This release note describes the features and caveats for Cisco 700 software Release 4.2(2) and earlier. For complete documentation for Cisco 700 software, refer to the Cisco 700 Series Command Reference.
This document has the following sections:
Cisco 700 series router software Release 4.2(2) supports the following routers:
| Cisco 760 Series | Cisco 770 Series | CPA760 Series |
|---|---|---|
| Cisco 761 | Cisco 771 | CPA761 |
| Cisco 762 | Cisco 772 | CPA762 |
| Cisco 765 | Cisco 775 | CPA765 |
| Cisco 766 | Cisco 776 | CPA766 |
The following documentation is provided with your Cisco 700 series router:
This section provides information that was not included in the current documentation, and is not available elsewhere. The information will be included in the next revision of the documentation.
The Cisco 700 series router attempts to establish a connection with the remote host whenever interesting traffic is queued to be sent over a WAN connection. When bridging is off, the router attempts to connect to the remote device when IP traffic is queued. When bridging is on (default), the router attempts to connect when IP traffic and all nonrouted traffic is queued.
It is recommended that bridging be set to off in a WAN profile to reduce the amount of interesting traffic, and therefore, the number of attempts made to establish a connection. If the remote connection goes down, the router continuously attempts to bring up the line. In some environments (most commonly Windows NT using only Netbios), this causes the line to dial continuously. Depending on your configuration and how your connection is billed, turning bridging off in the WAN profile might reduce your costs.
For example, in the configuration titled "Routing IP On Demand," which begins on page 3-16 of the Cisco 700 Series Router Installation Guide (78-2412-05), you should enter the command set bridge off near Step 11. The exact sequence of this command in relation to the other commands is not critical, as long as it is done in the central902 profile.
The set clicallback command was left out of early online versions and the paper copy of the Cisco 700 Series Router Command Reference. The command was placed back in the online version and is available on the Web. It is also available on the August 1998 and later Documentation CDs.
The Cisco 700 series router software Release 4.2(2) provides the following enhancements:
The Always On/Dynamic ISDN (AO/DI) networking service provides an always-available connection to packet-based services through the WAN. For the user, AO/DI reduces costs by using the D channel to make low-speed data transfers. For service providers, AO/DI removes a significant amount of data traffic from the voice network.
The D channel is an always-available, packet-oriented link between the remote office and the central office. The customer premises equipment (CPE) can use the D channel to pass Multilink Point-to-Point and TCP/IP protocols encapsulated in X.25. The D-channel X.25 packets are handled at the central office by the X.25 packet handler, so these packets can be routed without crossing the circuit-switched switch fabric.
When D-channel bandwidth exceeds a defined threshold, the router places one or more ISDN B-channel calls to increase bandwidth. When bandwidth requirements fall below a defined threshold, the B channels are released.
A maximum of four switched virtual circuits (SVCs) can be used for AO/DI. If a D-channel connection is not available, the router uses the first available B channel for a call. After the D channel PPP link is established, it is not torn down. If Bandwidth Allocation Control Protocol (BACP) is configured, Bandwidth on Demand (BOD) is negotiated using BACP.
Performance of the multilink protocol declines when the bandwidth of the underlying links varies widely; therefore, the router idles the D channel when the B channels are in use. (Packets that can be redirected using the multilink procedure are described in RFC 1990.) After the number of links drops to one and that link is idle, the router returns to normal operation.
The following command has been added to enable AO/DI:
To turn AO/DI on, use the set aodi command.
SEt AOdi ON | OFf [NUA=nua]ON | AO/DI is configured. |
|---|---|
| OFf | AO/DI is not configured. |
| NUA | The X.121 address of the destination. This is a required parameter if AO/DI is on. |
| POwerupenable | The D channel X.25 SVC established at power up. The SVC is established only for active profiles. |
Off
System or profile mode
To disconnect from the D-channel link, use the disconnect command.
The set link auto on command (where link = D) brings the D channel up on demand. By default the D-channel link is set to OFF.
To configure AO/DI, Multilink PPP has to be configured first. Any available SVC can be used for the AO/DI call. The demand and timeout commands configure three links when AO/DI is configured.
If AO/DI is enabled when a call is made, the channel number for the first link of the call is 3. If AO/DI is disabled the channel number is 1 or 2.
When configuring the demand command parameters for the D channel, the syntax is as follows:
DEmand D [THreshold=kbs] [DUration=seconds] [SOurce=LAn | WAn | BOth]The default demand command parameters are as follows:
| Link | Auto | Threshold | Duration | Source |
|---|---|---|---|---|
| D | On | 0 kbps | 1 | LAN |
| 1 | On | 7.5 kbps1 | 1 | BOTH |
| 2 | On | 48 kbps | 1 | BOTH |
When configuring the timeout command parameters for the D channel, the syntax is as follows:
TImeout D [THreshold=kbs] [DUration=seconds] [SOurce=LAn | WAn | BOth]The timeout parameter for the D-channel link is set to off by default.
This feature is available only on the X.25 images.
The following example turns AO/DI on for the address of the remote device:
Host> set aodi on nua 14082221000
show config
show connection
show demand
show status
show timeout
Cisco access servers require a specific authentication protocol to communicate with each type of dial-in device. For example, analog modem dial-in devices are authenticated by using PAP, and ISDN routers are authenticated by using CHAP.
By default, the Cisco access server proposes PAP in its line-control protocol configuration request. The Cisco 700 series router rejects PAP and waits for the Cisco access server to propose CHAP. When CHAP is proposed, the router proceeds with the authentication phase.
Cisco 700 series router software Release 4.2(2) solves the problem of a PAP proposal rejection and includes the flexibility of a fall-back order. You can specify a preference for a particular protocol. However, if the access server requires a protocol other than the preferred protocol, the router accepts it.
The following command has been added to support PPP Authentication:
To specify a preferred authentication protocol, use the set ppp authentication accept command.
SEt PPp AUthentication ACcept [CHap | PAp] | [EIther]| ACcept | The Cisco 700 series router is the device being authenticated. |
| CHap | CHAP is the preferred authentication protocol. |
| PAp | PAP is the preferred authentication protocol. |
| EIther | Either CHAP or PAP can be used for authentication. |
Accept either
System or profile mode
This command cannot be used with the set ppp chaprefuse command because the parameter specifies that CHAP must be refused.
To set a preferred order of authentication for incoming calls, use the set ppp authentication accept command in system mode.
The following example accepts CHAP only:
Host> set ppp authentication accept chap
The following example accepts PAP only:
Host> set ppp authentication accept pap
The following example accepts either protocol, with a preference for CHAP:
Host> set ppp authentication accept chap either
The following example accepts either protocol, with a preference for PAP:
Host> set ppp authentication accept pap either
The following example accepts either protocol, with no preference:
Host> set ppp authentication accept either
show security
Before software Release 4.2(2), IP RIP packets were sent at a fixed interval of 30 seconds. With software Release 4.2(2), RIP version 1 and version 2 are configurable. The following commands have been added to set and display the IP RIP timer value.
To change the IP RIP time, use the set ip rip time command.
SEt IP RIP TIme seconds| seconds | Any value between 1 and 4294967 seconds. |
30 seconds
System mode
If two RIP timers are ON, updates are sent at alternate intervals with a period of half the interval between them. The remaining RIP timers (timeout, hold-down, and flush) are calculated relative to the RIP update timer.
The following example sets the interval to 120 seconds:
Host> set ip rip time 120
show ip rip time
To display the current IP RIP time value, use the show ip rip time command.
SHow IP RIP TImeSystem mode
The following example shows the RIP time in seconds:
Host> show ip rip time Rip Time Limit 120 secs.
set ip rip time
The previous Cisco 700 series router DHCP server implementation assigns an IP address to the DHCP client with an infinite lease time. With Cisco 700 series router software Release 4.2(2), you can specify the lease time for all the addresses.
The following commands have been added to support DHCP Address Lease Time:
To set the IP address lease time, use the set dhcp leasetime command.
SEt DHcp LEasetime minutes| minutes | A range from 60 to 71000 minutes (approximately 50 days) or 0 (infinite). |
0 minutes (a lease time of infinity)
System mode
Before software Release 4.2(2), all addresses were allocated infinite lease time. With software Release 4.2(2), the lease-time value can be set to 0 or from 60 to 71000 minutes. When the least time is set to 0, the lease time is infinite (the default value). (The system time must be set accurately for the lease time feature to function properly.)
When a DHCP client needs an IP address, it sends a DHCP request packet to the network. The request packet can include the duration (lease time) during which the client would use the IP address. The router, acting as a DHCP server, allocates IP addresses from its pool (depending on availability). The lease time allocated to the client in the response packet depends on the lease time set on the router.
For example, a router with a lease time set to infinite (default) responds to a DHCP client request as follows:
A router with a lease time set to a value of 100 minutes responds to a DHCP client request as follows:
The following example sets the lease time to 60 minutes:
Host> set dhcp leasetime 60
show dhcp config
To display the DHCP configuration, use the show dhcp config command.
SHow DHcp COnfigSystem mode
The following example shows the DHCP configuration with an infinite (0) lease time:
Host> show dhcp config Environment DHCP Server ON DHCP Relay OFF IP Address Pool Start IP Address 10.0.0.2 Count 128 Lease Time (minutes) Infinite Subnet Mask 255.0.0.0 DNS Configuration Primary DNS Server NONE Secondary DNS Server NONE Domain "" Gateways Primary Gateway 10.0.0.1 Secondary Gateway NONE WINS Configuration Primary WINS Server NONE Secondary WINS Server NONE NetBios ScopeId "" Address In Use IP Address Mac Address Lease Expiration 10.0.0.2 00a0c9931954 Infinite 10.0.0.3 00a0c993191f Infinite 2 IP addresses allocated, 126 free
The following example shows the DHCP configuration with 60-minute lease time:
Host> show dhcp config Environment DHCP Server ON DHCP Relay OFF IP Address Pool Start IP Address 10.0.0.2 Count 128 Lease Time (minutes) 60 Subnet Mask 255.0.0.0 DNS Configuration Primary DNS Server NONE Secondary DNS Server NONE Domain "" Gateways Primary Gateway 10.0.0.1 Secondary Gateway NONE WINS Configuration Primary WINS Server NONE Secondary WINS Server NONE NetBios ScopeId "" Address In Use IP Address Mac Address Lease Expiration 10.0.0.2 00a0c9931954 04/20/1998 15:27:01 10.0.0.3 00a0c993191f 04/20/1998 15:26:00 2 IP addresses allocated, 126 free
set dhcp leasetime
The X.121 address can be added to packets sent over the D channel. The following commands have been added to support X.121 addressing:
To change the X.121 address, use the set x25d x121host command.
SEt X25d X121host address| address | Data Terminal Equipment (DTE) X121 host address. |
None
System mode
This address is the calling DTE address for all X.25 D channel packets. The length of the X.121address must not be greater than 16 decimal digits. After setting the X.121address, the router must be rebooted for the change to take effect. The set defaults command sets the X.121address to an empty string.
The X.121 address is used only for X.25 D channel. The X.25 B channel packets do not contain the X.121 address because calling DTE address suppression is required for TPAD operations (on X.25 over the B channel).
The following example sets an X.121 address:
set x25d x121host 1234567890
set defaults
upload
The ability to turn the Terminal Endpoint Identifier (TEI) number on or off using the set x25 tei command has been added.
To set the Terminal Endpoint Identifier (TEI) number, use the set x25d tei command.
SEt X25d TEI [ON | OFf | nnn]| ON | TEI has a value of 255. |
| OFf | TEI has a value of 0. |
| nnn | TEI number or the support level. |
None
System mode
If set to OFF, there is no X.25 D channel support. If set to ON, the value is 255; the central office assigns the TEI number dynamically. If nnn is less than 255 and greater than 0, the value for nnn is assigned to TEI. This command is not effective until the router is rebooted.
The following example sets the TEI number to 2:
Host> set x25d tei 2
reset x25d policy
set x25d policy
show x25d policy
Before software Release 4.2(2), multicast IP support forwarded multicast packets after decrementing the TTL value. Multicast packets with a TTL value of 1 (for example, Internet Group Management Protocol) were dropped by the router. However, for user applications to function properly, these packets must be forwarded.
With software Release 4.2(2), multicast packets are forwarded without decrementing the TTL value. (Not decrementing the TTL is against the standards for multicast routing.) The downstream router receiving a multicast packet is signaled that the Cisco 700 series router is an edge multicast router. The downstream router must be a true multicast router and must not assume the Cisco 700 series router is an edge router. (There are no changes to the user interface.)
Before software Release 4.2(2), the router used the default netmask associated with the negotiated IP address. Although you could specify a netmask, it would be ignored, and the default netmask for the negotiated IP address would be used. With software Release 4.2(2) you can specify that the netmask configured in the user profile should be used instead of the default netmask for the negotiated IP address. (fixes CSCdj89217)
The following command has been added to support the netmask modification:
To configure the netmask in a profile as the netmask for the WAN connection, use the set ppp ip netmask local command.
SEt PPP IP NEtmask LOcal ON | OFf| ON | Uses the netmask configured in profile mode for the WAN connection using that profile. |
| OFf | Uses the default netmask. |
None
Profile mode
None.
The following example sets the netmask to the negotiated value:
Host> set ppp ip netmask local off
set ip address
set ip netmask
Cisco 700 series router software Release 4.2(2) is compliant with RFC 1974 and supports RFC 1990 for PPP, Stac LZS compression and Multilink PPP. For the RFC 1990 implementation, if there is a link without both Endpoint Discrimination and Authentication, a second link is allowed for outgoing calls, but for security reasons, not for incoming calls.
Detailed information about the software features is in the Cisco 700 Series Router Command Reference. See the "Cisco 700 Series Router Documentation" section in this document for more information.
This section provides the latest information about Cisco 700 series router software Release 4.2(2) limitations. Each item includes the Cisco DDTS tracking number, if applicable.
During the upload of a configuration over ISDN the line, the DEMAND 1 DURATION statement is missed. (CSCdj80519)
In the 1tr6 image, if you are connected on a voice call and flash, on occasion the message "Warning: Illegal dereference" displays. The router might reboot. No user action is required. (CSCdk03329)
AO/DI is available only on one connection. Even if it is enabled on multiple profiles, only one profile a time can use it. (no number available)
The Cisco 700 series router telnet server does not give up by timeout. The router calls to the telnet client every 2 minutes and will not stop. The condition is created as follows:
This section provides the latest information about Cisco 700 series router software Release 4.2(1) caveats. Each item includes the Cisco DDTS tracking number, if applicable.
RIP updates keep the ISDN link up if the idle timeout is greater than the RIP timer value even if the RIP option is LINKUP. However, it does not cause the link to come up by itself. To correct the problem, use a filter for RIP traffic with the IGNORE option in the WAN profile.
The system password is echoed over the ISDN connection the first time the connection is established. However, it is not echoed in subsequent connections.
The upload command does not include the set ip route destination 0.0.0 propagate off conv1 command in the configuration if a default route was entered in the user-defined profile before the connection was made. This occurs when the router connects to an Internet service provider, and obtains an IP address through IP control protocol (IPCP) negotiation. (no number available)
A router repeatedly receives voice calls when both B channels are occupied with data calls intermittently loses one of the B channels. To correct the problem, reboot the router. (CSCdj68840)
In previous versions, when a router configured as a DHCP server is power cycled, the IP address issued from the router is lost to the router table. A second PC trying to get an IP address from the router receives the IP address at the top of the list, duplicating the first PC IP address. This has been resolved in software Release 4.2(2). (CSCdj45244)
This section describes the applications supported by the Cisco 700 series router software Release 4.2(2).
The CiscoSecure Authentication Agent (available for Windows 95 and Windows NT 4.0) application simplifies the use of token authentication over ISDN. There are two authentication modes: single authentication and double authentication.
The Cisco 700 series router operates in single authentication mode when Token Authentication Support (TAS) is enabled. CiscoSecure Authentication Agent is available on the World Wide Web (WWW). See the "Cisco Connection Online" section in this document for more information.
Cisco 700 series router software Release 4.0(1) and higher supports Cisco 700 Fast Step. Cisco 700 Fast Step simplifies the setup, configuration, and monitoring of Cisco 700 series routers.
Cisco 700 Fast Step runs on Microsoft Windows 95 and Windows NT 4.0 systems. It is provided with your router on the Cisco Fast Step CD-ROM. The application is also available on Cisco Connection Online. See the "Cisco Connection Online" section in this document for more information.
Cisco 700 series router software Release 4.0(1) and higher supports ClickStart EZSetup. It provides a web-based interface that guides you through a basic router configuration. (Communication between the Cisco 700 series router and the configuration terminal is accomplished through the Ethernet by connecting both devices to an Internet Protocol (IP) network.) ClickStart EZSetup is available on Cisco Connection Online. See the "Cisco Connection Online" section in this document for more information.
This section describes the process for saving the current configuration and updating the router software image. The default image for Cisco 761, Cisco 765, Cisco 771, and Cisco 775 routers is NET3, IR. The default image for all other Cisco 700 series routers is US.
Images for software Release 4.0(1) and higher require 1.5 MB of dynamic RAM (DRAM). If you do not have enough DRAM to support the software, the router does not boot. Refer to the "National ISDN Capability Packages" section for instructions on checking the amount of DRAM. Instructions for increasing the amount of DRAM are in the Cisco 700 Series Router Installation Guide.
X.25 images require 1.5 MB of DRAM and 1 MB of Flash memory. If you do not have enough Flash memory to run X.25 images, the router must be replaced with a Cisco 700M series router. The label on the bottom of the router identifies an M-series router. You can display the amount of Flash memory by using the version command. Refer to the Cisco 700 Series Router Command Reference for information about this command.
The following example saves the configuration to a file by using Terminal for Windows, a common terminal emulation software program:
Step 1 When the terminal emulation program is running, enter the upload command at the command line prompt, but do not press Return after you enter the command:
Step 2 From the Transfer menu, select Receive Text File.
Step 3 In the Receive Text dialog box, specify a filename to save the configuration in, and select the directory where you want to save the file.
Step 4 Click OK.
Step 5 Return to the terminal emulation program, and press Return to execute the command. The configuration is saved to the file specified in Step 3.
Step 6 Click Stop when the configuration has finished uploading. You are ready to download the software.
Select the image (filename) for your router. Table 1, Table 2, and Table 3 list the filename and memory required for each image. Images named C760 are for use with both Cisco 760 and Cisco 770 series routers.
| UNIX Filename | DOS Name | Description | Flash Memory Required | DRAM Required |
|---|---|---|---|---|
| c760-in.b-US.42-2 | 80146204 | C760/C770 Series Internet Ready Feature Set, United States 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.b-NET3.42-2 | 80146304 | C760/C770 Series Internet Ready Feature Set, Europe 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.b-1TR6.42-2 | 80146404 | C760/C770 Series Internet Ready Feature Set, Germany 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.b-TPH.42-2 | 80145504 | C760/C770 Series Internet Ready Feature Set, Australia 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.b-INS.42-2 | 80146604 | C760/C770 Series Internet Ready Feature Set, Japan 4.2(2) | 0.5 MB | 1.5 MB |
| UNIX Filename | DOS Name | Description | Flash Memory Required | DRAM Required |
|---|---|---|---|---|
| c760-in.r-US.42-2 | 80147204 | C760/C770 Series Remote Office Feature Set, United States 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.r-NET3.42-2 | 80147304 | C760/C770 Series Remote Office Feature Set, Europe 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.r-1TR6.42-2 | 80147404 | C760/C770 Series Remote Office Feature Set, Germany 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.r-TPH.42-2 | 80147504 | C760/C770 Series Remote Office Feature Set, Australia 4.2(2) | 0.5 MB | 1.5 MB |
| c760-in.r-INS.42-2 | 80147604 | C760/C770 Series Remote Office Feature Set, Japan 4.2(2) | 0.5 MB | 1.5 MB |
| UNIX Filename | DOS Name | Description | Flash Memory Required | DRAM Required |
|---|---|---|---|---|
| c760-in.rxd-US.42-2 | 80147204 | C760/C770 Series X.25/B&D Feature Set, United States 4.2(2) | 1 MB | 1.5 MB |
| c760-in.rxd-NET3.42-2 | 80147304 | C760/C770 Series X.25/B&D Feature Set, Europe 4.2(2) | 1 MB | 1.5 MB |
| c760-in.rxd-1TR6.42-2 | 80147404 | C760/C770 Series X.25/B&D Feature Set, Germany 4.2(2) | 1 MB | 1.5 MB |
| c760-in.rxd-TPH.42-2 | 80147504 | C760/C770 Series X.25/B&D Feature Set, Australia 4.2(2) | 1 MB | 1.5 MB |
| c760-in.rxd-INS.42-2 | 80147604 | C760/C770 Series X.25/B&D Feature Set, Japan 4.2(2) | 1 MB | 1.5 MB |
If you are loading software from a floppy disk, read and follow the swl (software load) command instructions in the Cisco 700 Series Router Command Reference. If you are loading software from a CD, read and follow the swl (software load) command instructions in the CD booklet.
The following example loads the configuration by using Terminal for Windows, a common terminal-emulation software program:
Step 1 From the terminal-emulation program, select Text Transfer from the Setting menu. The Text Transfer dialog box appears.
Step 2 Set flow control to Line at a Time, and set Delay Between Lines from 0.5 to 1 second.
Step 3 Click OK.
Step 4 From the Transfer menu, select Send Text File.
Step 5 Select the file to be loaded, such as the one you saved in Step 2 in the "Saving a Configuration" section.
Step 6 Click OK. The parameters are transferred to your router.
Step 7 If errors occur during the transfer, enter the set default command, increase the delay between lines, and repeat the procedure for loading the configuration, beginning with Step 1.
A capability package is a set of standardized BRI line features that simplifies the process of configuring an ISDN line. The capability package ordering codes described in this section apply to NI-1 ISDN lines.
Package S provides alternate voice and circuit-switched data with no additional features. When a minimum feature set is needed, Package S is the preferred NI-1 capability package for Cisco 765, Cisco 766, Cisco 775, and Cisco 776 routers.
Package EZ-1 (also referred to as Capability Package U) provides alternate voice and circuit-switched data with all the features and capabilities of the router enabled. Package EZ-1 is the preferred NI-1 capability package for the Cisco 765, Cisco 766, Cisco 775, and Cisco 776 routers. The features include flexible calling (conference calling, call transfer, hold and retrieve), ACO (call waiting), and Call Forward Busy (CFB).
If you have any problems with your ISDN NI-1 provisioning, contact Cisco ISDN Support Services (United States only). To access this service or to obtain more information, call (800) 553-NETS (6387) and select the Customer Service option, or visit the Cisco ISDN web site at www.cisco.com/isdn.
When provisioning multiple directory numbers for a 5ESS-NI1, additional provisioning information that activates the distinctive ringing feature is available from Cisco ISDN Support Services; however, the flexible calling features (three-way conference calling call transfer, hold and retrieve) are not available.
ISDN Support Services are only available in the United States. To access this service or to obtain more information, call 800 553-NETS (6387) and select the Customer Service option, or visit the Cisco ISDN Web site at www.cisco.com/isdn.
Cisco Connection Online (CCO) is the Cisco primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a maintenance contract, contact Cisco's Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.
Please use CCO to obtain general information about Cisco Systems, Cisco products, or upgrades. If CCO is not accessible, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.