Sun Microsystems APOLLO OC48, Инструкция по установке и эксплуатации

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A P P E N D I X
B
Receive Load Balancing
The device driver supports four distinct receive buffer queues. The on-board
microprocessor is parses the headers of received packets to determine which of the
queues to deliver the received packet to.
In TCP/IP networking, the received packets can be fanned out to multiple CPUs for
processing. Based on the TCP port numbers, packets will be placed on one of four
queues to be sent to four different processors.
The way the TCP IP header is parsed is determined by the Virtual IP Table (VIP
Table). The VIP table contains a list of up to 127 IP addresses, which will be searched
by the on-board microprocessor for each received packet. If it finds a match, the
queue number for that entry is the base queue number to use for receiving the
packets. This queue number will be further modified according to the policy of the
entry. Add the VIP table entry to the file
/etc/ips/ips.cf
. The following shows
the format of the VIP Table entry:
■
Interface: The driver’s name and interface’s instance. For example,
ips0
■
Entry: The entry number of the VIP Table. Up to 128 entries can be supported
■
IP Address: IPv4 or IPv6 address
■
Queue#: The base receive buffer queue (one of 4 Rx buffer queues). Note: This
may or may not be the target queue# depending on the TCP packet’s port number
and the Policy used.
■
Policy:
0 - no policy. Use the Queue# from the table entry.
1 - 1-bit port based load balancing: add the lower bit of the TCP source port
number to the Queue# from the entry.
vipentry:
# Interface Entry# IP Address Queue# Policy
ipsN 0 ~ 127 x.x.x.x 0 ~ 3 0 ~ 3