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Cisco Aironet 350 Series Workgroup Bridge Software Configuration Guide
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Preface
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Workgroup Bridge Overview
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Using the Console System
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Using the Configuration Menu
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Configuring the Radio Network
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Configuring the Ethernet Port
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Setting Network Identifiers
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Viewing Statistics
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Using the Association Table
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Using Filters
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Setting Up Event Logs
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Performing Diagnostics
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Appendix A
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Appendix B
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Table Of Contents
Using the Configuration Identity Menu
Using the Internet Bootstrap Protocol and Dynamic Host
Configuration Protocol (Bootp/DHCP)Using BOOTP Protocol for File Downloads
Establishing a Node Name (Name)
Configuring DHCP Servers (Class)
Assigning an IP Address (Inaddr)
Specifying the IP Subnet Mask (Inmask)
Specifying the Internet Default Gateway (Gateway)
Configuring the IP Routing Table (Routing)
Displaying the Routing Table (Display)
Entering an Infrastructure Route (Net)
Setting SNMP Location and Contact Identifiers
(Location, Contact)
Setting Network Identifiers
This chapter describes the procedures for setting the bridge's network identifiers.
Here's what you'll find in this chapter:
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Using the Configuration Identity Menu
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Using the Configuration Identity Menu
From the Configuration Identity menu, you determine how the bridge obtains its IP address and assign required identifiers. The network uses these identifiers to recognize the bridge and communicate with it.
Navigation: Choose Main > Configuration > Identity
Using the Internet Bootstrap Protocol and Dynamic Host
Configuration Protocol (Bootp/DHCP)The Bootp/DHCP option allows you to select Bootstrap Protocol (BOOTP) and Dynamic Host Configuration Protocol (DHCP) for dynamic assignment of IP addresses. There are three options:
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Here is the BOOTP/DHCP process:
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Using BOOTP Protocol for File Downloads
BOOTP servers can also define a boot file for the bridge to download. This feature of BOOTP is especially suited for updating new firmware. A downloaded file is assumed to be a configuration file in the format produced by the configuration dump command. A Trivial File Transfer Protocol (TFTP) dialog retrieves the file from the server.
The system processes the configuration file as though the commands were being typed in real time. The commands in the file modify the current configuration.
Note
Once the configuration is processed, the name stored in the diagnostics load FTP filename parameter is assumed to be the name of a firmware file to download. If the parameter is not empty, the bridge uses the TFTP protocol to load the file into RAM.
If the firmware is different from the current version, the bridge programs the flash memory with the new code and restarts to execute it. If the firmware is the same, the bridge discards the loaded file and continues normal operation.
Establishing a Node Name (Name)
The Name option establishes a unique node name for the bridge. The name is a text string of up to 20 characters that appears on all Telnet and browser screens. It is passed in association messages to other nodes on the radio network. The node name identifies the bridge in the association table on any Cisco Aironet Access Point. See Chapter 8, "Using the Association Table."
Configuring DHCP Servers (Class)
Use the Class option to type a class ID for a client node. The DHCP server determines how to respond based on the class ID.
Assigning an IP Address (Inaddr)
The Inaddr option establishes a static IP address for the bridge. An IP address must be assigned to the bridge before it can be accessed by Telnet, HTTP, or SNMP.
The IP address can be assigned manually from the Configuration Identity menu or by a BOOTP or DHCP server on the network or wired LAN. See "Using the Bootstrap Protocol and Dynamic Host Configuration Protocol (BOOTP/DHCP)" earlier in this chapter.
Setting a static IP address automatically turns BOOTP and DHCP off.
Specifying the IP Subnet Mask (Inmask)
The Inmask option assigns an IP subnetwork mask to the bridge. The subnetwork mask determines the portion of the IP address that represents the subnet ID. A digit in a bit of the mask indicates that the corresponding bit in the IP address is part of the subnet ID. This item may also be assigned by a BOOTP or DHCP server. See "Using the Internet Bootstrap Protocol or DHCP Protocol (BOOTP/DHCP)" earlier in this chapter.
Specifying the Internet Default Gateway (Gateway)
The Gateway option identifies the default IP address to which packets are forwarded to reach another subnet of the infrastructure when none of the other table entries apply. This address may also be assigned by a BOOTP or DHCP server. If the value is left as 0.0.0.0, the bridge uses the true destination address and assumes that a gateway will respond to ARP requests for the remote destination.
Configuring the IP Routing Table (Routing)
The Routing option controls how IP packets originating from the bridge are forwarded.
Navigation: Choose Main > Configuration > Identity> Routing
If the destination IP address exactly matches a host entry in the routing table, the packet is forwarded to the MAC address corresponding to the next-hop IP address from the table entry.
If the destination address is on another subnet and matches the infrastructure portion of a net entry in the table (using the associated subnet mask), the packet is forwarded to the MAC address corresponding to the next-hop IP address from the table entry.
If the destination address is on another subnet and does not match any entry in the table, the packet is forwarded to the MAC address corresponding to the default gateway's IP address.
Displaying the Routing Table (Display)
The Display option displays the entries in the routing table.
Navigation: Choose Main > Configuration > Identity > Routing > Display
The Flags column displays letters identifying the type of entry:
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The Use column indicates the number of packets that have been forwarded using this table entry.
In the sample table, all addresses that match 149.23.166.xxx are forwarded to the router at address 149.23.165.71. Any packet for address 149.23.130.20 is forwarded to the address 149.23.165.60. All other packets not on the current subnet are forwarded to the router at 149.23.165.50.
Entering a Host Route (Host)
The Host option controls the forwarding of packets to a single host address. You are prompted for the host's IP address along with the IP address to which the packets should be forwarded to reach the host.
Entering an Infrastructure Route (Net)
The Net option controls the forwarding of packets to another subnet of the infrastructure. You are prompted for the net's IP address along with the subnet mask to be applied during the address comparison. You are also prompted for the IP address to which the packets should be forwarded to reach the infrastructure.
Deleting a Route (Delete)
The Delete option removes entries from the routing table. You can delete all entries or only specific IP addresses.
Using DNS Server Names (DNS1)
The Dns1 option allows the use of domain name system (DNS) server names instead of using numerical IP addresses for management packet routing. Type the IP address of the DNS on the system.
Using DNS Server Names (DNS2)
The Dns2 option provides a secondary DNS server name.
Using Name Domains (Domain)
The Domain option provides the ability to use a domain name, thus allowing shortened entries for DNS names.
Setting SNMP Location and Contact Identifiers
(Location, Contact)The Location and Contact options specify the location of the SNMP workstation and the contact name of the individual responsible for managing it in the event of problems. You can type up to 20 characters for each item.
