Dell Force10 E300, Configuration Manual

Page: 685 / 1262

Object Tracking | 685
The tracking process uses a protocol-specific resolution value to convert the actual metric in the rout-
ing table to a scaled metric in the range 0 to 255. The resolution value is user-configurable and calcu-
lates the scaled metric by dividing a route's cost by the resolution value set for the route type:
• For ISIS, you can set the resolution in the range 1 to 1000, where the default is 10.
• For OSPF, you can set the resolution in the range 1 to 1592, where the default is 1.
• The resolution value used to map static routes is not configurable. By default, FTOS assigns a
metric of 0 to static routes.
• The resolution value used to map RIP routes is not configurable. The RIP hop-count is
automatically multiplied by 16 to scale it. For example, a RIP metric of 16 (unreachable) scales to
256, which considers a route to be DOWN.
Tracking Route Reachability
To configure object tracking on the reachability of an IPv4 or IPv6 route, use the following commands. To
remove object tracking, enter the
no track object-id
command.
Step Task Command Syntax Command Mode
1 Configure object tracking on the
reachability of an IPv4 or IPv6 route.
track
object-id
{
ip route
ip-address/prefix-len |
ipv6 route
ipv6-address/prefix-len }
reachability
[
vrf
vrf-name ]
Valid object IDs are from 1 to 65535.
Enter an IPv4 address in dotted decimal
format; valid IPv4 prefix lengths are from /
0 to /32.
Enter an IPv6 address in X:X:X:X::X
format; valid IPv6 prefix lengths are from /
0 to /128.
(Optional)
E-Series only : For an IPv4
route, you can enter a VRF name to specify
the virtual routing table to which the
tracked route belongs.
CONFIGURATION
2 (Optional) Configure the time delay
used before communicating a change
in the status of a tracked route.
delay
{[
up
seconds ] [
down
seconds ]}
Valid delay times are from 0 to 180
seconds. Default: 0.
OBJECT TRACKING
3 (Optional) Identify the tracked object
with a text description.
description
text
The text string can be up to 80 characters.
OBJECT TRACKING
4 (Optional) Display the tracking
configuration and the tracked object’s
status.
show track
object-id EXEC Privilege