7: Network and Modem Settings
SLM User Guide
64
3. Configure up to three name servers, either by entering the IP addresses or by accepting the IP
addresses assigned by DHCP:
Table 7-5 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 SLM 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 SLM 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 SLM'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
.
Network Port Setting
Description
Summary of Contents for SLM
Page 152: ...9 Ethernet Device Management SLM User Guide 152 Figure 9 19 Device Page Persistent Connection ...
Page 237: ...11 Operation and Maintenance SLM User Guide 237 Figure 11 29 Services Page Status Tab ...
Page 238: ...11 Operation and Maintenance SLM User Guide 238 Continuation of Figure 11 29 part 2 of 3 ...
Page 359: ...SLM User Guide 359 Description Shows the progress of background tasks ...