WS-C3750X-24 cpu 超高

[shuihongwu]

WS-C3750X-24 cpu 超高
发现其中一个进程占用率很高
185 10783875 934041 11545 68.00% 58.36% 59.15% 0 HL3U bkgrd proce
求大神帮忙看下是什么原因导致

[blgao · Accepted solution]

Hl3u bkgrd process - manages quite a few background tasks like...
- Hardware Arp throttling house keeping tasks
- Retry adjs/Fib in case of an out of hardware resource condition
- sending out gratuitous arps in certain scenarios like master switchover
- proxy arp house keeping functions
- ICMP redirect processing
- TTL ICMP error generation in some conditions
- handling correct route forwarding in an output acl full condition
Workaround:
- Eliminate source of ARP Incomplete entries
- Downgrading to 12.2(55)SE train might help
- In 15.0.2 train, we can disable the ARP retry feature enhancement which is causing high CPU byusing the command "no ip arp incomplete enable"

[blgao]

版本号多少

[shuihongwu]

blakegao 发表于 2015-2-25 13:04
版本号多少

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 30 WS-C3750X-24 15.0(2)SE2 C3750E-UNIVERSALK9-M
CPU隔一段时间就到99%

[exCCNA]

shuihongwu 发表于 2015-2-25 13:09
Switch Ports Model SW Version SW Image
------ ----- ---- ...

可参考下列网址：
https://supportforums.cisco.com/discussion/11788206/hl3u-bkgrd-proce-high-cpu-usage-3750x-switch
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/68461-high-cpu-utilization-cat3750.html#topic5

[shuihongwu]

本帖最后由 shuihongwu 于 2015-3-3 12:55 编辑

blakegao 发表于 2015-2-28 10:28
Hl3u bkgrd process - manages quite a few background tasks like...
- Hardware Arp throttling house ...

非常感谢，我等下午都下班了去调试下看看。
ICMP重定向之前关过了，应该是ARP方面的问题
通过no ip arp incomplete enable
已经解决
感谢
switch_12A_2#show processes cpu | include HL3U bkgrd proce
185 75504863 2524424 29909 0.00% 5.14% 22.68% 0 HL3U bkgrd proce

[shuihongwu]

exCCNA 发表于 2015-2-26 15:16
可参考下列网址：
https://supportforums.cisco.com/discussion/11788206/hl3u-bkgrd-proce-high-cpu-us ...

我去研究下

[shuihongwu]

exCCNA 发表于 2015-2-26 15:16
可参考下列网址：
https://supportforums.cisco.com/discussion/11788206/hl3u-bkgrd-proce-high-cpu-us ...

我去研究下

[cpmld-199]

:),学习了，谢谢楼主分享和版主指导。

[764963038cisco]

学习了，非常好！