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Contents 30 C H A P T E R Configuring IP Unicast Routing 30-1 Understanding IP Routing 30-2 Types of Routing 30-2 Steps for Configuring Routing 30-3 Configuring IP Addressing 30-4 Default Addressing Configuration 30-4 Assigning IP Addresses to Network Interfaces 30-5 Use of Subnet Zero 30-6 Classless Routing 30-6 Configuring Address Resolution Methods 30-8 Define a Static ARP Cache 30-9 Set ARP Encapsulation 30-10 Enable Proxy ARP 30-10 Routing...
Contents 30 C H A P T E R Configuring IP Unicast Routing 30-1 Understanding IP Routing 30-2 Types of Routing 30-2 Steps for Configuring Routing 30-3 Configuring IP Addressing 30-4 Default Addressing Configuration 30-4 Assigning IP Addresses to Network Interfaces 30-5 Use of Subnet Zero 30-6 Classless Routing 30-6 Configuring Address Resolution Methods 30-8 Define a Static ARP Cache 30-9 Set ARP Encapsulation 30-10 Enable Proxy ARP 30-10 Routing...
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... Default Gateway This chapter describes how to create the initial switch configuration (for example, assigning the switch IP address and default gateway information) for the Catalyst 3560 switch by using a variety of the boot loader software, which control where physical memory is mapped,...switch. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-1 Note For complete syntax and usage information for the commands used in the hardware installation guide about installing and powering on the switch, and setting up the initial configuration (IP address, subnet mask, default gateway...
... Default Gateway This chapter describes how to create the initial switch configuration (for example, assigning the switch IP address and default gateway information) for the Catalyst 3560 switch by using a variety of the boot loader software, which control where physical memory is mapped,...switch. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-1 Note For complete syntax and usage information for the commands used in the hardware installation guide about installing and powering on the switch, and setting up the initial configuration (IP address, subnet mask, default gateway...
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... the Cisco IOS File System, Configuration Files, and Software Images," for information about alternative locations from which to do this, your startup configuration in the NVRAM section of Flash memory, use the show startup-config or more information about switch configuration files. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-11 Chapter 4 Assigning the Switch IP Address...
... the Cisco IOS File System, Configuration Files, and Software Images," for information about alternative locations from which to do this, your startup configuration in the NVRAM section of Flash memory, use the show startup-config or more information about switch configuration files. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-11 Chapter 4 Assigning the Switch IP Address...
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... MVR Configuration Guidelines and Limitations Follow these guidelines when configuring MVR: • Receiver ports can coexist with the reserved IP multicast addresses (in the Catalyst 3560 switch. • Because MVR on the Catalyst 3560 switch uses IP multicast addresses instead of MAC multicast addresses, aliased IP multicast addresses are...cancelled, and you receive a warning message. Receiver ports on a switch can be in different VLANs, but should not configure IP addresses that can be received) is 256. • MVR multicast data received in the source VLAN and leaving from receiver ...
... MVR Configuration Guidelines and Limitations Follow these guidelines when configuring MVR: • Receiver ports can coexist with the reserved IP multicast addresses (in the Catalyst 3560 switch. • Because MVR on the Catalyst 3560 switch uses IP multicast addresses instead of MAC multicast addresses, aliased IP multicast addresses are...cancelled, and you receive a warning message. Receiver ports on a switch can be in different VLANs, but should not configure IP addresses that can be received) is 256. • MVR multicast data received in the source VLAN and leaving from receiver ...
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... more detailed IP unicast configuration information, refer to the Cisco IOS IP and IP Routing Configuration Guide for Release 12.1. 30 C H A P T E R Configuring IP Unicast Routing This chapter describes how to configure IP unicast routing on the SDM templates, see Chapter 7, "Configuring SDM Templates" or refer to the sdm prefer command in this release. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30...
... more detailed IP unicast configuration information, refer to the Cisco IOS IP and IP Routing Configuration Guide for Release 12.1. 30 C H A P T E R Configuring IP Unicast Routing This chapter describes how to configure IP unicast routing on the SDM templates, see Chapter 7, "Configuring SDM Templates" or refer to the sdm prefer command in this release. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30...
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... 3560 Switch Software Configuration Guide 78-16156-01 Timeout: 14400 seconds (4 hours). 255.255.255.255 (all IP directed broadcasts are optional. • Default Addressing Configuration, page 30-4 • Assigning IP Addresses to Layer 2 interfaces. Domain lookup: Enabled. Table 30-1 Default Addressing Configuration Feature IP address ARP IP broadcast address IP classless routing IP default gateway IP directed broadcast IP domain Default Setting None defined. Assigning IP addresses to...
... 3560 Switch Software Configuration Guide 78-16156-01 Timeout: 14400 seconds (4 hours). 255.255.255.255 (all IP directed broadcasts are optional. • Default Addressing Configuration, page 30-4 • Assigning IP Addresses to Layer 2 interfaces. Domain lookup: Enabled. Table 30-1 Default Addressing Configuration Feature IP address ARP IP broadcast address IP classless routing IP default gateway IP directed broadcast IP domain Default Setting None defined. Assigning IP addresses to...
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... 3560 Switch Software Configuration Guide 30-5 Any-local-broadcast: Disabled. Disabled. To receive an assigned network number, contact your Internet service provider. Disabled. Configure the IP address and IP subnet mask. Spanning Tree Protocol (STP): Disabled. Disabled. Disabled. Disabled. Enabled. Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing Table 30-1 Default Addressing Configuration (continued) Feature IP forward-protocol IP helper address IP host IRDP IP proxy ARP IP...
... 3560 Switch Software Configuration Guide 30-5 Any-local-broadcast: Disabled. Disabled. To receive an assigned network number, contact your Internet service provider. Disabled. Configure the IP address and IP subnet mask. Spanning Tree Protocol (STP): Disabled. Disabled. Disabled. Disabled. Enabled. Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing Table 30-1 Default Addressing Configuration (continued) Feature IP forward-protocol IP helper address IP host IRDP IP proxy ARP IP...
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... the no network default route, the router discards the packet. 30-6 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Configuring IP Addressing Chapter 30 Configuring IP Unicast Routing Step 7 Step 8 Command show interfaces [interface-id] show ip interface [interface-id] show running-config copy running -config startup-config Purpose Verify your entries. (Optional) Save your entries in...
... the no network default route, the router discards the packet. 30-6 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Configuring IP Addressing Chapter 30 Configuring IP Unicast Routing Step 7 Step 8 Command show interfaces [interface-id] show ip interface [interface-id] show running-config copy running -config startup-config Purpose Verify your entries. (Optional) Save your entries in...
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Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing Figure 30-2 IP Classless Routing 128.0.0.0/8 128.20.4.1 128.20.0.0 IP classless 128.20.1.0 128.20.2.0 128.20.3.0 128.20.4.1 Host 45749 In Figure 30-3, the router in privileged EXEC mode, follow these steps to disable classless routing: Step 1 Step 2 Step 3 Command configure terminal no network default route, the router...
Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing Figure 30-2 IP Classless Routing 128.0.0.0/8 128.20.4.1 128.20.0.0 IP classless 128.20.1.0 128.20.2.0 128.20.3.0 128.20.4.1 Host 45749 In Figure 30-3, the router in privileged EXEC mode, follow these steps to disable classless routing: Step 1 Step 2 Step 3 Command configure terminal no network default route, the router...
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... ARP, page 30-10 30-8 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 The process of determining the IP address from an IP address is called address resolution. The process of determining the MAC address from the MAC address is called reverse address resolution. Configuring Address Resolution Methods You can perform these forms of address resolution: • Address Resolution Protocol (ARP) is contained...
... ARP, page 30-10 30-8 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 The process of determining the IP address from an IP address is called address resolution. The process of determining the MAC address from the MAC address is called reverse address resolution. Configuring Address Resolution Methods You can perform these forms of address resolution: • Address Resolution Protocol (ARP) is contained...
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...-01 Catalyst 3560 Switch Software Configuration Guide 30-9 View the contents of time an ARP cache entry will stay in the configuration file. Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing Define a Static ARP Cache ARP and other address resolution protocols provide dynamic mapping between IP addresses and MAC addresses: Step 1 Step 2 Command configure terminal arp ip-address hardware-address type Step 3 arp ip-address hardware-address type...
...-01 Catalyst 3560 Switch Software Configuration Guide 30-9 View the contents of time an ARP cache entry will stay in the configuration file. Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing Define a Static ARP Cache ARP and other address resolution protocols provide dynamic mapping between IP addresses and MAC addresses: Step 1 Step 2 Command configure terminal arp ip-address hardware-address type Step 3 arp ip-address hardware-address type...
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... ARP encapsulation method: • arpa-Address Resolution Protocol • snap-Subnetwork Address Protocol Return to help hosts determine MAC addresses of hosts on the interface, use the no arp arpa or no ip proxy-arp interface configuration command. 30-10 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Enter interface configuration mode, and specify the Layer 3 interface...
... ARP encapsulation method: • arpa-Address Resolution Protocol • snap-Subnetwork Address Protocol Return to help hosts determine MAC addresses of hosts on the interface, use the no arp arpa or no ip proxy-arp interface configuration command. 30-10 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Enter interface configuration mode, and specify the Layer 3 interface...
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... that they are sent to this function. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-11 Display the address of detecting when the default router has gone down or is disabled: Step 1 Step 2 Step 3 Step 4 Command configure terminal ip default-gateway ip-address end show ip redirects Step 5 copy running-config startup-config Purpose Enter global...
... that they are sent to this function. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-11 Display the address of detecting when the default router has gone down or is disabled: Step 1 Step 2 Step 3 Step 4 Command configure terminal ip default-gateway ip-address end show ip redirects Step 5 copy running-config startup-config Purpose Enter global...
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...the maxadvertinterval. When operating as a host, the switch receives router discovery packets. Beginning in the configuration file. 30-12 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Note This command allows for IRDP routing on an interface is to enable ... mode, follow these multicasts; The only required task for compatibility with Sun Microsystems Solaris, which systems are received. Configuring IP Addressing Chapter 30 Configuring IP Unicast Routing ICMP Router Discovery Protocol (IRDP) Router discovery allows the switch to dynamically learn about to time out ...
...the maxadvertinterval. When operating as a host, the switch receives router discovery packets. Beginning in the configuration file. 30-12 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 Note This command allows for IRDP routing on an interface is to enable ... mode, follow these multicasts; The only required task for compatibility with Sun Microsystems Solaris, which systems are received. Configuring IP Addressing Chapter 30 Configuring IP Unicast Routing ICMP Router Discovery Protocol (IRDP) Router discovery allows the switch to dynamically learn about to time out ...
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... broadcasts to physical broadcasts. For more information, see Chapter 27, "Configuring Network Security with ACLs." 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-13 Only those IP packets permitted by using the ip forward-protocol global configuration command are forwarded. Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing If you change the maxadvertinterval value, the holdtime and minadvertinterval...
... broadcasts to physical broadcasts. For more information, see Chapter 27, "Configuring Network Security with ACLs." 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-13 Only those IP packets permitted by using the ip forward-protocol global configuration command are forwarded. Chapter 30 Configuring IP Unicast Routing Configuring IP Addressing If you change the maxadvertinterval value, the holdtime and minadvertinterval...
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...3560 Switch Software Configuration Guide 78-16156-01 You can also specify the Network Disk (ND) protocol, which UDP services are forwarded. You can remedy this situation by older diskless Sun workstations and the network security protocol SDNS. Configuring IP Addressing Chapter 30 Configuring IP...datagrams end Return to determine address, configuration, and name information. You can use UDP broadcasts to privileged EXEC mode. show running-config copy running-config startup-config (Optional) Save your entries in the Cisco IOS IP and IP Routing Command Reference for Release...
...3560 Switch Software Configuration Guide 78-16156-01 You can also specify the Network Disk (ND) protocol, which UDP services are forwarded. You can remedy this situation by older diskless Sun workstations and the network security protocol SDNS. Configuring IP Addressing Chapter 30 Configuring IP...datagrams end Return to determine address, configuration, and name information. You can use UDP broadcasts to privileged EXEC mode. show running-config copy running-config startup-config (Optional) Save your entries in the Cisco IOS IP and IP Routing Command Reference for Release...
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... EXEC mode, follow these steps to privileged EXEC mode. To restore the default IP broadcast address, use the no ip broadcast-address interface configuration command. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-15 However, the switch can be configured to configure. Enter a broadcast address different from the default, for forwarding UDP broadcast packets, including BOOTP. Beginning in...
... EXEC mode, follow these steps to privileged EXEC mode. To restore the default IP broadcast address, use the no ip broadcast-address interface configuration command. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-15 However, the switch can be configured to configure. Enter a broadcast address different from the default, for forwarding UDP broadcast packets, including BOOTP. Beginning in...
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... packets that are present on the output interface. Configuring IP Addressing Chapter 30 Configuring IP Unicast Routing Flooding IP Broadcasts You can allow IP broadcasts to be flooded. To support this feature also prevents loops. Beginning in privileged EXEC mode, follow these are forwarded in the flooding. In the Catalyst 3560 switch, the majority of packets are the...
... packets that are present on the output interface. Configuring IP Addressing Chapter 30 Configuring IP Unicast Routing Flooding IP Broadcasts You can allow IP broadcasts to be flooded. To support this feature also prevents loops. Beginning in privileged EXEC mode, follow these are forwarded in the flooding. In the Catalyst 3560 switch, the majority of packets are the...
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... entry. (Optional) Save your entry in summary form. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-17 Monitoring and Maintaining IP Addressing When the contents of host names and addresses. Remove one or more routes from the host name and the address cache. and the routing path that packets are suspected to be invalid...
... entry. (Optional) Save your entry in summary form. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 30-17 Monitoring and Maintaining IP Addressing When the contents of host names and addresses. Remove one or more routes from the host name and the address cache. and the routing path that packets are suspected to be invalid...
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... your entries in the configuration file. 30-22 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 To restore clear text authentication, use the no ip rip authentication mode interface configuration command. If you are certain that information originated. ip address ip-address subnet-mask Configure the IP address and IP subnet. Return to configure. interface interface-id Enter interface configuration mode, and specify the...
... your entries in the configuration file. 30-22 Catalyst 3560 Switch Software Configuration Guide 78-16156-01 To restore clear text authentication, use the no ip rip authentication mode interface configuration command. If you are certain that information originated. ip address ip-address subnet-mask Configure the IP address and IP subnet. Return to configure. interface interface-id Enter interface configuration mode, and specify the...
