Vlan
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Vlan as PDF for free.
More details
- Words: 1,960
- Pages: 40
Chapter 7
Extending Switched Networks with Virtual LANs © 1999, Cisco Systems, Inc.
71
Objectives Upon completion of this chapter, you will be able to perform the following tasks: • Configure a VLAN • Configure VLAN Trunking Protocol (VTP) • Configure a switch for trunking • Verify VLAN connectivity • Verify spanningtree operations
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—72
VLAN Overview
• Segmentation
3rd floor
• Flexibility
2nd floor
1st floor
• Security SALES
HR
ENG
A VLAN = A broadcast domain = Logical network (subnet) © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—73
VLAN Operations Switch A
Red VLAN
Black VLAN
Green VLAN
• Each logical VLAN is like a separate physical bridge
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—74
VLAN Operations Switch A
Red VLAN
Black VLAN
Switch B
Green VLAN
Red VLAN
Black VLAN
Green VLAN
• Each logical VLAN is like a separate physical bridge • VLANs can span across multiple switches
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—75
VLAN Operations Switch A
Switch B
Trunk Fast Ethernet
Red VLAN
Black VLAN
Green VLAN
Red VLAN
Black VLAN
Green VLAN
• Each logical VLAN is like a separate physical bridge • VLANs can span across multiple switches • Trunks carries traffic for multiple VLANs © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—76
VLAN Membership Modes Static VLAN
Dynamic VLAN Trunk
Port e0/4
Port e0/9
VLAN5
VLAN10 VMPS
1111.1111.1111 = vlan 10 MAC = 1111.1111.1111
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—77
ISL Tagging ISL trunks enable VLANs across a backbone • Performed with ASIC
VLAN Tag added by incoming port
• Not intrusive to client stations, client does not see the ISL header InterSwitch Link carries VLAN identifier
• Effective between switches, routers and switches, switches and servers with ISL network interface cards
VLAN Tag stripped by forwarding port © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—78
ISL Encapsulation ISL Header 26 bytes DA
Type User
Encapsulated Ethernet frame
CRC 4 bytes
SA LEN AAAA03 HSA VLAN BPDU BPDU INDEX RES VLAN
BPDU
• Frames encapsulated with ISL header and CRC • Support for many VLANs (1024) • VLAN field • BPDU bit © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—79
VLAN Trunking Protocol (VTP) • A messaging system that advertises VLAN configuration information • Maintains VLAN configuration consistency throughout a common administrative domain • VTP sends advertisements on trunk ports only • Support mixed media trunks (Fast Ethernet, FDDI, ATM) VTP Domain “ICND” 3.Sync to the latest vlan information
2
© 1999, Cisco Systems, Inc.
1.“new vlan added”
www.cisco.com
ICND—710
VTP Modes • Create vlans • Modify vlans • Delete vlans • Sends/forwards advertisements • Synchronize • Saved in NVRAM
Server
• Sends/forwards advertisements • Synchronize • Not saved in NVRAM
© 1999, Cisco Systems, Inc.
Client
Transparent
www.cisco.com
• Create vlans • Modify vlans • Delete vlans • Forwards advertisements • Does not synchronize • Saved in NVRAM
ICND—711
How VTP Works • VTP advertisements are sent as multicast frames • VTP servers and clients synchronized to latest revision number • VTP advertisement are sent every five minutes or when there is a change
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—712
How VTP Works • VTP advertisements are sent as multicast frames • VTP servers and clients synchronized to latest revision number • VTP advertisement are sent every five minutes or when there is a change 1.Add new VLAN 2.Rev 3 > Rev 4
3
Server
3
4.Rev 3 > Rev 4 5.Sync new vlan info
4.Rev 3 > Rev 4 5.Sync new vlan info Client
© 1999, Cisco Systems, Inc.
Client www.cisco.com
ICND—713
VTP Pruning •
Increases available bandwidth by reducing unnecessary flooded traffic
•
Example: Station A sends broadcast, broadcast is only flooded toward any switch with ports assigned to the red VLAN Port 2
Switch 4 Flooded traffic is pruned
B
Switch 2 Red VLAN
Switch 5
Port 1 Switch 6 © 1999, Cisco Systems, Inc.
Switch 3 www.cisco.com
A
Switch 1 ICND—714
VLAN Configuration Guidelines • Maximum number of VLANs is switchdependent • Catalyst 1900 supports 64 VLANs with a separate spanning tree per VLAN • VLAN1 is One of the factory default VLANs • CDP and VTP advertisements are sent on VLAN1
• Catalyst 1900 IP address is in the VLAN1 broadcast domain • Must be in VTP server or transparent mode to create, add, or delete VLANs
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—715
VLAN Configuration Steps • Enable VTP (optional) • Enable trunking • Create VLANs • Assign VLAN to ports
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—716
VTP Configuration Guidelines • VTP domain name • VTP mode (server/client/transparent)—VTP server mode is the default • VTP pruning • VTP password • VTP trap Use caution when adding a new switch into an existing domain. A new switch should be added in client mode to prevent the new switch from propagating incorrect VLANs information Use the delete vtp command to reset the VTP revision number
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—717
Creating a VTP Domain wg_sw_a(config)# vtp [server | transparent] [domain domainname] [trap {enable | disable}] [password password] [pruning {enable | disable}
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—718
Creating a VTP Domain wg_sw_a(config)# vtp [server | transparent] [domain domainname] [trap {enable | disable}] [password password] [pruning {enable | disable}
wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vtp transparent wg_sw_a(config)#vtp domain switchlab
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—719
Verifying VTP Configurations wg_sw_a#show vtp
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—720
Verifying VTP Configurations wg_sw_a#show vtp wg_sw_a#show vtp VTP version: 1 Configuration revision: 4 Maximum VLANs supported locally: 1005 Number of existing VLANs: 6 VTP domain name : switchlab VTP password : VTP operating mode : Transparent VTP pruning mode : Enabled VTP traps generation : Enabled Configuration last modified by: 10.1.1.40 at 00000000 00:00:00
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—721
Defining a Trunk wg_sw_a(configif)# trunk [on | off | desirable | auto | nonegotiate] • On = Set trunk on and negotiate with other side • Off = Set trunk off and negotiate with other side • Desirable = Negotiate with other side. Trunk on if other side is on, desirable, or auto • Auto = Will be a trunk only if the other side is on or desirable • Nonnegotiate = Set trunk on and will not negotiate
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—722
Defining a Trunk wg_sw_a(configif)# trunk [on | off | desirable | auto | nonegotiate] • On = Set trunk on and negotiate with other side • Off = Set trunk off and negotiate with other side • Desirable = Negotiate with other side. Trunk on if other side is on, desirable, or auto • Auto = Will be a trunk only if the other side is on or desirable • Nonnegotiate = Set trunk on and will not negotiate wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#interface f0/26 wg_sw_a(configif)#trunk on
First trunk port(Port A) © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—723
Verifying a Trunk
wg_sw_a#show trunk [A | B]
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—724
Verifying a Trunk
wg_sw_a#show trunk [A | B]
wg_sw_a#show trunk a DISL state: On, Trunking: On, Encapsulation type: ISL
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—725
Adding a VLAN wg_sw_a(config)# vlan vlan# [name vlanname]
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—726
Adding a VLAN wg_sw_a(config)# vlan vlan# [name vlanname]
wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vlan 9 name switchlab2
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—727
Verifying a VLAN wg_sw_a#show vlan [vlan#]
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—728
Verifying a VLAN wg_sw_a#show vlan [vlan#]
wg_sw_a#sh vlan 9 VLAN Name Status Ports 9 switchlab2 Enabled VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 9 Ethernet 100009 1500 0 1 1 Unkn 0 0
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—729
Modifying a VLAN Name wg_sw_a(config)#
vlan vlan# name vlanname wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vlan 9 name switchlab90 wg_sw_a#show vlan 9 VLAN Name Status Ports 9 switchlab90 Enabled
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—730
Assigning Switch Ports to a VLAN wg_sw_a(configif)# vlanmembership {static {vlan#} | dynamic}
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—731
Assigning Switch Ports to a VLAN wg_sw_a(configif)# vlanmembership {static {vlan#} | dynamic}
wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#interface ethernet 0/8 wg_sw_a(configif)#vlanmembership static 9
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—732
Verifying VLAN Membership wg_sw_a#show vlanmembership
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—733
Verifying VLAN Membership wg_sw_a#show vlanmembership wg_sw_a#show vlanmembership Port VLAN Membership Type 1 5 Static 2 1 Static 3 1 Static 4 1 Static 5 1 Static 6 1 Static 7 1 Static 8 9 Static
Port VLAN Membership Type 13 1 Static 14 1 Static 15 1 Static 16 1 Static 17 1 Static 18 1 Static 19 1 Static 20 1 Static
Note: port 1=e0/1, port 2=e0/2 ..... © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—734
Verifying Spanning Tree wg_sw_a#show spantree {vlan number}
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—735
Verifying Spanning Tree wg_sw_a#show spantree {vlan number} wg_sw_a#show spantree 1 VLAN1 is executing the IEEE compatible Spanning Tree Protocol Bridge Identifier has priority 32768, address 0050.F037.DA00 Configured hello time 2, max age 20, forward delay 15 Current root has priority 0, address 00D0.588F.B600 Root port is FastEthernet 0/26, cost of root path is 10 Topology change flag not set, detected flag not set Topology changes 53, last topology change occured 0d00h17m14s ago Times: hold 1, topology change 8960 hello 2, max age 20, forward delay 15 Timers: hello 2, topology change 35, notification 2 Port Ethernet 0/1 of VLAN1 is Forwarding Port path cost 100, Port priority 128 Designated root has priority 0, address 00D0.588F.B600 Designated bridge has priority 32768, address 0050.F037.DA00 Designated port is Ethernet 0/1, path cost 10 Timers: message age 20, forward delay 15, hold 1 © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—736
Visual Objective SUBNET 10.1.1.0 10.2.2.0 10.3.3.0 10.4.4.0 10.5.5.0 10.6.6.0 10.7.7.0 10.8.8.0 10.9.9.0 10.10.10.0 10.11.11.0 10.12.12.0 10.13.13.0
VLAN 1 2 3 4 5 6 7 8 9 10 11 12 13
POD wg_ro_x, wg_sw_x, core_sw_a wg_pc_a, core_server wg_pc_b, core_server wg_pc_c, core_server wg_pc_d, core_server wg_pc_e, core_server wg_pc_f, core_server wg_pc_g, core_server wg_pc_h, core_server wg_pc_i, core_server wg_pc_j, core_server wg_pc_k, core_server wg_pc_l, core_server ISL
VLAN2
wg_pc_a 10.2.2.12
fa0/26 e0/1 (port A)
e0/2
wg_sw_a 10.1.1.10 VLAN13 fa0/26 e0/1 (port A)
...
fa0/1
wg_sw_l ISL 10.1.1.120
e0 wg_ro_a 10.1.1.11
wg_pc_l 10.13.13.12
e0/2
e0 wg_ro_l 10.1.1.121
fa0/12
fa0/24 core_ server ISL core_sw_a 10.x.x.1 10.1.1.2 © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—737
Visual Objective SUBNET 10.1.1.0 10.2.2.0 10.3.3.0 10.4.4.0 10.5.5.0 10.6.6.0 10.7.7.0 10.8.8.0 10.9.9.0 10.10.10.0 10.11.11.0 10.12.12.0 10.13.13.0
VLAN 1 2 3 4 5 6 7 8 9 10 11 12 13
POD wg_ro_x, wg_sw_x, core_sw_a, core_sw_b wg_pc_a, core_server wg_pc_b, core_server wg_pc_c, core_server wg_pc_d, core_server wg_pc_e, core_server wg_pc_f, core_server wg_pc_g, core_server wg_pc_h, core_server wg_pc_i, core_server wg_pc_j, core_server wg_pc_k, core_server wg_pc_l, core_server
ISL fa0/24 core_ server 10.x.x.1 © 1999, Cisco Systems, Inc.
ISL
wg_pc_a 10.2.2.12
VLAN2 fa0/26 e0/1 (port A)
fa0/27 (port B)
wg_sw_a 10.1.1.10 wg_pc_l 10.13.13.12
VLAN13 fa0/26 (port A) e0/1
...
fa0/1
core_sw_a 10.1.1.2
www.cisco.com
fa0/27 (port B)
wg_sw_l 10.1.1.120 ISL fa0/12 fa0/13 fa0/14
ISL fa0/12 fa0/13 ISL fa0/14
...
ISL
fa0/1
core_sw_b 10.1.1.4 ICND—738
Summary After completing this chapter, you should be able to perform the following tasks: • Configuring VLAN • Configuring VTP • Configuring a trunk • Verifing Spanning Tree Operations
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—739
Review Questions 1. What are the three VTP modes? 2. Over what type of port can VTP advertisements be sent? 3. VLAN ID is carried in the ________ header. 4. How do we assign a VLAN to a port?
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—740
Extending Switched Networks with Virtual LANs © 1999, Cisco Systems, Inc.
71
Objectives Upon completion of this chapter, you will be able to perform the following tasks: • Configure a VLAN • Configure VLAN Trunking Protocol (VTP) • Configure a switch for trunking • Verify VLAN connectivity • Verify spanningtree operations
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—72
VLAN Overview
• Segmentation
3rd floor
• Flexibility
2nd floor
1st floor
• Security SALES
HR
ENG
A VLAN = A broadcast domain = Logical network (subnet) © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—73
VLAN Operations Switch A
Red VLAN
Black VLAN
Green VLAN
• Each logical VLAN is like a separate physical bridge
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—74
VLAN Operations Switch A
Red VLAN
Black VLAN
Switch B
Green VLAN
Red VLAN
Black VLAN
Green VLAN
• Each logical VLAN is like a separate physical bridge • VLANs can span across multiple switches
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—75
VLAN Operations Switch A
Switch B
Trunk Fast Ethernet
Red VLAN
Black VLAN
Green VLAN
Red VLAN
Black VLAN
Green VLAN
• Each logical VLAN is like a separate physical bridge • VLANs can span across multiple switches • Trunks carries traffic for multiple VLANs © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—76
VLAN Membership Modes Static VLAN
Dynamic VLAN Trunk
Port e0/4
Port e0/9
VLAN5
VLAN10 VMPS
1111.1111.1111 = vlan 10 MAC = 1111.1111.1111
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—77
ISL Tagging ISL trunks enable VLANs across a backbone • Performed with ASIC
VLAN Tag added by incoming port
• Not intrusive to client stations, client does not see the ISL header InterSwitch Link carries VLAN identifier
• Effective between switches, routers and switches, switches and servers with ISL network interface cards
VLAN Tag stripped by forwarding port © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—78
ISL Encapsulation ISL Header 26 bytes DA
Type User
Encapsulated Ethernet frame
CRC 4 bytes
SA LEN AAAA03 HSA VLAN BPDU BPDU INDEX RES VLAN
BPDU
• Frames encapsulated with ISL header and CRC • Support for many VLANs (1024) • VLAN field • BPDU bit © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—79
VLAN Trunking Protocol (VTP) • A messaging system that advertises VLAN configuration information • Maintains VLAN configuration consistency throughout a common administrative domain • VTP sends advertisements on trunk ports only • Support mixed media trunks (Fast Ethernet, FDDI, ATM) VTP Domain “ICND” 3.Sync to the latest vlan information
2
© 1999, Cisco Systems, Inc.
1.“new vlan added”
www.cisco.com
ICND—710
VTP Modes • Create vlans • Modify vlans • Delete vlans • Sends/forwards advertisements • Synchronize • Saved in NVRAM
Server
• Sends/forwards advertisements • Synchronize • Not saved in NVRAM
© 1999, Cisco Systems, Inc.
Client
Transparent
www.cisco.com
• Create vlans • Modify vlans • Delete vlans • Forwards advertisements • Does not synchronize • Saved in NVRAM
ICND—711
How VTP Works • VTP advertisements are sent as multicast frames • VTP servers and clients synchronized to latest revision number • VTP advertisement are sent every five minutes or when there is a change
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—712
How VTP Works • VTP advertisements are sent as multicast frames • VTP servers and clients synchronized to latest revision number • VTP advertisement are sent every five minutes or when there is a change 1.Add new VLAN 2.Rev 3 > Rev 4
3
Server
3
4.Rev 3 > Rev 4 5.Sync new vlan info
4.Rev 3 > Rev 4 5.Sync new vlan info Client
© 1999, Cisco Systems, Inc.
Client www.cisco.com
ICND—713
VTP Pruning •
Increases available bandwidth by reducing unnecessary flooded traffic
•
Example: Station A sends broadcast, broadcast is only flooded toward any switch with ports assigned to the red VLAN Port 2
Switch 4 Flooded traffic is pruned
B
Switch 2 Red VLAN
Switch 5
Port 1 Switch 6 © 1999, Cisco Systems, Inc.
Switch 3 www.cisco.com
A
Switch 1 ICND—714
VLAN Configuration Guidelines • Maximum number of VLANs is switchdependent • Catalyst 1900 supports 64 VLANs with a separate spanning tree per VLAN • VLAN1 is One of the factory default VLANs • CDP and VTP advertisements are sent on VLAN1
• Catalyst 1900 IP address is in the VLAN1 broadcast domain • Must be in VTP server or transparent mode to create, add, or delete VLANs
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—715
VLAN Configuration Steps • Enable VTP (optional) • Enable trunking • Create VLANs • Assign VLAN to ports
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—716
VTP Configuration Guidelines • VTP domain name • VTP mode (server/client/transparent)—VTP server mode is the default • VTP pruning • VTP password • VTP trap Use caution when adding a new switch into an existing domain. A new switch should be added in client mode to prevent the new switch from propagating incorrect VLANs information Use the delete vtp command to reset the VTP revision number
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—717
Creating a VTP Domain wg_sw_a(config)# vtp [server | transparent] [domain domainname] [trap {enable | disable}] [password password] [pruning {enable | disable}
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—718
Creating a VTP Domain wg_sw_a(config)# vtp [server | transparent] [domain domainname] [trap {enable | disable}] [password password] [pruning {enable | disable}
wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vtp transparent wg_sw_a(config)#vtp domain switchlab
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—719
Verifying VTP Configurations wg_sw_a#show vtp
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—720
Verifying VTP Configurations wg_sw_a#show vtp wg_sw_a#show vtp VTP version: 1 Configuration revision: 4 Maximum VLANs supported locally: 1005 Number of existing VLANs: 6 VTP domain name : switchlab VTP password : VTP operating mode : Transparent VTP pruning mode : Enabled VTP traps generation : Enabled Configuration last modified by: 10.1.1.40 at 00000000 00:00:00
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—721
Defining a Trunk wg_sw_a(configif)# trunk [on | off | desirable | auto | nonegotiate] • On = Set trunk on and negotiate with other side • Off = Set trunk off and negotiate with other side • Desirable = Negotiate with other side. Trunk on if other side is on, desirable, or auto • Auto = Will be a trunk only if the other side is on or desirable • Nonnegotiate = Set trunk on and will not negotiate
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—722
Defining a Trunk wg_sw_a(configif)# trunk [on | off | desirable | auto | nonegotiate] • On = Set trunk on and negotiate with other side • Off = Set trunk off and negotiate with other side • Desirable = Negotiate with other side. Trunk on if other side is on, desirable, or auto • Auto = Will be a trunk only if the other side is on or desirable • Nonnegotiate = Set trunk on and will not negotiate wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#interface f0/26 wg_sw_a(configif)#trunk on
First trunk port(Port A) © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—723
Verifying a Trunk
wg_sw_a#show trunk [A | B]
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—724
Verifying a Trunk
wg_sw_a#show trunk [A | B]
wg_sw_a#show trunk a DISL state: On, Trunking: On, Encapsulation type: ISL
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—725
Adding a VLAN wg_sw_a(config)# vlan vlan# [name vlanname]
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—726
Adding a VLAN wg_sw_a(config)# vlan vlan# [name vlanname]
wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vlan 9 name switchlab2
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—727
Verifying a VLAN wg_sw_a#show vlan [vlan#]
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—728
Verifying a VLAN wg_sw_a#show vlan [vlan#]
wg_sw_a#sh vlan 9 VLAN Name Status Ports 9 switchlab2 Enabled VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 9 Ethernet 100009 1500 0 1 1 Unkn 0 0
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—729
Modifying a VLAN Name wg_sw_a(config)#
vlan vlan# name vlanname wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#vlan 9 name switchlab90 wg_sw_a#show vlan 9 VLAN Name Status Ports 9 switchlab90 Enabled
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—730
Assigning Switch Ports to a VLAN wg_sw_a(configif)# vlanmembership {static {vlan#} | dynamic}
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—731
Assigning Switch Ports to a VLAN wg_sw_a(configif)# vlanmembership {static {vlan#} | dynamic}
wg_sw_a#conf terminal Enter configuration commands, one per line. End with CNTL/Z wg_sw_a(config)#interface ethernet 0/8 wg_sw_a(configif)#vlanmembership static 9
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—732
Verifying VLAN Membership wg_sw_a#show vlanmembership
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—733
Verifying VLAN Membership wg_sw_a#show vlanmembership wg_sw_a#show vlanmembership Port VLAN Membership Type 1 5 Static 2 1 Static 3 1 Static 4 1 Static 5 1 Static 6 1 Static 7 1 Static 8 9 Static
Port VLAN Membership Type 13 1 Static 14 1 Static 15 1 Static 16 1 Static 17 1 Static 18 1 Static 19 1 Static 20 1 Static
Note: port 1=e0/1, port 2=e0/2 ..... © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—734
Verifying Spanning Tree wg_sw_a#show spantree {vlan number}
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—735
Verifying Spanning Tree wg_sw_a#show spantree {vlan number} wg_sw_a#show spantree 1 VLAN1 is executing the IEEE compatible Spanning Tree Protocol Bridge Identifier has priority 32768, address 0050.F037.DA00 Configured hello time 2, max age 20, forward delay 15 Current root has priority 0, address 00D0.588F.B600 Root port is FastEthernet 0/26, cost of root path is 10 Topology change flag not set, detected flag not set Topology changes 53, last topology change occured 0d00h17m14s ago Times: hold 1, topology change 8960 hello 2, max age 20, forward delay 15 Timers: hello 2, topology change 35, notification 2 Port Ethernet 0/1 of VLAN1 is Forwarding Port path cost 100, Port priority 128 Designated root has priority 0, address 00D0.588F.B600 Designated bridge has priority 32768, address 0050.F037.DA00 Designated port is Ethernet 0/1, path cost 10 Timers: message age 20, forward delay 15, hold 1 © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—736
Visual Objective SUBNET 10.1.1.0 10.2.2.0 10.3.3.0 10.4.4.0 10.5.5.0 10.6.6.0 10.7.7.0 10.8.8.0 10.9.9.0 10.10.10.0 10.11.11.0 10.12.12.0 10.13.13.0
VLAN 1 2 3 4 5 6 7 8 9 10 11 12 13
POD wg_ro_x, wg_sw_x, core_sw_a wg_pc_a, core_server wg_pc_b, core_server wg_pc_c, core_server wg_pc_d, core_server wg_pc_e, core_server wg_pc_f, core_server wg_pc_g, core_server wg_pc_h, core_server wg_pc_i, core_server wg_pc_j, core_server wg_pc_k, core_server wg_pc_l, core_server ISL
VLAN2
wg_pc_a 10.2.2.12
fa0/26 e0/1 (port A)
e0/2
wg_sw_a 10.1.1.10 VLAN13 fa0/26 e0/1 (port A)
...
fa0/1
wg_sw_l ISL 10.1.1.120
e0 wg_ro_a 10.1.1.11
wg_pc_l 10.13.13.12
e0/2
e0 wg_ro_l 10.1.1.121
fa0/12
fa0/24 core_ server ISL core_sw_a 10.x.x.1 10.1.1.2 © 1999, Cisco Systems, Inc.
www.cisco.com
ICND—737
Visual Objective SUBNET 10.1.1.0 10.2.2.0 10.3.3.0 10.4.4.0 10.5.5.0 10.6.6.0 10.7.7.0 10.8.8.0 10.9.9.0 10.10.10.0 10.11.11.0 10.12.12.0 10.13.13.0
VLAN 1 2 3 4 5 6 7 8 9 10 11 12 13
POD wg_ro_x, wg_sw_x, core_sw_a, core_sw_b wg_pc_a, core_server wg_pc_b, core_server wg_pc_c, core_server wg_pc_d, core_server wg_pc_e, core_server wg_pc_f, core_server wg_pc_g, core_server wg_pc_h, core_server wg_pc_i, core_server wg_pc_j, core_server wg_pc_k, core_server wg_pc_l, core_server
ISL fa0/24 core_ server 10.x.x.1 © 1999, Cisco Systems, Inc.
ISL
wg_pc_a 10.2.2.12
VLAN2 fa0/26 e0/1 (port A)
fa0/27 (port B)
wg_sw_a 10.1.1.10 wg_pc_l 10.13.13.12
VLAN13 fa0/26 (port A) e0/1
...
fa0/1
core_sw_a 10.1.1.2
www.cisco.com
fa0/27 (port B)
wg_sw_l 10.1.1.120 ISL fa0/12 fa0/13 fa0/14
ISL fa0/12 fa0/13 ISL fa0/14
...
ISL
fa0/1
core_sw_b 10.1.1.4 ICND—738
Summary After completing this chapter, you should be able to perform the following tasks: • Configuring VLAN • Configuring VTP • Configuring a trunk • Verifing Spanning Tree Operations
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—739
Review Questions 1. What are the three VTP modes? 2. Over what type of port can VTP advertisements be sent? 3. VLAN ID is carried in the ________ header. 4. How do we assign a VLAN to a port?
© 1999, Cisco Systems, Inc.
www.cisco.com
ICND—740
Related Documents
Vlan
November 2019 24
Vlan
June 2020 14
Vlan
November 2019 26
Vlan
May 2020 18
Vlan
April 2020 19
Vlan
April 2020 20More Documents from "Raj"
Access Ays Issa
May 2020 12
Gimble
May 2020 11
Sample Booklet
April 2020 15
Yogesh1
May 2020 14
Bg-science Of Self Realization - Part3
December 2019 41