|
|
|
NPM Type |
Product Numbers |
|---|---|
|
1-port 100BaseTX Fast Ethernet |
NP-1FE |
|
2-port 10BaseT Ethernet |
NP-2E-FDX |
|
6-port 10BaseT Ethernet |
NP-6E |
|
1-port Token Ring |
NP-1RV2 |
|
2-port Token Ring |
NP-2R |
|
1-port single attachment multimode FDDI |
NP-1F-S-M |
|
1-port dual attachment multimode FDDI |
NP-1F-D-MM |
|
1-port dual attachment single-mode FDDI |
NP-1F-D-SS |
|
2-port serial |
NP-2T1 |
|
4-port serial |
NP-4T |
|
2-port high-speed synchronous and 16-port low-speed sync/async |
NP-2T16S-V.35 |
|
NP-2T16S-RS232 | |
|
NP-2T16S-X21 | |
|
NP-2T16S-232V35 | |
|
NP-2T16S-232X21 | |
|
1-port HSSI |
NP-1HSSI |
|
4-port ISDN BRI |
NP-4B |
|
8-port ISDN BRI |
NP-8B |
|
1-port channelized T1/ISDN PRI |
NP-CT1 |
|
1-port channelized E1/ISDN PRI, unbalanced |
NP-CE1U |
|
1-port channelized E1/ISDN PRI, balanced |
NP-CE1B |
|
4-port serial E1/G.703 and E1/G.704, unbalanced |
NP-4GU |
|
4-port serial E1/G.703 and E1/G.704, balanced |
NP-4GB |
|
1-port single-mode ATM OC-3c |
NP-1A-SM |
|
1-port single-mode ATM OC-3c Long Reach |
NP-1A-SM-LR |
|
1-port multimode ATM OC-3c |
NP-1A-MM |
|
1-port ATM DS-3 |
NP-1A-DS3 |
|
1-port ATM E3 |
NP-1A-E3 |
A maximum of two high-speed interfaces is supported on the Cisco 4500-M and Cisco 4700-M routers. This includes Fast Ethernet, FDDI, and ATM OC-3 or DS-3. The only exception to this rule is that you cannot configure more than one ATM OC-3 on a single router.
The NP-2T does not support half-duplex, but the NP-4T does.
|
NPM Type |
Cisco 4500-M, and Cisco 4700-M |
Minimum Cisco IOS Software Release Required |
Hardware Restrictions with Other NPMs |
Product Numbers |
|---|---|---|---|---|
|
1-port 100BaseTX Fast Ethernet |
2 |
11.1(5)1 |
If one NP-1FE is installed, only one ATM or one FDDI module can be installed in the same router. If two NP-1FEs are installed, you cannot install any ATM or FDDI modules in the same router. Full-duplex mode is supported only when the Fast Ethernet module is the sole high-speed module configured. |
NP-1FE |
|
2-port 10BaseT Ethernet |
3 |
11.2(14) |
No restrictions |
NP-2E-FDX |
|
6-port 10BaseT Ethernet |
3 |
10.3(6) |
No restrictions |
NP-6E |
|
1-port Token Ring |
3 |
9.14(5) |
No restrictions |
NP-1RV2 |
|
2-port Token Ring |
3 |
9.14(5) |
No restrictions |
NP-2R |
|
1-port single attachment multimode FDDI |
2 |
9.14(1) |
Maximum of two high-speed modules can be installed per router. |
NP-1F-S-M |
|
1-port dual attachment multimode FDDI |
2 |
9.14(1) |
Maximum of two high-speed modules can be installed per router. |
NP-1F-D-MM |
|
1-port dual attachment single-mode FDDI |
2 |
9.14(3) |
Maximum of two high-speed modules can be installed per router. |
NP-1F-D-SS |
|
2-port serial |
3 |
9.14(6) |
No restrictions |
NP-2T2 |
|
4-port serial |
3 |
10.1 |
4 Mbps max. speed per interface. |
NP-4T |
|
2-port high-speed synchronous and 16-port low-speed sync/async |
2 |
11.2(4)P |
Maximum of two 2-port high-speed synchronous and 16-port low-speed synchronous modules can be installed per router. No restrictions with other modules. |
NP-2T16S-V.35 NP-2T16S-RS232 NP-2T16S-X21 NP-2T16S-232V35 NP-2T16S-232X21 |
|
1-port HSSI |
2 |
11.2(5)P |
Maximum of two HSSI modules when both are run at high speeds. Maximum of 12 Mbps per HSSI when two HSSI modules are configured and another high-speed module is also installed. |
NP-1HSSI |
|
4-port ISDN BRI |
2 |
10.2 |
Compatible with IOS Software 11.2 (4)T and later; otherwise, not compatible. Not compatible with the three PRI modules unless the PRI modules are configured for channelized service. |
NP-4B |
|
8-port ISDN BRI |
2 |
10.2 |
Compatible with IOS Software 11.2 (4)T and later. Not compatible with the three PRI modules unless the PRI modules are configured for channelized service. |
NP-8B |
|
1-port channelized T1/ISDN PRI |
2 |
10.3(4) |
Compatible with IOS Software 11.2 (4)T and later. When configured for PRI, the NP-CE1B is not compatible with the 4- and 8-port ISDN BRI modules. Is compatible with these modules when configured for channelized service. Is compatible with these modules when configured for channelized service. |
NP-CT1 |
|
1-port channelized E1/ISDN PRI, unbalanced |
2 |
10.3(4) |
Compatible with IOS Software 11.2 (4)T and later. When configured for PRI, the NP-CE1B is not compatible with the 4- and 8-port ISDN BRI modules. Is compatible with these modules when configured for channelized service. Is compatible with these modules when configured for channelized service. |
NP-CE1U |
|
1-port channelized E1/ISDN PRI, balanced |
2 |
10.3(4) |
Compatible with IOS Software 11.2 (4)T and later. When configured for PRI, the NP-CE1B is not compatible with the 4- and 8-port ISDN BRI modules. Is compatible with these modules when configured for channelized service. Is compatible with these modules when configured for channelized service. |
NP-CE1B |
|
4-port serial E1/G.703 and E1/G.704, unbalanced |
3 |
10.2(4) |
No restrictions |
NP-4GU |
|
4-port serial E1/G.703 and E1/G.704, balanced |
3 |
10.2(4) |
No restrictions |
NP-4GB |
|
1-port single-mode ATM OC-3c |
1 |
10.3(4) |
Maximum of two high-speed modules can be installed per router. |
NP-1A-SM |
|
1-port single-mode ATM OC-3c Long Reach |
1 |
11.2(9)P |
Maximum of two high-speed modules can be installed per router. |
NP-1A-SM-LR |
|
1-port multimode ATM OC-3c |
1 |
10.3(4) |
Maximum of two high-speed modules can be installed per router. |
NP-1A-MM |
|
1-port ATM DS-3 |
2 |
11.0(5) |
Maximum of two high-speed modules can be installed per router. |
NP-1A-DS3 |
|
1-port ATM E3 |
1 |
11.0(5) |
Maximum of two high-speed modules can be installed per router. |
NP-1A-E3 |
1. A maximum of two high-speed interfaces is supported on the Cisco 4500-M and Cisco 4700-M routers. This includes Fast Ethernet, FDDI, and ATM OC-3 or DS-3. The only exception to this rule is that you cannot configure more than one ATM OC-3 on a single router.
2. The NP-2T does not support half-duplex, but the NP-4T does.
All Cisco 4000 series routers share the same physical design. Each router offers three slots for LAN or WAN connectivity and uses the same optional NPMs and software features for compatibility and investment protection. Three different types of memory are available for the Cisco 4000 series — main memory, shared memory, and system Flash memory. Each type of memory serves a different purpose in routing packets from one interface to another. The benefit of this architecture is that the system can read program instructions or routing table data from main memory at the same time as it is moving packets between interfaces (using shared memory), thus increasing overall system performance and lowering network latency.
Factors That Affect Memory Requirements
You can change memory configurations in the Cisco 4000 series to accommodate internetworking demands. The memory requirements are driven by the following three factors:
Main DRAM memory — can be upgraded to allow for network expansion, the use of additional protocols or Cisco IOS services, or newer Cisco IOS software releases.
Shared DRAM memory — can be upgraded to improve I/O performance or to use higher densities or more physical or virtual interfaces.
Flash memory — can be upgraded to hold several Cisco IOS software images for easy management.
Main DRAM Memory
The Cisco 4000 series runs from an image stored in main DRAM. This memory is also used by the system for tables and stacks. The amount of main memory required is determined by the size of the image and by the configuration of the internetwork. Cisco regularly publishes product bulletins that detail what memory is required for any particular Cisco IOS feature subset, and also releases documentation that specifies what memory is needed.
Shared DRAM Memory
The Cisco 4000 series routers use shared DRAM (also known as packet memory) for handling user data. The recommended amount of shared memory is determined by the type and number of physical or virtual interfaces supported by the router. Other factors that impact the amount of required shared memory are the type of routing selected and the degree of throughput to the various interfaces.
The standard configuration for shared DRAM is 4 MB for the Cisco 4000 series. This is sufficient for most configurations with fewer than 24 physical or virtual interfaces. For routers with 24 or more interfaces or B channels (for example, NP-9B, CT1, and CE1), upgrading to a minimum of 8 MB of shared memory is required.
The table below lists the minimum shared memory requirements for NPMs used in the Cisco 4500-M and Cisco 4700-M series routers.
|
Network Processor Module Cisco 4500-M and Cisco 4700-M Routers |
Minimum Shared Memory |
|---|---|
|
NP-2E, NP-2T |
0.4 MB |
|
NP-2R, NP-4T, NP-GU, NP-4GB |
0.6 MB |
|
NP-6E |
1.2 MB |
|
NP-4B |
4.0 MB |
|
NP-8B |
8.0 MB |
|
NP-CT1, NT-CE1U, NT-CE1B (PRI) |
8.0 MB |
|
NP-CT1, NT-CE1U, NT-CE1B (Channelized mode) |
0.5 MB |
|
NP-1F-S-M, NP-1F-D-MM, NP-1F-D-SS, NP-1A-SM, NP-1A-SM-LR, NP-1A-MM, NP-1A-DS3, NP-1A-E3 |
2.0 MB |
|
2 NP-1F-S-M, NP-1F-D-MM, NP-1F-D-SS |
3.0 MB |
|
NP-1FE |
1.5 MB |
|
NP-1HSSI |
1.0 MB |
|
NP-2T16S |
0.6 MB |
The Cisco 4000 series software images are stored and compressed in system Flash memory. Flash memory is more reliable than traditional diskette-resident system software and provides maximum availability and easy software upgrades and maintenance. The Cisco 4000 series routers are shipped with a default of 4 MB of system Flash memory. This is adequate for most Cisco IOS software feature sets and leaves room for future image growth. However, certain feature sets require 8 MB of system Flash memory. With Cisco IOS Release 11.2, for example, the 4500-M requires 8 MB of system Flash memory for the Enterprise feature Set.
Most of the Cisco 4000 series support 4, 8, and 16 MB of system Flash memory. You might need to order more system Flash memory than the minimum required to store multiple images for the Cisco 4000 series router itself, and to store images for other routers so that the Cisco 4000 series can be used as a TFTP server for other Cisco routers.
The following types of memory are also used in the Cisco 4000 series, but they are not critical components that drive the minimum memory requirements for the system.
System Boot Flash
The Cisco 4500-M and Cisco 4700-M store their boot images in the system Flash memory. The standard configuration of 4 MB is sufficient for use on these platforms. Currently no upgrades are offered.
Boot Helper Flash
The Cisco 4500-M and Cisco 4700-M store a small software image in the boot helper Flash, which is also called XBoot Flash memory. This memory is in the form of Flash SIMMs. The XBoot image is used to boot the Cisco IOS software across a network. You might need to boot across the network when there is no image in the system Flash or the image has been corrupted. The standard configuration of 4 MB is sufficient for use on these platforms. You only need to upgrade the XBoot image to the latest version when support for booting over a network is required using an unrecognized NPM. For example, if you have added a new NPM that was not available when your system was originally shipped, you need to upgrade the XBoot image. New XBoot images can be downloaded from Cisco Connection Online (CCO).
ROMMON
The ROMMON performs initialization tasks in the Cisco 4000 series. It performs power diagnostics and sets variables after checking memory sizes. After this is completed, the main image is booted (as a default) from system Boot Flash. If you have configured your system to boot from XBoot, ROMMON boots from the secondary image. You cannot configure the amount of ROMMON memory available.
Cisco 4000 series routers support combinations of up to three network processor modules (NPMs). The table below describes the maximum number of each module supported by a specific system and the minimum Cisco IOS software release required for each module. The following table also lists product numbers for the NPMs.