User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
17-15
B
ASIC
SLB C
OMMANDS
The switch will distribute traffic in round-robin fashion among the pools active nodes
with the highest priority. If all nodes at that priority level go down or hit a session limit
maximum, all new sessions will be directed to the nodes at the next lowest priority
level. The switch continually monitors the status of the down nodes. As each node
comes back up, the switch distributes traffic according to the priorities.
For example, with a pool that has six nodes divided evenly into two priority levels (2
and 1) all sessions will be evenly distributed via round-robin to the nodes at priority
level 2. If one of the priority level 2 nodes goes down, all of the traffic will be assigned
to the remaining level 2 nodes. If all of the priority level 2 nodes are down, all sessions
will be directed to the priority level 1 nodes. If one of the level 2 nodes comes back up,
all new sessions will be assigned to it.
B
ASIC
SLB C
OMMANDS
Table 17-2 describes basic SLB commands.
Table 17-2: Basic SLB Commands
Command Description
clear slb connections [<vipname> |
<ipaddress>:{<L4Port>} | all]
Clears the active connections.
config slb pool <poolname> add
<ipaddress>:<L4Port> {ratio <ratio> | priority
<priority>}
Adds a physical server (node) to a server
pool. When a new node is added,
ping-check is automatically enabled.
config slb pool <poolname> delete
<ipaddress>:<L4Port>
Deletes a physical server from a server
pool.
config slb pool <poolname> lb-method [round-robin
| ratio | priority | least-connections]
Configures the SLB load balancing method.
config slb l4-port <L4Port> [treaper_timeout
<seconds> | udp-idle-timeout <seconds>]
Configures the inactive period for TCP or
UDP before the connection is aged out.
config vlan <name> slb-type [server | client | both |
none]
Marks a VLAN to be either a server VLAN,
or a client VLAN. If the server also
originates connections to other servers, set
the slb-type to both.