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IOS C4507R (12.2.25-EWA11) serious software issue


i found message in IOS software download

that IOS cat4000-i9k91s-mz.122-25.EWA11 found serious issue?

What IOS recommendation to replacement that IOS ?

Currently i'm using cat4000-i9k91s-mz.122-25.EWA11 in C4507R.




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Re: IOS C4507R (12.2.25-EWA11) serious software issue

Hello Lian,

the message is a disclaimer:

Cisco advices you the image is affected by a problem.

The problem is related to L2TP.

Other problems apply to OSPF or other L3 features.

If you are using the device as a L2 switch only actually none of these issues is of interest for you.

One is about SSH, again if you don't use SSH this is not a problem.

A suggestion for a later release can be done but a sh module would be needed to see what supervisor is installed.

However, the advice says that release 12.2(25)EWA12 is not affected

So I would try to download 12.2(25)EWA12.

Hope to help



Re: IOS C4507R (12.2.25-EWA11) serious software issue

You might want to move to the SG train as the EWA train is eol in November of this year.

Community Member

Re: IOS C4507R (12.2.25-EWA11) serious software issue

Hi Giuseppe,

thanks for the help i'm waiting for the EWA12.

Hi Glent,

what type of IOS SG train recommendation ?



here is my sh module C4507R:

C4507R#sh module

Chassis Type : WS-C4507R

Power consumed by backplane : 40 Watts

Mod Ports Card Type Model Serial No.


1 2 Supervisor II+ 1000BaseX (GBIC) WS-X4013+ JAE11485C73

2 2 Supervisor II+ 1000BaseX (GBIC) WS-X4013+ JAE11485KE3

3 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE114749UR

4 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE11474D7L

5 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE11474GQS

6 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE1235T5IK

7 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE1237UUM6

M MAC addresses Hw Fw Sw Status


1 001e.4aea.0d00 to 001e.4aea.0d01 4.5 12.2(31r)SGA 12.2(25)EWA11, Ok

2 001e.4aea.0d02 to 001e.4aea.0d03 4.5 12.2(31r)SGA 12.2(25)EWA11 Ok

3 001e.7a2f.4d60 to 001e.7a2f.4d8f 2.4 Ok

4 001e.13cf.b160 to 001e.13cf.b18f 2.4 Ok

5 001e.4af4.5010 to 001e.4af4.503f 2.4 Ok

6 0023.0460.6200 to 0023.0460.622f 2.5 Ok

7 0023.33a1.55e0 to 0023.33a1.560f 2.5 Ok

Mod Redundancy role Redundancy mode Redundancy status


1 Standby Supervisor SSO Standby hot

2 Active Supervisor SSO Active

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