Dell PowerConnect B-RX Configuration Manual page 979

The neighbor parameter closes the device's adjacencies with its IS-IS neighbors and clears the
neighbor statistics.
The route [<ip-address> <subnet-mask> | <ip-address>/<prefix> ] parameter clears the IS-IS
route table or the specified matching route.
The traffic parameter clears the PDU statistics.
NOTE
The traffic option also clears the values displayed in the show isis interface command's Control
Messages Sent and Control Messages Received fields.
BigIron RX Series Configuration Guide
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Clearing IS-IS information
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