RE: WS-C3750X-48T-S CPU high !!!

Please disable proxy arp on every interface;

Check all your masks

-Joe

From: Somyot Ch [mailto:somyot.ch_at_gmail.com]
Sent: Monday, November 08, 2010 4:45 AM
To: Joseph L. Brunner
Subject: Re: WS-C3750X-48T-S CPU high !!!

Dear Joe,

Thank you for your response.
1) The 498 static route point to 192.168.229.146(F5 VIP).
ip route [] [] 192.168.229.146
Another 17 static point to 192.168.229.180(Firewall)
ip route [] [] 192.168.229.180
And 1 default route to 192.168.229.113

3750#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.229.145 - d0d0.fdee.7846 ARPA Vlan2296
Internet 192.168.229.146 40 0400.0000.0008 ARPA Vlan2296
Internet 192.168.229.180 0 0010.dbff.1003 ARPA Vlan2298
Internet 192.168.229.179 - d0d0.fdee.7847 ARPA Vlan2298
Internet 192.168.229.116 - d0d0.fdee.7845 ARPA Vlan2294
Internet 192.168.229.113 142 0000.0c07.ac01 ARPA Vlan2294

Firewall--Vlan2298--3750--Vlan2294--[default static route]7606
                                l
                           Vlan2296--F5

2) This is result of show interface vlan
3750#sh inte vlan 1 | i broadcast
     Received 0 broadcasts (0 IP multicasts)
3750#sh inte vlan 1121 | i broadcast
     Received 0 broadcasts (0 IP multicasts)
3750#sh inte vlan 1203 | i broadcast
     Received 0 broadcasts (0 IP multicasts)
3750#sh inte vlan 1293 | i broadcast
     Received 0 broadcasts (654 IP multicasts)
3750#sh inte vlan 2294 | i broadcast
     Received 0 broadcasts (0 IP multicasts)
3750#sh inte vlan 2296 | i broadcast
     Received 0 broadcasts (49 IP multicasts)
3750#sh inte vlan 2298 | i broadcast
     Received 0 broadcasts (0 IP multicasts)

Thank you,
Somyot
On Mon, Nov 8, 2010 at 4:21 PM, Joseph L. Brunner
<joe_at_affirmedsystems.com<mailto:joe_at_affirmedsystems.com>> wrote:
1. You are pointing a static route to an interface or something it cannot
arp.

2. You are running broadcast/multicast on vlan with an SVI and need to
implement CoPP to protect the device.

Let us know which.

-Joe

-----Original Message-----
From: nobody_at_groupstudy.com<mailto:nobody_at_groupstudy.com>
[mailto:nobody_at_groupstudy.com<mailto:nobody_at_groupstudy.com>] On Behalf Of
Somyot Ch
Sent: Monday, November 08, 2010 3:43 AM
To: ccielab_at_groupstudy.com<mailto:ccielab_at_groupstudy.com>
Subject: WS-C3750X-48T-S CPU high !!!

Dear Expert,

I have some problem with CPU utilization of WS-C3750X-48T-S
(C3750E-UNIVERSALK9NPE-M), Version 12.2(55)SE. My vendor already implement
many static route. Now it has no traffic utilization through it. Anybody
know this is bug of IOS or not?? I try to see process with "sh process cpu |
ex 0.00" but don't see some process take cpu.

3750#sh ip route sum
IP routing table name is Default-IP-Routing-Table(0)
IP routing table maximum-paths is 32
Route Source Networks Subnets Overhead Memory (bytes)
connected 1 4 320 760
static 5 516 33344 79192
internal 174 203928
Total 180 520 33664 283880
=============================================
3750#sh process cpu his

100 *
 90 * *
 80 * * * * *
 70 ** * ** ** * * * * * * *
 60 ** ** * ** ** ** * * * * ** * * * ** * *
 50 ** ***** ** ** ** ** * * * * ***** * * * ** * ** **** * *
 40 ** **************** *** ** * ****************** ** ***************
 30 **********************************************************************
 20 ######################################################################
 10 ######################################################################
  0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.
            0 5 0 5 0 5 0 5 0 5 0 5 0
                  CPU% per hour (last 72 hours)
                 * = maximum CPU% # = average CPU%

Thank you,
Somyot

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Received on Mon Nov 08 2010 - 04:48:29 ART