484
E
ES4710BD 10 Slots L2/L3/L4 Chassis Switch
Usage Guide:
If a new receiver joins that interface when an interface is in the pruned state, the
interface will send a graft message to the upstream; if no graft ACK message from the
upstream is received, it will keep sending graft message to the upstream at regular
interval until an appropriate graft ACK is received.
Example:
Setting the interval for sending DVMRP graft messages to 10 seconds.
Switch (Config)#ip dvmrp graft-interval 10
19.5.2.2.4 ip dvmrp metric
Command:
ip dvmrp metric
<
metric_val
>
no ip dvmrp metric
Function:
Sets the interval for sending DVMRP report packets in the interface; the “
no ip dvmrp
metric
” command restores the default setting.
Parameters:
< metric_val>
is the route metric value, ranging from 1 to 32.
Default:
The default tag value is 1.
Command mode:
Interface Mode
Usage Guide
: The routing information in a DVMRP report packet includes a list of source network
addresses and metrics. When DVMRP report packet metric is configured on the
interface, all route entries received on that interface will be added the interface metric
value configured to form a new metric value. The metric value is used for poison
reverse calculation to determine upstream/downstream conditions. If a route metric
in the local switch is greater than 32 or equal to 32, then this route is unreachable. If
after calculation, the switch confirms itself in the downstream of a route, then a
report message containing that route will be sent to the upstream, with the metric
added by 32 to indicate the downstream position.
Example:
Configuring the DVMRP report packet metric to 2 on the interface.
Switch (Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip dvmrp metric 2
19.5.2.2.5 ip dvmrp nbr-timeout
Command:
ip dvmrp nbr-timeout <
time_val
>
no ip dvmrp nbr-timeout
Function:
Sets the timeout interval for DVMRP neighbors in the interface; the “
no ip dvmrp
nbr-timeout
” command restores the default setting.
Parameters:
< time_val>
is the time to timeout a neighbor, the valid range is 20 to 8000 seconds.
Default:
The default neighbor timeout setting is 35 seconds.
Command mode:
Interface Mode
Usage Guide:
When neighborhood established in DVMRP, a neighbor is considered nonsexist if no
probe message from that neighbor is received in the neighbor timeout interval, and
the neighborhood is terminated. Neighbor timeout interval must be greater than the
interval for sending probe messages.
Example:
Configuring the DVMRP neighbor timeout interval for the interface as 30 seconds.
Switch (Config)#interface vlan 1
Switch(Config-If-vlan1)#ip dvmrp nbr-timeout 30
