Cisco Cisco IOS Software Release 15.0(1)M

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most 
serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only 
select severity 3 caveats are included in this section.

In this section, the following information is provided for each caveat:

Symptoms—A description of what is observed when the caveat occurs. 

Conditions—The conditions under which the caveat has been known to occur. 

Workaround—Solutions, if available, to counteract the caveat. 

If you have an account on Cisco.com, you can also use Bug Toolkit to find select caveats of any severity. 
To reach Bug Toolkit, log in to 

 and click Support: Tools & Resources: Bug Toolkit. Another 

option is to go to 

. (The defect that 

you have requested may not be displayed for one or more of the following reasons: the defect number 
does not exist, the defect does not have a customer-visible description yet, or the defect has been marked 
Cisco Confidential.)

This section consists of the following subsections:

Cisco IOS Release 15.0(1)M10 is a rebuild release for Cisco IOS Release 15.0(1)M. The caveats in this 
section are resolved in Cisco IOS Release 15.0(1)M10 but may be open in previous Cisco IOS releases.

CSCeb27716

Symptoms: Spurious memory access at vp_fastsend() may be seen in a Cisco 5800 access server 
under stress. This may not be service affecting.

Conditions: This is seen during a stress test of 12 hours with bi-directional traffic setup.

Workaround: There is no workaround.