Cisco ME 2600X Series Ethernet Access Switches

Release Notes for Cisco ME 2600X Series Ethernet Access Switch, Cisco IOS Release 15.4(3)S and Later

  • Viewing Options

  • PDF (1.2 MB)
  • Feedback
Release Notes for Cisco ME 2600X Series Ethernet Access Switch, Cisco IOS Release 15.4(3)S and Later


Release Notes for Cisco ME 2600X Series Ethernet Access Switch, Cisco IOS Release 15.4(3)S and Later

These release notes include important information about the Cisco IOS Release 15.4(3)S and later releases that runs on the Cisco ME 2600X series ethernet access switches. Use this document in conjunction with the previous Release Notes for Cisco ME 2600X Series Ethernet Access Switch, Cisco IOS Release 15.4(2)S.

These release notes also include the limitations, restrictions, and caveats that apply to these releases.

You can verify that these release notes apply to your switch as follows:
  • If you are installing a new switch, see the Cisco IOS release label on the rear panel of your switch.

  • If your switch is on, use the show version privileged EXEC command. See the Determining the Software Version section.

For the complete list of Cisco ME 2600X switch documentation, see the Related Documentation section.

You can download the switch software from this site (registered users with a login password):


New and Changed Information

The following sections list new features:

New Hardware Features in Release 15.4(3)S

There are no new hardware features in this release.

New Software Features in Release 15.4(3)S

These are new software features in this release.

CFM over EVC

Ethernet Connectivity Fault Management (CFM) is an end-to-end per-service Ethernet layer operations, administration, and maintenance (OAM) protocol. It includes proactive connectivity monitoring, fault verification, and fault isolation for large Ethernet metropolitan-area networks (MANs) and WANs.

For more information about CFM over EVC, see the Cisco ME 2600X Series Ethernet Access Switch Software Configuration Guide.

Y.1731 Multicast Loopback Ping

This feature provides support for Y.1731 multicast loopback ping extension.

For more information about Y.1731 multicast loopback ping, see the CFM over EVC chapter in Cisco ME 2600X Series Ethernet Access Switch Software Configuration Guide.

New Limitations in Release 15.4(3)S

Assigning IP address to physical interfaces is no longer supported. To assign IP address, you must use Bridge Domain Interfaces (BDIs).

Changed Information in Release 15.4(3)S

Change in object identifiers (OIDs):
  • system OID—from to

  • fan module vendor-type OID—from to

Determining the Software Version

To determine the version of Cisco IOS software that is running on your Cisco router, log in to the router and enter the show version EXEC command:

Router# show version
Cisco IOS Software, ME2600X Software (ME-UNIVERSALK9-M), Version 15.2(2)SA, RELEASE SOFTWARE (fc5)
Technical Support:
Copyright (c) 1986-2013 by Cisco Systems, Inc.

Upgrading to a New Software Release

For information about choosing a new Cisco IOS software release, see How to Choose a Cisco IOS Software Release at this URL:


For information about upgrading the Cisco ME 2600X series ethernet access switches, see the document at this URL:


Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http:/​/​​go/​cfn. An account on is not required.

To choose a new Cisco IOS software release based on information about defects that affect that software, use the Bug Search Tool at this URL:


Downloading The Software Image File

To download the software image file for your device, complete these steps:

Step 1   If you are a registered customer, go to this URL and log in.


Step 2   Navigate to Switches > Service Provider Switches - Ethernet Access.
Step 3   Navigate to your switch model.
Step 4   Click IOS Software, and select me2600x-universalk9-mz.152-2.SA.fc5.
Step 5   To download the selected software image, click Download.

Limitations and Restrictions

For limitations and restrictions applicable to a particular feature supported on Cisco ME 2600X, see the Cisco ME 2600X Series Ethernet Access Switch Software Configuration Guide at http:/​/​​en/​US/​products/​ps12951/​tsd_​products_​support_​series_​home.html

Using the Bug Search Tool

This chapter describes how you can use the bug search tool to search for bugs in a Cisco IOS release.

Bug Severity Levels

The system grades known problems (bugs) according to severity level. These release notes contain descriptions of the following bug levels:
  • All severity level 1 or 2 bugs
  • Significant severity level 3 bugs
  • All customer-found bugs

Access Bug Search

You can search for problems by using the Cisco Bug Search tool.

To access Bug Search, you need the following items:

  • Internet connection
  • Web browser
  • user ID and password

Using Bug Search Tool

This section explains how to use the Bug ToolKit to search for a specific bug.

Step 1   Go to https:/​/​​bugsearch/​
Step 2   You are prompted to log into Log in with your user ID and password. After successful login, the Bug Search Tool page opens.
Step 3   To search for a specific bug, enter the bug ID in the Search for field and press Enter.
Tip    Click Help on the Bug Search page for information about how to search for bugs, create saved searches, and create bug groups

Caveat List for Cisco IOS Release 15.4(3)S and Later

This chapter describes the open severity 1 and 2 caveats, and select severity 3 caveats:

The "Open Caveats" sections list open caveats that apply to the current release and may apply to previous releases. A caveat that is open for an earlier release and is still unresolved, applies to all future releases until it is resolved.

The bug IDs are sorted alphanumerically.


The Caveats section includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a specific caveat you must use the Bug Search Tool. For more details, see Using the Bug Search Tool.

Open Caveats—Cisco IOS Release 15.4(3)S2




PPPoe statistics are not getting displayed for EFP level.


ME2600X : [E_LR]rm_lr_reserve_entries_from_pool


Input queue drops counters on 10GE ports need to updated correctly


Bridge domain loop on ME2600


Ping request time out when port-channel is between ME2600 and other box

Resolved Caveats—Cisco IOS Release 15.4(3)S2




Ping failure on enabling ip arp inspection bridge-domain bd_id on int


DHCP snooping write delay configure-able timer not working correctly

Open Caveats—Cisco IOS Release 15.4(3)S

Bug ID Description


Counters are not updated for EVC ACL.


When using 10M speed, after reload, out of 8 members LACP one member goes to passive state.


Traceback message is seen when Point to Point Protocol over Ethernet Intermediate Agent (PPPoE IA) is configured on maximum number of Bridge Domains (BDs).


Unable to configure Management interface IP as an access node-id.


show ip igmp snooping mrouter command displays VLAN.


PPPoE statistics are not displayed for EFP level.


After MVR leave, traffic flow is still observed.


MAC learning initially fails and then works after MAC table is cleared.


Telnet, SSH and ping do not work on access ports.

Resolved Caveats—Cisco IOS Release 15.4(3)S

Bug ID Description


When static IPSG is removed from the interface, the IPSG table maintains stale entry.


Cisco ME2600X does not support 400 neighbors over OSPF.


Memory leak observed while configuring/unconfiguring 128 IGMP snoop BD.


PPPoE IA packets are dropped when PPPoE IA is disabled globally.


Pop1, Pop2, and 2 to 1 re-write are not working when ingress encapsulation is dot1ad.


When PPPoE-IA is enabled, switch forwards PADR/PADT packets to an untrusted port.


show platform environment command needs to display information about PSU.


Can not learn remote port MEP.


Loopback ping fails when LAG is configured between three nodes.


Configuring MIP does not allow remote MEP to learn.


Configuration is lost when upgrading from SA image to MCP dev.


Remove peekpoke command.


Traffic loss is observed when incremental MAC learning is enabled.


Traceroute fails to get reply from MIPS.


Password recovery is not working in Cisco ME2600X.


Crash is observed on configuring port MEP on a 10 GB interface.

Related Documentation

User documentation in HTML format includes the latest documentation updates and might be more current than the complete book PDF available on

These documents provide information about the switch and are available from this site:


  • Regulatory Compliance and Safety Information for the Cisco ME 2600X Series Ethernet Access Switch

  • Cisco ME 2600X Series Ethernet Access Switch Hardware Installation Guide

  • Cisco ME 2600X Series Ethernet Access Switch Software Configuration Guide

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:


Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.


Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: http:/​/​​go/​trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)