Hello dear friend
there is no abnormal about ISIS, so we recommend you to increase the CPCARvalue of ISIS
Increase the CPCAR value of ISIS as per the following steps.
<HUAWEI> system-view
[HUAWEI] cpu-defendpolicy test
[HUAWEI-cpu-defend-policy-test] car packet-type isis cir 320
[HUAWEI-cpu-defend-policy-test] quit
[HUAWEI] cpu-defend-policytest global