Znyx Networks bh5700 Manuale Utente

zl3d - Layer 3 daemon for the OpenArchitect switch.

zl3d [-h <host_name>] [-t <msecs>] [-b] [-e] [-l] [-n] [-d 

<level>] <iface ..>

zl3d is run after the network interfaces are created and initialized with zconfig, and started 
with ifconfig(1M). zl3d listens for Netlink messages from the kernel and monitors the 
Linux network routing tables for routing updates. When an update occurs, if appropriate, zl3d 
updates the corresponding routing tables in the silicon so that Layer 3 forwarding is done in the 
switch at line speed. zl3d also ages the switch host route entries.

zl3d attempts to keep the Linux route cache and the switch host route table consistent. When a 
host route table entry is in use, zl3d updates the Linux route cache. Host route table entries are 
deleted when Linux removes the corresponding entry from the route cache. Similarly, network 
route entries are removed when the corresponding Linux FIB table entry is deleted.

-h <hostname>

Specifies which host to monitor. By default, zl3d 

monitors the OpenArchitect switch that is locally connected 
(i.e., the one that is on the local PCI bus).

-t <msec> Sets the timeout value. By default, zl3d wakes up 

every 15 seconds (15000 ms) to look for updates to the Linux 
routing tables and to do aging processing of route table entries 

on the switch.

-b

Do not background the zl3d process.

-e

Enables additions of a default route to the L3 network route 

table.

-l

Leave hardware tables intact on exit.

-n

Writes the proc table entry. zl3d writes 3/2 of it’s timeout 

value to /proc/net/sys/ipv4/route/route_expires. The Linux kernel uses 
this value as an expiration time for cache routes updated by 

zl3d. 

-d <level> Sets the level of debugging output required by zl3d. 
The default level is one (1). Setting the debug level higher 

Ethernet Switch Blade User's Guide

release  3.2.2j

page  304