Command Line Interface Guide
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clear arp-cache 652 clear arp-cache management 653 ip proxy-arp 654 show arp 654 33 DHCP and BOOTP Relay Commands . . . 657 bootpdhcprelay maxhopcount 659 bootpdhcprelay minwaittime 659 bootpdhcprelay cidridoptmode 660 show bootpdhcprelay 661 34 DHCPv6 Commands 663 dns-server 664 domain-name 665 ipv6 dhcp pool 666 ipv6 dhcp relay 667 ipv6 dhcp relay-agent-info-opt 668 ipv6 dhcp relay-agent-info-remote-id-subopt. . . . . . 669 ipv6 dhcp server 669 prefix-delegation 670 service dhcpv6 671 show ipv6 dhcp 672 Contents 23
clear arp-cache 652 clear arp-cache management 653 ip proxy-arp 654 show arp 654 33 DHCP and BOOTP Relay Commands . . . 657 bootpdhcprelay maxhopcount 659 bootpdhcprelay minwaittime 659 bootpdhcprelay cidridoptmode 660 show bootpdhcprelay 661 34 DHCPv6 Commands 663 dns-server 664 domain-name 665 ipv6 dhcp pool 666 ipv6 dhcp relay 667 ipv6 dhcp relay-agent-info-opt 668 ipv6 dhcp relay-agent-info-remote-id-subopt. . . . . . 669 ipv6 dhcp server 669 prefix-delegation 670 service dhcpv6 671 show ipv6 dhcp 672 Contents 23
Command Line Interface Guide
Page 56
... information. Link Dependency Configures and displays link dependency information. Table 1-1. CDP Interoperability Configures Cisco Discovery Protocol (CDP). DHCP l2 Relay Enables the Layer 2 DHCP Relay agent for rejection of invalid and malicious ARP packets. DHCP Snooping Configures DHCP snooping and whether an interface is trusted for IPv6. IGMP Snooping Configures IGMP snooping and displays IGMP configuration...
... information. Link Dependency Configures and displays link dependency information. Table 1-1. CDP Interoperability Configures Cisco Discovery Protocol (CDP). DHCP l2 Relay Enables the Layer 2 DHCP Relay agent for rejection of invalid and malicious ARP packets. DHCP Snooping Configures DHCP snooping and whether an interface is trusted for IPv6. IGMP Snooping Configures IGMP snooping and displays IGMP configuration...
Command Line Interface Guide
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.... PE binding clear ip dhcp snooping clears all DHCP Snooping entries. GC/IC ip dhcp snooping binding Configures a static DHCP Snooping binding. dhcp l2relay vlan Enables the L2 DHCP Relay agent for a set the DHCP Option 82 GC Remote ID for a VLAN. DHCP Snooping Command Description Mode* clear ip dhcp snooping Clears all DHCP Snooping statistics. ip dhcp snooping limit Controls the...
.... PE binding clear ip dhcp snooping clears all DHCP Snooping entries. GC/IC ip dhcp snooping binding Configures a static DHCP Snooping binding. dhcp l2relay vlan Enables the L2 DHCP Relay agent for a set the DHCP Option 82 GC Remote ID for a VLAN. DHCP Snooping Command Description Mode* clear ip dhcp snooping Clears all DHCP Snooping statistics. ip dhcp snooping limit Controls the...
Command Line Interface Guide
Page 90
...cachesize Configures the maximum number of type dynamic from PE the ARP cache. ip proxy-arp Enables proxy ARP on page 60. DHCP and BOOTP Relay (IPv4) Command bootpdhcprelay cidridoptmode Description Mode* Enables the circuit ID option and remote agent GC ID mode for retries. arp dynamicrenew ... management Removes all ARP entries of entries in GC the ARP cache. NOTE: *For the meaning of maximum request GC for BootP/DHCP Relay on the system. 90 Command Groups arp purge Causes the specified IP address to automatically GC renew dynamic ARP entries when they age ...
...cachesize Configures the maximum number of type dynamic from PE the ARP cache. ip proxy-arp Enables proxy ARP on page 60. DHCP and BOOTP Relay (IPv4) Command bootpdhcprelay cidridoptmode Description Mode* Enables the circuit ID option and remote agent GC ID mode for retries. arp dynamicrenew ... management Removes all ARP entries of entries in GC the ARP cache. NOTE: *For the meaning of maximum request GC for BootP/DHCP Relay on the system. 90 Command Groups arp purge Causes the specified IP address to automatically GC renew dynamic ARP entries when they age ...
Command Line Interface Guide
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...v6DP provided to a DHCPv6 client by the DHCPv6 server. ipv6 dhcp pool Enters IPv6 DHCP Pool Configuration mode. GC show bootpdhcprelay Shows the the BootP/DHCP Relay information. PE Command Groups 91 GC ipv6 dhcp relay Configures an interface for PE a specific interface. Configures a number... DHCPv6 GC remote-id-subopt the "remote-id" sub-option. prefix-delegation Defines Multiple IPv6 prefixes within a pool for BootP/DHCP Relay on the system. service dhcpv6 Enables DHCPv6 configuration on page 60. GC NOTE: *For the meaning of each Mode abbreviation, see...
...v6DP provided to a DHCPv6 client by the DHCPv6 server. ipv6 dhcp pool Enters IPv6 DHCP Pool Configuration mode. GC show bootpdhcprelay Shows the the BootP/DHCP Relay information. PE Command Groups 91 GC ipv6 dhcp relay Configures an interface for PE a specific interface. Configures a number... DHCPv6 GC remote-id-subopt the "remote-id" sub-option. prefix-delegation Defines Multiple IPv6 prefixes within a pool for BootP/DHCP Relay on the system. service dhcpv6 Enables DHCPv6 configuration on page 60. GC NOTE: *For the meaning of each Mode abbreviation, see...
Command Line Interface Guide
Page 252
...(config)#dhcp l2relay dhcp l2relay (Interface Configuration) Use the dhcp l2relay command to disable DHCP L2 Relay for an interface. Syntax dhcp l2relay no " form of this command to enable layer 2 DHCP relay functionality. Command Mode Global Configuration. dhcp l2relay (Global Configuration) Use the dhcp l2relay command to disable L2-DHCP relay. User Guidelines There are no dhcp l2relay Default Configuration DHCP L2 Relay is...
...(config)#dhcp l2relay dhcp l2relay (Interface Configuration) Use the dhcp l2relay command to disable DHCP L2 Relay for an interface. Syntax dhcp l2relay no " form of this command to enable layer 2 DHCP relay functionality. Command Mode Global Configuration. dhcp l2relay (Global Configuration) Use the dhcp l2relay command to disable L2-DHCP relay. User Guidelines There are no dhcp l2relay Default Configuration DHCP L2 Relay is...
Command Line Interface Guide
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... mode User Guidelines There are subject to L2 Relay processing. The list of VLANs. Default Configuration DHCP L2 Relay is discarded by default. Example console(config-if-1/g1)#dhcp l2relay trust dhcp l2relay vlan Use the dhcp l2relay vlan command to disable L2 DHCP Relay for a set of VLANs. Syntax dhcp l2relay vlan vlan-range no user guidelines for...
... mode User Guidelines There are subject to L2 Relay processing. The list of VLANs. Default Configuration DHCP L2 Relay is discarded by default. Example console(config-if-1/g1)#dhcp l2relay trust dhcp l2relay vlan Use the dhcp l2relay vlan command to disable L2 DHCP Relay for a set of VLANs. Syntax dhcp l2relay vlan vlan-range no user guidelines for...
Command Line Interface Guide
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... to enable the circuit ID option and remote agent ID mode for minwaittime is 0-100 seconds. 658 DHCP and BOOTP Relay Commands The range of valid values for BootP/DHCP Relay. Use the no user guidelines. Syntax bootpdhcprelay cidridoptmode arpshow arpw arpoptshshow arposhow arpwshow arp arpshoshow arpw arpshow ...ID and remote agent ID options. minwaittime Configure the minimum wait time. cidridoptmode........... The range of valid values for BootP/DHCP Relay on the system. Enable/Disable Circuit Id Option and Remote Agent Id Mode. console(config)#bootpdhcprelay ?
... to enable the circuit ID option and remote agent ID mode for minwaittime is 0-100 seconds. 658 DHCP and BOOTP Relay Commands The range of valid values for BootP/DHCP Relay. Use the no user guidelines. Syntax bootpdhcprelay cidridoptmode arpshow arpw arpoptshshow arposhow arpwshow arp arpshoshow arpw arpshow ...ID and remote agent ID options. minwaittime Configure the minimum wait time. cidridoptmode........... The range of valid values for BootP/DHCP Relay on the system. Enable/Disable Circuit Id Option and Remote Agent Id Mode. console(config)#bootpdhcprelay ?
Command Line Interface Guide
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... command in Global Configuration mode to configure the minimum wait time in seconds for BootP/DHCP Relay on the system. (Range: 1-16) Default Configuration The default integer configuration is 4. DHCP and BOOTP Relay Commands 659 began-booting field of the command to set the minimum wait time to ...the default value. Maximum allowable relay agent hops for BootP/DHCP Relay on the system. When the BOOTP relay agent receives a BOOTREQUEST message, it might use the seconds-sinceclient- Use the no form of the request...
... command in Global Configuration mode to configure the minimum wait time in seconds for BootP/DHCP Relay on the system. (Range: 1-16) Default Configuration The default integer configuration is 4. DHCP and BOOTP Relay Commands 659 began-booting field of the command to set the minimum wait time to ...the default value. Maximum allowable relay agent hops for BootP/DHCP Relay on the system. When the BOOTP relay agent receives a BOOTREQUEST message, it might use the seconds-sinceclient- Use the no form of the request...
Command Line Interface Guide
Page 660
...the circuit ID option and remote agent ID mode for BootP/DHCP Relay on the system. (Range: 0-100 seconds) Default Configuration 0 is the default configuration. 660 DHCP and BOOTP Relay Commands Syntax bootpdhcprelay cidridoptmode arpshow arpw arpoptshshow arposhow arpwshow arp ...Configuration Disabled is the default integer configuration. Syntax bootpdhcprelay minwaittiime integer no user guidelines. Minimum wait time for BootP/DHCP Relay. Use the 'no' form of 10 seconds. console(config)#bootpdhcprelay minwaittime 10 bootpdhcprelay cidridoptmode Use the bootpdhcprelay ...
...the circuit ID option and remote agent ID mode for BootP/DHCP Relay on the system. (Range: 0-100 seconds) Default Configuration 0 is the default configuration. 660 DHCP and BOOTP Relay Commands Syntax bootpdhcprelay cidridoptmode arpshow arpw arpoptshshow arposhow arpwshow arp ...Configuration Disabled is the default integer configuration. Syntax bootpdhcprelay minwaittiime integer no user guidelines. Minimum wait time for BootP/DHCP Relay. Use the 'no' form of 10 seconds. console(config)#bootpdhcprelay minwaittime 10 bootpdhcprelay cidridoptmode Use the bootpdhcprelay ...
Command Line Interface Guide
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Syntax show bootpdhcprelay command in User EXEC mode to display the BootP/DHCP Relay information. DHCP and BOOTP Relay Commands 661 console(config)#bootpdhcprelay cidridoptmode Circuit Id and Remote Agent Id Mode set Successfully. Command Mode Global Configuration mode User Guidelines This command has ...
Syntax show bootpdhcprelay command in User EXEC mode to display the BootP/DHCP Relay information. DHCP and BOOTP Relay Commands 661 console(config)#bootpdhcprelay cidridoptmode Circuit Id and Remote Agent Id Mode set Successfully. Command Mode Global Configuration mode User Guidelines This command has ...
Command Line Interface Guide
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console#show bootpdhcprelay Maximum Hop Count 4 Minimum Wait Time(Seconds 0 Circuit Id Option Mode Disable 662 DHCP and BOOTP Relay Commands Example The following example defines the Boot/DHCP Relay information.
console#show bootpdhcprelay Maximum Hop Count 4 Minimum Wait Time(Seconds 0 Circuit Id Option Mode Disable 662 DHCP and BOOTP Relay Commands Example The following example defines the Boot/DHCP Relay information.
Command Line Interface Guide
Page 663
DHCPv6 Commands This chapter explains the following commands: • clear ipv6 dhcp • dns-server • domain-name • ipv6 dhcp pool • ipv6 dhcp relay • ipv6 dhcp relay-agent-info-opt • ipv6 dhcp relay-agent-info-remote-id-subopt • ipv6 dhcp server • prefix-delegation • service dhcpv6 • show ipv6 dhcp • show ipv6 dhcp binding • show ipv6 dhcp interface • show ipv6 dhcp pool • show ipv6 dhcp statistics 32 DHCPv6 Commands 663
DHCPv6 Commands This chapter explains the following commands: • clear ipv6 dhcp • dns-server • domain-name • ipv6 dhcp pool • ipv6 dhcp relay • ipv6 dhcp relay-agent-info-opt • ipv6 dhcp relay-agent-info-remote-id-subopt • ipv6 dhcp server • prefix-delegation • service dhcpv6 • show ipv6 dhcp • show ipv6 dhcp binding • show ipv6 dhcp interface • show ipv6 dhcp pool • show ipv6 dhcp statistics 32 DHCPv6 Commands 663
Command Line Interface Guide
Page 667
... the special keyword duid-ifid, which causes the "remote ID" to relayed messages. console(config)#ipv6 dhcp pool addrpool console(config-dhcp6s-pool)# ipv6 dhcp relay Use the ipv6 dhcp relay command in Interface Configuration mode to configure an interface for DHCPv6 relay functionality. Syntax ipv6 dhcp relay {destination relay-address [interface vlan vlan-id] | interface vlan vlan-id}[remote...
... the special keyword duid-ifid, which causes the "remote ID" to relayed messages. console(config)#ipv6 dhcp pool addrpool console(config-dhcp6s-pool)# ipv6 dhcp relay Use the ipv6 dhcp relay command in Interface Configuration mode to configure an interface for DHCPv6 relay functionality. Syntax ipv6 dhcp relay {destination relay-address [interface vlan vlan-id] | interface vlan vlan-id}[remote...
Command Line Interface Guide
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... a number to a DHCPv6 client. console(config)#interface vlan 15 console(config-if-vlan15)#ipv6 dhcp relay destination 2020:1::1 ipv6 dhcp relay-agent-info-opt Use ipv6 dhcp relay-agent-info-opt command in determining an address to assign to represent the DHCPv6 Relay Agent Information Option. Agent information option. (Range: 54-65535) Default Configuration The default value...
... a number to a DHCPv6 client. console(config)#interface vlan 15 console(config-if-vlan15)#ipv6 dhcp relay destination 2020:1::1 ipv6 dhcp relay-agent-info-opt Use ipv6 dhcp relay-agent-info-opt command in determining an address to assign to represent the DHCPv6 Relay Agent Information Option. Agent information option. (Range: 54-65535) Default Configuration The default value...
Command Line Interface Guide
Page 669
...Range: 1-65535) Default Configuration The default value for suboption is 1. console(config)#ipv6 dhcp relay-agent-info-opt 100 ipv6 dhcp relay-agent-info-remote-id-subopt Use the ipv6 dhcp relay-agent-info-remote-id-subopt command in Interface Configuration mode to configure DHCPv6 server functionality on...Command Mode Global Configuration mode User Guidelines This command has no user guidelines. console(config)#ipv6 dhcp relay-agent-info-remote-idsubopt 100 ipv6 dhcp server Use the ipv6 dhcp server command in Global Configuration mode to configure a number to represent the DHCPv6 the "remote-...
...Range: 1-65535) Default Configuration The default value for suboption is 1. console(config)#ipv6 dhcp relay-agent-info-opt 100 ipv6 dhcp relay-agent-info-remote-id-subopt Use the ipv6 dhcp relay-agent-info-remote-id-subopt command in Interface Configuration mode to configure DHCPv6 server functionality on...Command Mode Global Configuration mode User Guidelines This command has no user guidelines. console(config)#ipv6 dhcp relay-agent-info-remote-idsubopt 100 ipv6 dhcp server Use the ipv6 dhcp server command in Global Configuration mode to configure a number to represent the DHCPv6 the "remote-...
Command Line Interface Guide
Page 717
... received from the DHCP messages received server. UDP client messages relayed The number of DHCP client messages relayed to which a packet is written for each such failure. The DHCP relay agent does not relay these packets. messages relayed UDP client The number of DHCP server messages relayed to the relay agent for each server. This count includes DHCP messages relayed as well as...
... received from the DHCP messages received server. UDP client messages relayed The number of DHCP client messages relayed to which a packet is written for each such failure. The DHCP relay agent does not relay these packets. messages relayed UDP client The number of DHCP server messages relayed to the relay agent for each server. This count includes DHCP messages relayed as well as...
Command Line Interface Guide
Page 718
.... entry Example console#show bootpdhcprelay. A log message is displayed in show ip helper statistics DHCP client messages received 8 DHCP client messages relayed 2 DHCP server messages received 2 DHCP server messages relayed 2 UDP client messages received 8 UDP client messages relayed 2 DHCP message hop count exceeded max 0 DHCP message with secs fields that are less than the minimum value. Packets that The...
.... entry Example console#show bootpdhcprelay. A log message is displayed in show ip helper statistics DHCP client messages received 8 DHCP client messages relayed 2 DHCP server messages received 2 DHCP server messages relayed 2 UDP client messages received 8 UDP client messages relayed 2 DHCP message hop count exceeded max 0 DHCP message with secs fields that are less than the minimum value. Packets that The...
User's Guide
Page 12
DHCP Snooping 446 DHCP Snooping Configuration 447 DHCP Snooping Interface Configuration 448 DHCP Snooping VLAN Configuration 451 DHCP Snooping Persistent Configuration 452 DHCP Snooping Static Bindings Configuration 454 DHCP Snooping Dynamic Bindings Summary 456 DHCP Snooping Statistics 457 DHCP Relay 459 DHCP Relay Global Configuration 459 DHCP Relay Interface Configuration 460 DHCP Relay Interface Statistics 462 DHCP Relay VLAN Configuration 463 8 Viewing Statistics and Remote Monitoring Overview 467 Table...
DHCP Snooping 446 DHCP Snooping Configuration 447 DHCP Snooping Interface Configuration 448 DHCP Snooping VLAN Configuration 451 DHCP Snooping Persistent Configuration 452 DHCP Snooping Static Bindings Configuration 454 DHCP Snooping Dynamic Bindings Summary 456 DHCP Snooping Statistics 457 DHCP Relay 459 DHCP Relay Global Configuration 459 DHCP Relay Interface Configuration 460 DHCP Relay Interface Statistics 462 DHCP Relay VLAN Configuration 463 8 Viewing Statistics and Remote Monitoring Overview 467 Table...
User's Guide
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... 537 Virtual Link Configuration 539 Virtual Link Summary 545 Route Redistribution Configuration 546 Route Redistribution Summary 548 Nonstop Forwarding OSPF Graceful Restart 549 BOOTP/DHCP Relay Agent 551 BOOTP/DHCP Relay Agent Configuration 552 IP Helper 553 IP Helper Global Configuration 554 IP Helper Interface Configuration 556 IP Helper Statistics 558 RIP 560 RIP...
... 537 Virtual Link Configuration 539 Virtual Link Summary 545 Route Redistribution Configuration 546 Route Redistribution Summary 548 Nonstop Forwarding OSPF Graceful Restart 549 BOOTP/DHCP Relay Agent 551 BOOTP/DHCP Relay Agent Configuration 552 IP Helper 553 IP Helper Global Configuration 554 IP Helper Interface Configuration 556 IP Helper Statistics 558 RIP 560 RIP...