Table of Contents
orouted [ -n ] status
When routed is started with the routed on command, it reads the /etc/dgateways file to create a list of potential default gateways. The /etc/dgateways file consists of a series of lines, each in the following format:
gateway is the name or address of a gateway to be used as a potential default gateway.
metric is a metric indicating the preference weighting of the gateway. 1 is the value to use for highest preference, 15 for the least. If no value is specified, metric defaults to the value 1.
There can be a maximum of 128 valid entries in the /etc/dgateways file - additional ones are ignored, but cause an error message. Duplicate gateway names or addresses are not allowed - only the first one encountered in the file is added to the table, and duplicates produce error messages.
After the list of gateways is created, routed selects the one with the lowest metric value to be used as the preferred default route. If there are multiple gateways available with the same metric value, it uses the one named first in the /etc/dgateways file.
routed then listens on udp port 520 for routing information packets. When a RIP request or reply packet is received, routed marks the gateway that sent the packet ALIVE. If the gateway has a better metric than the current default gateway, or has the same metric but is listed earlier in /etc/dgateways, the current default gateway is changed to the new gateway.
When a gateway is not heard from for 180 seconds, routed marks the gateway as DEAD, and if it was the current default gateway, selects a new default gateway if one is available.
In addition, when routed is running, it deletes dynamic routes, created by ICMP redirects, every 3 minutes.
routed off The route daemon may be turned off at any time with the routed off command. This stops all RIP snooping, default gateway selection, and dynamic route timeouts. The currently
maytag> routed status RIP snooping is on Gateway Metric State Time Last Heard alantec1 1 ALIVE Wed Mar 9 03:38:41 GMT 1994 groucho 1 ALIVE Wed Mar 9 03:38:41 GMT 1994 184.108.40.206 1 ALIVE Wed Mar 9 03:38:41 GMT 1994 220.127.116.11 1 ALIVE Wed Mar 9 03:38:41 GMT 1994 tphub1 2 ALIVE Wed Mar 9 03:38:41 GMT 1994 18.104.22.168 2 ALIVE Wed Mar 9 03:38:41 GMT 1994 22.214.171.124 3 ALIVE Wed Mar 9 03:38:41 GMT 1994 126.96.36.199 4 ALIVE Wed Mar 9 03:38:41 GMT 1994 188.8.131.52 5 ALIVE Wed Mar 9 03:38:41 GMT 1994 119 free gateway entries, 9 used
routed: duplicate gateway entry not allowed - a duplicate gateway name or address was found in the /etc/dgateways file. Only the first one found is used.
routed: unable to open socket - a networking error has prevented routed from initializing properly.
If the ``best'' entry selected from /etc/dgateways is DEAD when routed starts up, there may be a period of 180 seconds before a gateway that is ALIVE is selected.
Table of Contents