Domain: 'Building01' Native VLAN: 10 (Mismatch) Duplex: full Management address(es): IP address: 192.168.1.1 C3560# ================================================================================ C3560#conf t Enter configuration commands, one per line. End with CNTL/Z. C3560(config)#int fa0/1 C3560(config-if)#no cdp enable C3560(config-if)#end C3560# ================================================================================ C2950#sh cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone Device ID Local Intrfce Holdtme Capability Platform Port ID C3560 Fas 0/1 75 S I WS-C3560-4Fas 0/1 C2950# ================================================================================ C3560#sh cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone, D - Remote, C - CVTA, M - Two-port Mac Relay Device ID Local Intrfce Holdtme Capability Platform Port ID C2950 Fas 0/1 81 S I WS-C2950T Fas 0/1 C3560# ================================================================================ C2950#sh cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone Device ID Local Intrfce Holdtme Capability Platform Port ID C3560 Fas 0/1 0 S I WS-C3560-4Fas 0/1 C2950# C2950#sh cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone Device ID Local Intrfce Holdtme Capability Platform Port ID C2950# ================================================================================ C3560#sh cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone, D - Remote, C - CVTA, M - Two-port Mac Relay Device ID Local Intrfce Holdtme Capability Platform Port ID C2950 Fas 0/1 0 S I WS-C2950T Fas 0/1 C3560# C3560#sh cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone, D - Remote, C - CVTA, M - Two-port Mac Relay Device ID Local Intrfce Holdtme Capability Platform Port ID C3560#
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