User's Manual Part 2
Table Of Contents
- Monitoring Clients and System Operations
- Services, Password, Config, and Firmware Web Pages
- Diagnostics Web Screen and Help
- Configuration Using The Command Line Interface
- Command Levels
- Connections and Terminal Settings
- Accessing the CLI
- Configuration Example
- Navigating the CLI
- Read Level Command Descriptions
- enable
- exit
- Ping
- Show Commands
- show arp
- show cpu
- show dhcp-server interface bridge <0-4094>
- show dhcp-server interface ethernet <0>
- show dhcp-server interface wireless <0-1>
- show eap
- show http-server
- show iccf
- show interfaces
- show interfaces bridge [0-4094]
- show interfaces bridge <0-4094> fdb
- show interfaces bridge <0-4094> stp
- show interfaces ethernet [0]
- show interfaces wireless [associations]
- show interfaces wireless <0-1> associations
- show interfaces wireless <0-1>
- show interfaces wireless < 0-1> wds <1-6>
- show ip domainname
- show ip host
- show ip hostname
- show ip nameserver
- show ip route
- show ip ssh
- show logging
- show memory
- show serial
- show snmp-server
- show uptime
- show version
- show wds
- show flash:
- show running-config
- traceroute
- Enable Level Command Descriptions
- configure [terminal]
- Commands for Managing Configuration Files
- Configure Crypto (Generate Keys) Commands
- Configure Enable Secret Commands
- Configure HTTP-Server Commands
- Configure Interface Commands
- interface bridge <0-4094>
- add interface ethernet <0>
- no add interface ethernet <0>
- add interface wireless < 0-1>
- no add interface wireless < 0-1>
- add interface wireless < 0-1> wds <1-6>
- aging-time <10-1000000 seconds>
- dhcp-server
- dhcp-server broadcast-address
- no dhcp-server broadcast-address
- dhcp-server domain-name
- no dhcp-server domain-name
- dhcp-server gateway
- no dhcp-server gateway
- dhcp-server ip-pool
- no dhcp-server ip-pool
- dhcp-server lease <1-4294967295>
- no dhcp-server lease <1-4294967295>
- dhcp-server name-server
- no dhcp-server name-server
- dhcp-server ntp-server
- no dhcp-server ntp-server
- dhcp-server wins
- no dhcp-server wins
- exit
- forward-time <4-200 seconds>
- no forward-time
- hello-time <1-10 seconds>
- no hello-time
- iccf
- no iccf
- ip address
[secondary] - no ip address
[secondary] - ip address dhcp
- no ip address dhcp
- ip address dhcp release
- ip address dhcp renew
- ip broadcast-address
[secondary] - ip routing
- no ip routing
- max-age <6-200 seconds>
- no max-age
- path-cost interface
<0-65535> - path-cost interface
wds <1-6> <0-65535> - priority <0-65535>
- shutdown
- no shutdown
- stp
- no stp
- show
- shutdown
- source-nat interface
|ethernet <0>|wireless < 0-1>|wireless <0-1> wds <1-6>>
- interface ethernet 0
- interface wireless < 0-1|all>
- beacon-interval <0-8191>
- channel <1-11>
- DHCP Server Operation
- disable beacon-essid
- no disable beacon-essid
- EAP Commands (802.1x security)
- eap
- eap secret <1-2>
- eap rekey-interval <60-1800>
- eap server <1-2>
- no eap
- no eap server
- essid
- exit
- iccf
- no iccf
- ip address
- ip address
secondary - no ip address
[secondary] - ip address dhcp
- no ip address dhcp
- ip address dhcp renew
- ip address dhcp release
- ip broadcast
[secondary] - no ip broadcast-address [secondary]
- ip routing
- no ip routing
- key
<1-4> - sensitivity <1-3>
- show
- shutdown
- no shutdown
- source-nat interface
|ethernet <0>|wireless < 0-1>> - wds
- wep <1-4>
- no wep
- interface bridge <0-4094>
- Configure No Interface Commands
- Configure IP Commands
- Configure Log Commands
- Configure Multicast/Broadcast Rate Limiting
- Configure SNMP-Server Commands
- snmp-server
- snmp-server bind interface (wireless < 0-1>|ethernet 0|bridge <0-4094>)
- snmp-server community
RO|RW [ ] - snmp-server contact
- snmp-server engineID
- snmp-server host
- snmp-server host
- snmp-server host
[auth MD5|SHA [priv DES ]] - snmp-server location
- snmp-server name
- snmp-server user
[auth MD5|SHA [priv DES [ ]]]
- Configure No SNMP-Server Commands
- Configure Username Admin (Read Level) Secret
- Configure WDS (Wireless Distribution System)
- disable
- edit flash:
- exit
- no
- reboot
- support
- Network Monitoring
- Verifying Wi-Fi Operation
- Verification Process
- Wireless Client Does Not “Find” the Vivato Wi-Fi AP/Bridge
- Wireless Client Can’t Access Wi-Fi AP/Bridge Configuration Web Page
- Wireless Client Cannot Access the Local Wired Network
- Wireless Client Cannot Access an Outside Network
- Unauthorized Clients Are Able to Associate With The Wi-Fi AP/Bridge
- Connecting Through a WDS Connection
- Verification Process
- Dynamic Assignment of Client IP Addresses
- Updating AP/Bridge Firmware
- Index
154 Vivato Wi-Fi AP/Bridge User Guide Copyright © 2004, Vivato, Inc.
What is Network Address Translation?
Dynamic Assignment of Client IP Addresses
The Vivato Wi-Fi AP/Bridge can be configured as a DHCP server. In conjunction with network address
translation (NAT), this allows a totally different range of IP addresses to be used by your wireless clients
than are used by your wired network. This results in only one IP address being used for all traffic to/from
the AP/Bridge’s connection to the wired network. In the network illustrated below, the AP/Bridge’s
Ethernet 0 (eth0) port is connected to the wired network using IP address 192.168.8.7. DHCP server
operation is configured to issue IP addresses to wireless clients from a pool of addresses starting at
10.0.4.1. Even though they are on different subnets, the wireless clients are able to exchange packets
with the wired network by using NAT.
Figure 2—Using the AP/Bridge’s DHCP Server and NAT to Assign Client IP Addresses
What is Network Address Translation?
NAT translates the source IP address for packets to/from different subnets to allow communication
between them. In the figure above, the AP/Bridge replaces the source IP address on packets from
wireless clients (10.0.4.x) with the IP address assigned to the eth0 port (192.168.8.7). Since the eth0
port’s IP address is within the subnet used by the wired network, the packets are routed just as any other
packet on the wired network. When a packet intended for a wireless client is received on the eth0 port,
the AP/Bridge translates the IP address from the source 192.168.8.x address to the intended 10.0.4.x
address.
Ethernet
Server
Gateway/
Authentication
Internet
DHCP Server/
AP/Bridge
192.168.8.245
10.0.4.1
10.0.4.2
10.0.4.3
10.0.4.4
eth0
192.168.8.5
192.168.8.4
192.168.8.6
192.168.8.7
Name Server
192.168.8.185