Table of Contents
Cisco Broadband Operating System 2.4 Release Notes
December 21, 2000
These release notes describe resolved and open issues for the Cisco Broadband Operating System (CBOS) Release 2.4. Please refer to previous release notes for specific information concerning past releases.
For more detailed information about the information in these release notes, refer to the "Related Documentation" section. Information about electronic documentation can be found in the "Cisco.com" section.
These release notes provide the following information:
CBOS is the common operating system for Cisco customer premises equipment (CPE). The CBOS is modeled after Cisco IOS software and features a similar command syntax and format. This operating system is bundled with the CPE products listed below and can also be downloaded from Cisco Connection Online.
The CBOS Release 2.4 supports the following Cisco CPE products:
- Cisco 627
- Cisco 633
- Cisco 673
- Cisco 675
- Cisco 675e
- Cisco 677
- Cisco 677i
- Cisco 678
For information on upgrading your software from a previous version, see theCisco Broadband Operating System 2.3.0 Release Notes.
Additions to the Cisco Broadband Operating System 2.4 User Guide
The following items are additions or corrections to the Cisco Broadband Operating System 2.4 User Guide.
There is an additional command named set clock. Valid values are from 64 to 2048. The default is 2048. This command is configurable in enable mode.
Follow these steps to autoconfigure IP Precedence bits using auto-configuration tool, the Cisco Data Connection Manager (CDCM).
Follow these steps from the Entity Level. This is the preferred method.
Step 1 Right-click the cdcmCPE-? object.
Step 2 From the drop-down menu, select Configure.
Step 3 Select IP Static Route.
Step 4 In the Routing Policy field, enter the precedence bit value as follows.
-
precedence bit
| Corresponding value in Routing Policy field
|
0
| 0
|
1
| 32
|
2
| 64
|
3
| 96
|
4
| 128
|
5
| 160
|
6
| 192
|
7
| 224
|
Step 5 In the object cdcpIpStaticRoutePolicy (Routing Policy), the precedence value and the policy code are contained in the least significant byte as follows:
- Precedence: highest 3 bits
- Policy code: the rest of 5 bits. (not used by CBOS)
- Raw: in the Interface field, enter the PropVirtual Interface Index number of the interface whose precedence bit will be effective.
The Service Profile method is the alternative. Follow these steps:
Step 1 Right-click cdcmProxyElement...
Step 2 From the drop-down menu, select Profile.
Step 3 Select Service.
Step 4 Select the IP Static Route tab.
Step 5 Enter the same value for Routing Policy.
Step 6 Enter the next hop address.
This section lists resolved issues for CBOS 2.4.
- Symptom:
- A Cisco 677 CPE device will not train up when using g.lite or g.dmt.
- Condition:
- When using g.lite or G.dmt on a 627 or 677, a Cisco 677 CPE device will not train up to a Cisco 6260 configured the same way.
- Workaround:
- Upgrade the ADI firmware to version 3.0. The name of the code required is RTBLD.BNM, available in a special file access area of CCO. You must be a registered CCO user. To download the RTBLD.BNM code, follow these steps:
Step 1 From any browser, log in to www.cisco.com.
Step 2 In Service and Support, select Software Center.
Step 3 Select Special File Access.
Step 4 Enter:
- cbos23.
Step 5 Click RTBLD.BNM.
This section lists open issues for CBOS 2.4.
- Symptom:
- When attempting to use two or more PCs behind a CPE to do a file transfer with Microsoft networking to a Windows 2000 server, only one PC will be able to copy a file at a time.
- Condition:
- This occurs only under the following conditions:
- Microsoft networking is the file transfer mechanism
- more than one PC is attempting to do a file transfer at the same time
- the CPE is running NAT
- the file transfer is attempted from a Windows 2000 server on the far end of the connection.
- Workaround:
- Allow one PC at a time to do a file transfer using Microsoft networking, or use another file transfer method, such as FTP.
- Symptom:
- When the CPE is set up as a DHCP client and is receiving its IP address from a DHCP server behind the terminating router (NRP on a 6400 or a 7200), the CPE may not receive an IP address from the DHCP server.
- Condition:
- This occurs with RFC1483 routing configured on a CPE which is configured to be a DHCP client and is trying to get DHCP information from a DHCP server over the wan interface. This problem does not apply to PPP routing, as there is no reason to use DHCP client functionality on the CPE in this situation; instead, IPCP should be used to obtain the IP address. It also does not apply if the DHCP server service is running on the 6400/7200; in this case, the CPE can receive an IP address from the DHCP server on the terminating router.
- The problem that occurs is that the far-end DHCP server returns the IP address forwarded as a broadcast. The terminating router (6400/7200) receives this broadcast on its ethernet address, then, as it should, does not forward it over the ATM interfaces.
- Workarounds:
- There are two possible workarounds:
- Put an IP helper address on the Ethernet interface of the 6400/7200 that points to the original IP address of the CPE.
- Do not to attempt to have the CPE receive an IP address from a DHCP server over the WAN interface. The CPE, which is functioning as a router, should have a static IP address. If necessary, this address can be excluded from the DHCP server.
- Symptom:
- When using auto-provisioning to configure DHCP pools for a CPE, if the first pool is not configured, it will still be enabled and given default values of IP 10.0.0.2, netmask 255.255.255.0, and size 252. This will cause this pool to be used first.
- Condition:
- This occurs when auto-provisioning is used to pass DHCP pool information to a CPE and the first pool on the CPE is not configured.
- Workaround:
- Always configure the first pool on the CPE when using auto-provisioning.
- Symptom:
- When you attempt to set the DHCP relay command to an interface, only the wan0-0 interface is accepted as valid.
- Condition:
- This condition occurs when you attempt to use the eth0 interface for the DHCP relay command; for example, when SDSL modems are being used in a back-to-back environment.
- Workaround:
- No action is necessary. When the CPE is in the back-to-back configuration or the CPE mode is set to CO, the DHCP relay requests automatically go out the eth0 interface, even though the sho dhcp relay command shows the relay interface as wan0-0.
- Symptom:
- Routing table updates are not received when RIPv2 is used.
- Condition:
- When the CPE device is configured with RIPv2 on a network with other RIPv2 routers, it does not receive routing table updates.
- Workaround:
- In addition to RIPv2 configuration, you must enable multicast forwarding on the CPE device. The CPE device cannot recognize multicast addresses if multicast forwarding is not enabled.
- Symptom:
- When using multiple VCCs and VIP interfaces with PPP and NAT enabled, the VIP interfaces default to NAT outside interfaces.
- Condition:
- To use NAT across the VIP interfaces you have to change them to NAT inside interfaces.
- Workaround:
- Enter the following command:
- set interface vip0 inside
- or
- Do not use NAT when using the VIP interfaces. If you must use NAT, direct all traffic to the wan0-0 interface. The wan0-0 interface remains as a NAT outside interface.
- Symptom:
- The show NVRAM command sporadically produces unintelligible results.
- Condition:
- This occurs occasionally when the command is abbreviated to sh nv.
- Workaround:
- Issue the complete command show nvram.
- Symptom:
- The mask for ethernet 0 (eth0) can be set to all 255s.
- Condition:
- When the mask of eth0 is set to 255.255.255.255, the interface will not appear in the routing table and is unusable.
- Workaround:
- Manually set the mask of eth0 to a number other than all 255s.
- Symptom:
- When stats web command is entered on a CPE, the value of the field # of current connections may be artificially high, up to a value of over 4 billion.
- Condition:
- This problem can occur when a web connection is established to the CPE and left up for a prolonged period of time, such as overnight.
- Workaround:
- There is no workaround.
- Symptom:
- When using multiple PVCs, for example, wan0-1 through wan0-7, and using the stats ip wan0-x command, only wan0-0 will display anything other than 0s for the statistics
- Condition:
- This occurs when using multiple PVCs and the stats ip command.
- Workaround:
- Obtain statistics on the amount of traffic by using other commands such as show ppp, show rfc1483, or show int wan0-x.
- Symptom:
- When NAT is enabled on a CPE and a global outside IP address has been assigned via the command line interface (CLI) or auto-provisioning, but an IP address is also being received via IPCP, the global outside IP address will be that received via IPCP.
- Condition:
- This occurs under the following circumstances:
- PPP routing is used on the CPE
- NAT is enabled on the CPE
- A global outside IP address is configured on the CPE from either the CLI or via auto-provisioning for the wan0-0 interface; the wan0-1 through wan0-7 interfaces do not have this issue
- The terminating route (6400 NRP or 7200) has been configured to pass an IP address via IPCP to the CPE
- Workaround:
- There are two possible workarounds:
- Configure the global outside IP address on the CPE or have the terminating router pass an IP address via IPCP. This avoids any potential conflicts between the global outside IP address on the wan0-0 interface and the IP address to be received via IPCP.
- Use the command line interface to set the following parameter:
- set ppp wan0-x ipcp IP address
- where x is the applicable interface and IP address is the desired global outside IP address.
- Symptom:
- When you try to set a password, any uppercase characters are converted to lowercase. Additionally, note that passwords set in a previous version of CBOS do retain their case after the CPE software is upgraded to Release 2.4.1.
- Condition:
- This occurs when using uppercase characters for both the exec or enable passwords.
- Workaround:
- The workaround is to use only lowercase characters.
Use these release notes in conjunction with these documents:
- Cisco Broadband Operating System Release 2.4 User Guide.
- Cisco 600 Series Installation and Operation Guide
- Cisco CPE Commander User Guide
- Cisco Data Connection Manager (CDCM) User Guide
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This document is to be used in conjunction with the Cisco Broadband Operating System 2.4 User Guide publication.
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