One possible use for the two Ethernet ports is to have one port on a private, secure network, and the other on an unsecured network.
Both Ethernet ports should not be on the same subnet. To enter settings for one or both network ports:
1. On the menu, click Configuration > Network Settings. The following page opens:
Figure 7-2 Network Settings Page
2. Enter the following information for one or both network ports:
Table 7-3 Network Port Settings
Network Port Setting Description
Network Port Settings Disabled: This is the default setting for Network Port 2.
Obtain from DHCP: Acquires IP address, subnet mask, and gateway from the DHCP server. (The DHCP server may provide the gateway, depending on its setup.) This is the default setting for Network Port 1. If you select this option, skip to step 3.
Obtain from BOOTP: Lets a network node request configuration information from a BOOTP "server" node. Skip to step 3.
Specify: Requires you to assign a static IP address manually. The administrator generally provides the IP address.
7: Network and Modem Settings
vSLM™ 2 Secure Management Software User Guide 55
IP Address If specifying an IP address, enter an IP address that is within a valid range, unique to your network, and in the same subnet mask as your workstation. There is no default.
Note: Enter all IP addresses in dot quad notation.
Subnet Mask If specifying an IP address, enter the network segment on which the vSLM 2 secure management software resides. There is no default.
Port Mode The method of data transmission (Auto, Half-Duplex, or Full-Duplex).
Port 1 and Port 2 IPv4 Filter
If you have added filter sets on the IPv4 Filter Definitions page, select the desired one. (See IPv4 Filters.)
Static IPv6 IPv6 addresses are written as 8 sets of 4-digit hexadecimal numbers separated by colons. There are several rules for modifying the address. For example,
1234:0BCD:1D67:0000:0000:8375:BADD:0057 may be shortened to 1234:BCD:1D67::8375:BADD:57.
Note: The vSLM 2 software stores all IP addresses internally using IPv6 format. When rendering these addresses for display, the vSLM 2 software uses IPv4 unless the address cannot be displayed in that format, in which case it uses shortened IPv6.
MAC Address (display only)
Also referred to as the Hardware or Ethernet address.
Port IPv6 (display only)
IPv6 addresses active on this network port.
Default Gateway IP address of the router for this network.
If this has not been set manually, any gateway acquired by DHCP for Network Port 1 or Network Port 2 displays.
All network traffic that matches the Network Port 1 IP address and subnet mask goes out Network Port 1. All network traffic that matches the Network Port 2 IP address and subnet mask goes out Network Port 2.
If you set a default gateway, the vSLM 2 secure management software sends any network traffic that does not match Network Port 1 or Network Port 2 to the default gateway for routing.
7: Network and Modem Settings
3. Configure up to three name servers, either by entering the IP addresses or by accepting the IP addresses assigned by DHCP:
Table 7-4 DNS Servers
4. Enter the following:
Ethernet Bonding Ethernet bonding is a way of joining two Ethernet interfaces into a single virtual interface for redundancy and/or load balancing. The vSLM 2 software supports four types of Ethernet bonding in addition to the default state of disabled.
Note: With bonding enabled, the IP/netmask settings for network port 1 are applied to the virtual bonding interface.
Select one of the following:
Active Backup: Only one of the two Ethernet interfaces will be active (involved in transmitting and receiving data) at any one time. If the vSLM 2 secure
management software detects that the Ethernet interface has lost network connectivity, the system makes the secondary interface the new active one after a few seconds (~3.5 - 4) of delay. (This delay length is also used with the other bonding settings.)
802.3ad Layer 2: IEEE 802.3ad-compliant dynamic link aggregation. This is a load-balancing strategy that uses the destination MAC address as the criterion for determining which interface to send each data frame out of.
802.3ad Layer 3+4: Much like 802.3ad Layer 2, but uses the destination IP and TCP/UDP port number to determine which interface to send data from.
Note: Both 802.3ad bonding modes require that both network interfaces share the same speed/duplex modes. This rule is currently enforced by the web interface, but not by the CLI.
Adaptive Load Balancing: This mode determines which interface to send data from by looking at the current load on each interface. It also controls which interface will receive a response by modifying the vSLM 2 secure management software's ARP replies before they are sent out. If a link failure occurs on one of the network ports, the system will fail over to the other interface.
Note: In theory, the active-backup and adaptive load balancing modes do not require any special network switch configuration, while the two 802.3ad modes do. The active-backup mode is recommended for most situations, as redundancy tends to be a more important goal than the relatively small increase in bandwidth (note that bonding two interfaces for load balancing does not double the available bandwidth because of protocol overhead issues).
IP Address Setting Description
#1 IP address of the primary name server. This entry is required if you choose to configure DNS (Domain Name Server) servers. Note: Assigning DNS servers allows FQDNs to be used in place of most IP addresses throughout the system.
#2 (optional) IP address of the secondary DNS name server.
#3 (optional) IP address of the tertiary DNS name server.
DHCP-Acquired DNS Servers (view only)
DNS servers automatically assigned by DHCP. The default setting for up to three servers is None.
7: Network and Modem Settings
vSLM™ 2 Secure Management Software User Guide 57
Table 7-5 Hostname
5. To save your entries, click the Update button.
Network Gateways
You can enter network gateway information. To enter gateway information:
1. On the Network - Settings page, click the Gateways tab. The following page opens:
Figure 7-6 Network Settings - Gateways Tab
2. Enter the following:
Table 7-7 Network Gateway
Hostname Setting Description
Hostname The default hostname is “SLM”. You can specify a fully qualified domain name (for example, SLM.lantronix.com). There is a 64-character limit (contiguous characters, no spaces).
Note: The hostname becomes the prompt in the command line interface.
Network Gateway Setting
Description
Default IP address of the router for this network.
If this has not been set manually, any gateway assigned by DHCP for Network Port 1 or Network Port 2 displays.
All network traffic that matches the Network Port 1 0IP address and subnet mask goes out Network Port 1. All network traffic that matches the Network Port 2 IP address and subnet mask goes out Network Port 2.
If you set a default gateway, the vSLM 2 secure management software sends any network traffic that does not match Network Port 1 or Network Port 2 to the default gateway for routing.
DHCP Acquired (view only)
Gateway assigned by DHCP for Network Port 1 or Network Port 2. The default setting is None.
7: Network and Modem Settings
3. To save your entries, click the Update button.
Precedence Indicates whether the gateway assigned by DHCP or the default gateway takes precedence. The default setting is Default. If you select DHCP, and both network ports are configured for DHCP, the vSLM 2 software gives precedence to the Network Port 1 gateway.
Alternate An alternate IP address of the router for this network, to be used if an IP address usually accessible through the default gateway fails to return one or more pings.
IP Address to Ping IP address to ping to determine whether to use the alternate gateway.
Ethernet Port to Ping
Ethernet port to use for the ping.
Delay between Pings
Number of seconds between pings
Number of Failed Pings
Number of pings that fail before the vSLM 2 secure management software uses the alternate gateway.
Network Gateway Setting
7: Network and Modem Settings
vSLM™ 2 Secure Management Software User Guide 59