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DHCP L2 Relay and L3 Relay, DHCP L2 Relay

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29. DHCP L2 Relay and L3 Relay 29 This chapter includes the following sections: • DHCP L2 Relay • DHCP L3 Relay on page 494 • Configure a DHCP L3 Switch on page 499 DHCP L2 Relay DHCP relay agents eliminate the need to have a DHCP server on each physical network. Relay agents populate the giaddr field and also append the Relay Agent Information option to the DHCP messages. DHCP servers use this option for IP addresses and other parameter assignment policies. These DHCP relay agents are typically IP routing-aware devices and are referred to as Layer 3 relay agents. In some network configurations, there is a need for Layer 2 devices to append the relay agent Information option as they are closer to the end hosts. Host #1 1/0/5 1/0/6 1/0/4 Layer 2 Switch #1 DHCP Server #1 Host #2 Figure 47. DHCP L2 Relay Chapter 29. DHCP L2 Relay and L3 Relay | 488

Section	Page
ProSafe M4100 and M7100 Managed Switches	1
Table of Contents	3
1. Documentation Resources	15
2. VLANs	16
Create Two VLANs	17
CLI: Create Two VLANS	17
Web Interface: Create Two VLANS	18
Assign Ports to VLAN2	19
CLI: Assign Ports to VLAN2	19
Web Interface: Assign Ports to VLAN2	19
Create Three VLANs	20
CLI: Create Three VLANS	20
Web Interface: Create Three VLANS	20
Assign Ports to VLAN3	22
CLI: Assign Ports to VLAN3	22
Web Interface: Assign Ports to VLAN3	23
Assign VLAN3 as the Default VLAN for Port 1/0/2	24
CLI: Assign VLAN3 as the Default VLAN for Port 1/0/2	24
Web Interface: Assign VLAN3 as the Default VLAN for Port 1/0/2	24
Create a MAC-Based VLAN	25
CLI: Create a MAC-Based VLAN	25
Web Interface: Assign a MAC-Based VLAN	26
Create a Protocol-Based VLAN	28
CLI: Create a Protocol-Based VLAN	28
Web Interface: Create a Protocol-Based VLAN	29
Virtual VLANs: Create an IP Subnet–Based VLAN	31
CLI: Create an IP Subnet–Based VLAN	31
Web Interface: Create an IP Subnet–Based VLAN	32
Voice VLANs	33
CLI: Configure Voice VLAN and Prioritize Voice Traffic	34
Web Interface: Configure Voice VLAN and Prioritize Voice Traffic	36
Private VLANs	44
Assign Private-VLAN Types (Primary, Isolated, Community)	46
CLI: Assign Private-VLAN Type (Primary, Isolated, Community)	46
Web Interface: Assign Private-VLAN Type (Primary, Isolated, Community)	46
Configure Private-VLAN Association	48
CLI: Configure Private-VLAN Association	48
Web Interface: Configure Private-VLAN Association	48
Configure Private-VLAN Port Mode (Promiscuous, Host)	49
CLI: Configure Private-VLAN Port Mode (Promiscuous, Host)	49
Web Interface: Configure Private-VLAN Port Mode (Promiscuous, Host)	49
Configure Private-VLAN Host Ports	50
CLI: Configure Private-VLAN Host Ports	50
Web Interface: Assign Private-VLAN Port Host Ports	51
Map Private-VLAN Promiscuous Port	52
CLI: Map Private-VLAN Promiscuous Port	52
Web Interface: Map Private-VLAN Promiscuous Port	52
3. LAG s	54
Create Two LAGs	55
CLI: Create Two LAGs	55
Web Interface: Create Two LAGs	55
Add Ports to LAGs	56
CLI: Add Ports to the LAGs	57
Web Interface: Add Ports to LAGs	58
Enable Both LAGs	59
CLI: Enable Both LAGs	59
Web Interface: Enable Both LAGs	59
4. Port Routing	60
Port Routing Configuration	61
Enable Routing for the Switch	62
CLI: Enable Routing for the Switch	62
Web Interface: Enable Routing for the Switch	62
Enable Routing for Ports on the Switch	62
CLI: Enable Routing for Ports on the Switch	63
Web Interface: Enable Routing for Ports on the Switch	63
Add a Default Route	65
CLI: Add a Default Route	65
Web Interface: Add a Default Route	65
Add a Static Route	66
CLI: Add a Static Route	66
Web Interface: Add a Static Route	67
5. VLAN Routing	68
Create Two VLANs	68
CLI: Create Two VLANs	69
Web Interface: Create Two VLANs	70
Set Up VLAN Routing for the VLANs and the Switch	73
CLI: Set Up VLAN Routing for the VLANs and the Switch	73
Web Interface: Set Up VLAN Routing for the VLANs and the Switch	73
6. RIP	75
Routing for the Switch	76
CLI: Enable Routing for the Switch	76
Web Interface: Enable Routing for the Switch	76
Routing for Ports	77
CLI: Enable Routing and Assigning IP Addresses for Ports 1/0/2 and 1/0/3	77
Web Interface: Enable Routing for the Ports	77
RIP for the Switch	78
CLI: Enable RIP on the Switch	79
Web Interface: Enable RIP on the Switch	79
RIP for Ports 1/0/2 and 1/0/3	79
CLI: Enable RIP for Ports 1/0/2 and 1/0/3	80
Web Interface: Enable RIP for Ports 1/0/2 and 1/0/3	80
VLAN Routing with RIP	82
CLI: Configure VLAN Routing with RIP Support	82
Web Interface: Configure VLAN Routing with RIP Support	84
7. OSPF	86
Inter-area Router	87
CLI: Configure an Inter-area Router	87
Web Interface: Configure an Inter-area Router	89
OSPF on a Border Router	92
CLI: Configure OSPF on a Border Router	92
Web Interface: Configure OSPF on a Border Router	93
Stub Areas	98
CLI: Configure Area 1 as a Stub Area on A1	98
Web Interface: Configure Area 1 as a Stub Area on A1	100
CLI: Configure Area 1 as a Stub Area on A2	103
Web Interface: Configure Area 1 as a Stub Area on A2	104
nssa Areas	107
CLI: Configure Area 1 as an nssa Area	107
Web Interface: Configure Area 1 as an nssa Area on A1	108
CLI: Configure Area 1 as an nssa Area on A2	111
Web Interface: Configure Area 1 as an nssa Area on A2	113
VLAN Routing OSPF	116
CLI: Configure VLAN Routing OSPF	118
Web Interface: Configure VLAN Routing OSPF	119
OSPFv3	122
CLI: Configure OSPFv3	122
Web Interface: Configure OSPFv3	124
8. ARP	127
Proxy ARP Examples	127
CLI: show ip interface	127
CLI: ip proxy-arp	128
Web Interface: Configure Proxy ARP on a Port	128
9. VRRP	129
VRRP on a Master Router	130
CLI: Configure VRRP on a Master Router	130
Web Interface: Configure VRRP on a Master Router	131
VRRP on a Backup Router	132
CLI: Configure VRRP on a Backup Router	132
Web Interface: Configure VRRP on a Backup Router	133
10. ACLs	136
MAC ACLs	137
IP ACLs	137
ACL Configuration	137
Set Up an IP ACL with Two Rules	138
CLI: Set Up an IP ACL with Two Rules	138
Web Interface: Set Up an IP ACL with Two Rules	139
One-Way Access Using a TCP Flag in an ACL	142
CLI:Configure One-Way Access Using a TCP Flag in an ACL	142
Web Interface: Configure One-Way Access Using a TCP Flag in an ACL	146
Use ACLs to Configure Isolated VLANs on a Layer 3 Switch	158
CLI: Configure One-Way Access Using a TCP Flag in ACL Commands	159
Web Interface: Configure One-Way Access Using a TCP Flag in an ACL	161
Set up a MAC ACL with Two Rules	169
CLI: Set up a MAC ACL with Two Rules	170
Web Interface: Set up a MAC ACL with Two Rules	170
ACL Mirroring	172
CLI: Configure ACL Mirroring	173
Web Interface: Configure ACL Mirroring	174
ACL Redirect	178
CLI: Redirect a Traffic Stream	178
Web Interface: Redirect a Traffic Stream	179
Configure IPv6 ACLs	183
CLI: Configure an IPv6 ACL	184
Web Interface: Configure an IPv6 ACL	186
11. CoS Queuing	190
CoS Queue Mapping	191
Trusted Ports	191
Untrusted Ports	191
CoS Queue Configuration	192
Show classofservice Trust	192
CLI: Show classofservice Trust	192
Web Interface: Show classofservice Trust	193
Set classofservice Trust Mode	193
CLI: Set classofservice Trust Mode	193
Web Interface: Set classofservice Trust Mode	193
Show classofservice IP-Precedence Mapping	194
CLI: Show classofservice IP-Precedence Mapping	194
Web Interface: Show classofservice ip-precedence Mapping	194
Configure Cos-queue Min-bandwidth and Strict Priority Scheduler Mode	195
CLI: Configure Cos-queue Min-bandwidth and Strict Priority Scheduler Mode	195
Web Interface: Configure CoS-queue Min-bandwidth and Strict Priority Scheduler Mode	195
Set CoS Trust Mode for an Interface	196
CLI: Set CoS Trust Mode for an Interface	197
Web Interface: Set CoS Trust Mode for an Interface	197
Configure Traffic Shaping	197
CLI: Configure traffic-shape	198
Web Interface: Configure Traffic Shaping	198
12. DiffServ	200
DiffServ	201
CLI: Configure DiffServ	202
Web Interface: Configure DiffServ	204
DiffServ for VoIP	218
CLI: Configure DiffServ for VoIP	218
Web Interface: Diffserv for VoIP	220
Auto VoIP	225
CLI: Configure Auto VoIP	226
Web Interface: Configure Auto-VoIP	228
DiffServ for IPv6	229
CLI: Configure DiffServ for IPv6	230
Web Interface: Configure DiffServ for IPv6	231
Color Conform Policy	237
CLI: Configure a Color Conform Policy	237
Web Interface: Configure a Color Conform Policy	238
13. IGMP Snooping and Querier	245
IGMP Snooping	246
CLI: Enable IGMP Snooping	246
Web Interface: Enable IGMP Snooping	246
Show igmpsnooping	246
CLI: Show igmpsnooping	247
Web Interface: Show igmpsnooping	247
Show mac-address-table igmpsnooping	247
CLI: Show mac-address-table igmpsnooping	248
Web Interface: Show mac-address-table igmpsnooping	248
External Multicast Router	248
CLI: Configure the Switch with an External Multicast Router	248
Web Interface: Configure the Switch with an External Multicast Router	249
Multicast Router Using VLAN	249
CLI: Configure the Switch with a Multicast Router Using VLAN	249
Web Interface: Configure the Switch with a Multicast Router Using VLAN	249
IGMP Querier	250
Enable IGMP Querier	251
CLI: Enable IGMP Querier	251
Web Interface: Enable IGMP Querier	252
Show IGMP Querier Status	254
CLI: Show IGMP Querier Status	254
Web Interface: Show IGMP Querier Status	254
14. MVR (Multicast VLAN Registration)	255
Configure MVR in Compatible Mode	256
CLI: Configure MVR in Compatible Mode	257
Web Interface: Configure MVR in Compatible Mode	259
Configure MVR in Dynamic Mode	263
CLI: Configure MVR in Dynamic Mode	263
Web Interface: Configure MVR in Dynamic Mode	265
15. Security Management	269
Port Security	269
Set the Dynamic and Static Limit on Port 1/0/1	270
CLI: Set the Dynamic and Static Limit on Port 1/0/1	270
Web Interface: Set the Dynamic and Static Limit on Port 1/0/1	270
Convert the Dynamic Address Learned from 1/0/1 to a Static Address	271
CLI: Convert the Dynamic Address Learned from 1/0/1 to the Static Address	272
Web Interface: Convert the Dynamic Address Learned from 1/0/1 to the Static Address	272
Create a Static Address	272
CLI: Create a Static Address	273
Web Interface: Create a Static Address	273
Protected Ports	273
CLI: Configure a Protected Port to Isolate Ports on the Switch	274
Web Interface: Configure a Protected Port to Isolate Ports on the Switch	276
802.1x Port Security	280
CLI: Authenticating dot1x Users by a RADIUS Server	280
Web Interface: Authenticating dot1x Users by a RADIUS Server	281
Create a Guest VLAN	286
CLI: Create a Guest VLAN	287
Web Interface: Create a Guest VLAN	288
Assign VLANs Using RADIUS	291
CLI: Assign VLANS Using RADIUS	292
Web Interface: Assign VLANS Using RADIUS	294
Dynamic ARP Inspection	297
CLI: Configure Dynamic ARP Inspection	298
Web Interface: Configure Dynamic ARP Inspection	299
Static Mapping	303
CLI: Configure Static Mapping	303
Web Interface: Configure Static Mapping	304
DHCP Snooping	305
CLI: Configure DHCP Snooping	306
Web Interface: Configure DHCP Snooping	307
Enter Static Binding into the Binding Database	309
CLI: Enter Static Binding into the Binding Database	309
Web Interface: Enter Static Binding into the Binding Database	310
Maximum Rate of DHCP Messages	310
CLI: Configure the Maximum Rate of DHCP Messages	311
Web Interface: Configure the Maximum Rate of DHCP Messages	311
IP Source Guard	312
CLI: Configure Dynamic ARP Inspection	312
Web Interface: Configure Dynamic ARP Inspection	313
16. SNTP	317
Show SNTP (CLI Only)	317
show sntp	317
show sntp client	318
show sntp server	318
Configure SNTP	319
CLI: Configure SNTP	319
Web Interface: Configure SNTP	320
Set the Time Zone (CLI Only)	321
Set the Named SNTP Server	321
CLI: Set the Named SNTP Server	322
Web Interface: Set the Named SNTP Server	322
17. Tools	324
Traceroute	324
CLI: Traceroute	325
Web Interface: Traceroute	325
Configuration Scripting	326
script	327
script list and script delete	327
script apply running-config.scr	328
Create a Configuration Script	328
Upload a Configuration Script	328
Pre-Login Banner	329
Create a Pre-Login Banner (CLI Only)	329
Port Mirroring	330
CLI: Specify the Source (Mirrored) Ports and Destination (Probe)	330
Web Interface: Specify the Source (Mirrored) Ports and Destination (Probe)	330
Dual Image	331
CLI: Download a Backup Image and Make It Active	332
Web Interface: Download a Backup Image and Make It Active	333
Outbound Telnet	334
CLI: show network	335
CLI: show telnet	335
CLI: transport output telnet	336
Web Interface: Configure Telnet	336
CLI: Configure the session-limit and session-timeout	337
Web Interface: Configure the Session Timeout	337
18. Syslog	339
Show Logging	340
CLI: Show Logging	340
Web Interface: Show Logging	340
Show Logging Buffered	342
CLI: Show Logging Buffered	342
Web Interface: Show Logging Buffered	343
Show Logging Traplogs	343
CLI: Show Logging Traplogs	343
Web Interface: Show Logging Trap Logs	343
Show Logging Hosts	344
CLI: Show Logging Hosts	344
Web Interface: Show Logging Hosts	345
Configure Logging for a Port	345
CLI: Configure Logging for the Port	345
Web Interface: Configure Logging for the Port	346
Email Alerting	347
CLI: Send Log Messages to [email protected] Using Account [email protected]	348
19. Switch Stacks	349
Switch Stack Management and Connectivity	349
The Stack Master and Stack Members	350
Stack Master	350
Stack Members	351
Stack Member Numbers	351
Stack Member Priority Values	352
Install and Power-up a Stack	352
Compatible Switch Models	352
Install a Switch Stack	353
Switch Firmware	353
Code Mismatch	354
Upgrade the Firmware	354
Migrate Configuration with a Firmware Upgrade	354
Copy Master Firmware to a Stack Member (Web Interface)	355
Configure a Stacking Port as an Ethernet Port	355
CLI: Configure a Stacking Port as an Ethernet Port	356
Web Interface: Configure a Stacking Port as an Ethernet Port	357
Stack Switches Using 10G Fiber	359
CLI: Stack Switches Using 10G Fiber	359
Web Interface: Stack Switches Using 10G Fiber	360
Add, Remove, or Replace a Stack Member	361
Add Switches to an Operating Stack	361
Remove a Switch from the Stack	362
Replace a Stack Member	363
Switch Stack Configuration Files	363
Preconfigure a Switch	364
Renumber Stack Members	365
CLI: Renumber Stack Members	366
Web Interface: Renumber Stack Members	366
Move the Stack Master to a Different Unit	368
CLI: Move the Stack Master to a Different Unit	368
Web Interface: Move the Stack Master to a Different Unit	368
20. SNMP	369
Add a New Community	369
CLI: Add a New Community	369
Web Interface: Add a New Community	370
Enable SNMP Trap	370
CLI: Enable SNMP Trap	370
Web Interface: Enable SNMP Trap	371
SNMP V3	371
CLI: Configure SNMP V3	372
Web Interface: Configure SNMP V3	372
sFlow	373
CLI: Configure Statistical Packet-Based Sampling of Packet Flows with sFlow	374
Web Interface: Configure Statistical Packet-based Sampling with sFlow	375
Time-Based Sampling of Counters with sFlow	377
CLI: Configure Time-Based Sampling of Counters with sFlow	377
Web Interface: Configure Time-Based Sampling of Counters with sFlow	377
21. DNS	378
Specify Two DNS Servers	378
CLI: Specify Two DNS Servers	378
Web Interface: Specify Two DNS Servers	378
Manually Add a Host Name and an IP Address	379
CLI: Manually Add a Host Name and an IP Address	379
Web Interface: Manually Add a Host Name and an IP Address	379
22. DHCP Server	381
Configure a DHCP Server in Dynamic Mode	381
CLI: Configure a DHCP Server in Dynamic Mode	381
Web Interface: Configure a DHCP Server in Dynamic Mode	382
Configure a DHCP Reservation	384
CLI: Configure a DHCP Reservation	385
Web Interface: Configure a DHCP Reservation	385
23. DHCPv6 Server	387
CLI: Configure DHCPv6	389
Web Interface: Configure an Inter-area Router	390
Configure Stateless DHCPv6 Server	394
CLI: Configure Stateless DNS Server	394
Web Interface: Configure Stateless DHCPv6 Server	395
24. Double VLANs and Private VLAN Groups	398
Double VLANs	398
CLI: Enable a Double VLAN	399
Web Interface: Enable a Double VLAN	399
Private VLAN Groups	402
CLI: Create a Private VLAN Group	403
Web Interface: Create a Private VLAN Group	404
25. Spanning Tree Protocol	408
Configure Classic STP (802.1d)	408
CLI: Configure Classic STP (802.1d)	408
Web Interface: Configure Classic STP (802.1d)	409
Configure Rapid STP (802.1w)	410
CLI: Configure Rapid STP (802.1w)	410
Web Interface: Configure Rapid STP (802.1w)	410
Configure Multiple STP (802.1s)	411
CLI: Configure Multiple STP (802.1s)	411
Web Interface: Configure Multiple STP (802.1s)	412
26. Tunnel	414
CLI: Create a Tunnel	415
Configure Switch GSM7328S_1	415
Configure Switch GSM7328S_2	416
Web Interface: Create a Tunnel	417
Configure Switch GSM7328S_1	417
Configure Switch GSM7328S_2	419
27. IPv6 Interface Configuration	422
Create an IPv6 Routing Interface	422
CLI: Create an IPv6 Routing Interface	422
Web Interface: Create an IPv6 Routing Interface	424
Create an IPv6 Network Interface	425
CLI: Configure the IPv6 Network Interface	426
Web Interface: Configure the IPv6 Network Interface	426
Create an IPv6 Routing VLAN	427
CLI: Create an IPv6 Routing VLAN	427
Web Interface: Create an IPv6 VLAN Routing Interface	429
Configure DHCPv6 Mode on the Routing Interface	432
CLI: Configure DHCPv6 mode on routing interface	432
Web Interface: Configure DHCPv6 mode on routing interface	433
28. PIM	435
PIM-DM	435
CLI: Configure PIM-DM	437
Web Interface: Configure PIM-DM	441
PIM-SM	460
CLI: Configure PIM-SM	461
Web Interface: Configure PIM-SM	465
29. DHCP L2 Relay and L3 Relay	488
DHCP L2 Relay	488
CLI: Enable DHCP L2 Relay	489
Web Interface: Enable DHCP L2 Relay	490
DHCP L3 Relay	494
Configure the DHCP Server Switch	494
Configure a DHCP L3 Switch	499
30. MLD	505
Configure MLD	506
CLI: Configure MLD	506
Web Interface: Configure MLD	508
MLD Snooping	519
CLI: Configure MLD Snooping	520
Web Interface: Configure MLD Snooping	521
31. DVMRP	524
CLI: Configure DVMRP	525
Web Interface: Configure DVMRP	531
32. Captive Portal	542
Captive Portal Configuration	543
Enable Captive Portal	543
CLI: Enable Captive Portal	543
Web Interface: Enable Captive Portal	544
Client Access, Authentication, and Control	545
Block a Captive Portal Instance	546
CLI: Block a Captive Portal Instance	546
Web Interface: Block a Captive Portal Instance	546
Local Authorization, Create Users and Groups	546
CLI: Create Users and Groups	547
Web Interface: Create Users and Groups	547
Remote Authorization (RADIUS) User Configuration	548
CLI: Configure RADIUS as the Verification Mode	549
Web Interface: Configure RADIUS as the Verification Mode	549
SSL Certificates	550
33. iSCSI	551
Enable iSCSI Awareness with VLAN Priority Tag	552
CLI: Enable iSCSI Awareness with VLAN Priority Tag	552
Web Interface: Enable iSCSI Awareness with VLAN Priority Tag	552
Enable iSCSI Awareness with DSCP	553
CLI: Enable iSCSI Awareness with DSCP	553
Web Interface: Enable iSCSI Awareness with DSCP	553
Set the iSCSI Target Port	554
CLI: Set iSCSI Target Port	554
Web Interface: Set iSCSI Target Port	554
Show iSCSI Sessions	555
CLI: Show iSCSI Sessions	555
Web Interface: Show iSCSI Sessions	555