Cisco 2901 Memory Slots
We still receive quite a few POs on the 2900 series of ISRs from Cisco and even more hits at our website from users looking for information.
Buy 2gb DRAM Memory for Cisco 2901, 2911, 2921 ISR (Cisco PN# MEM-2900-2GB): Memory - Amazon.com FREE DELIVERY possible on eligible purchases. Cisco 2901 Integrated Services Router, CISCO2901/K9 Cisco 2901 Integrated Services Router builds on 25 years of Cisco innovation and product leadership. The new platforms are architected to enable the next phase of branch-office evolution, providing rich media collaboration and virtualization to the branch while maximizing operational cost savings.
Cisco 2901 Integrated Services Router. External USB 2.0 Flash Memory Slots (Type A) 2. Memory DDR2 ECC DRAM - Default. Product Code CISCO2901-SEC/K9 Bundle Security Bundle w/SEC license PAK Rack Units 1U Interfaces 2 integrated 10/100/1000 Ethernet ports Expansion Slot(s) 2 onboard digital signal processor (DSP) slots 4 enhanced high-speed WAN interface card slots 1 onboard Internal Service Module for application services RAM 512 MB (installed) / 2 GB (max) Flash Memory 256 MB (installed) / 8 GB (max) Dimensions 43.9 cm x 43.8 cm x 4.5 cm Package Weight 11.48 Kg.
We put this comparison matrix together to help with the latter.
This info is also available elsewhere, but we have summarized this chart to show what people usually ask us about.
Of course, if we left anything out that you need, or if you have other questions, our Cisco experts would love to hear from you at 855-932-6627 or cisco@maximummidrange.com
Cisco Comparison Matrix ISRs 2901, 2911, 2921, 2951
| Integrated Services Router | Cisco 2901 | Cisco 2911 | Cisco 2921 | Cisco 2951 |
|---|---|---|---|---|
| Hardware-Based Cryptography and Acceleration | Yes | Same | Same | Same |
| Cisco Unified SRST Sessions | 35 | 50 | 100 | 250 |
| Cisco Unified CCME Sessions | 35 | 50 | 100 | 150 |
| WAN 10/100/1000 Ports | 2 | 3 | 3 | 3 |
| RJ-45-Based Ports | 2 | 3 | 3 | 3 |
| SFP-Based Ports | 0 | 0 | 1 | 1 |
| Service Module Slots | 0 | 1 | 1 | 2 |
| Double-Wide Service Module Slots | 0 | 0 | 1 | 1 |
| EHWIC Slots | 4 | Same | Same | Same |
| Double-Wide EHWIC Slots | 2 | Same | Same | Same |
| ISM Slots | 1 | Same | Same | Same |
| Onboard DSP (PVDM) Slots | 2 | 2 | 3 | 3 |
| Memory DDR2 ECC DRAM - Default | 512 MB | Same | Same | Same |
| Memory (DDR2 ECC DRAM) - Maximum | 2 GB | Same | Same | Same |
| Compact Flash (External) - Slot 0 | 256 MB | Same | Same | Same |
| Compact Flash (External) - Slot 1 | none | Same | Same | Same |
| Compact Flash (External) - Slot 0 | 4 GB | Same | Same | Same |
| Compact Flash (External) - Slot 1 | 4 GB | Same | Same | Same |
| USB 2.0 Flash Memory Slots (Type A) | 2 | Same | Same | Same |
| USB Console Port (Type B) | 1 | Same | Same | Same |
| Serial Console Port | 1 | Same | Same | Same |
| Serial Auxiliary Port | 1 | Same | Same | Same |
| Power-Supply Options | AC and PoE | AC, PoE, and DC | AC, PoE, and DC | AC, PoE, and DC |
| RPS Support (External) | No | Cisco RPS 2300 | Cisco RPS 2300 | Cisco RPS 2300 |
| Typical Power (No Modules) (Watts) | 40 | 50 | 60 | 70 |
| Max Power with AC Power Supply | 150 | 210 | 320 | 340 |
| Max Power with PoE Power Supply | 175 | 250 | 370 | 405 |
| Max Power with DC-PoE Power Supply | N/A | 140 | N/A | N/A |
Cisco 2901 Memory Slots Cheat
Cisco 2901 routerdelivers highly secure data, voice, video, and application services for small offices. It offers embedded hardware encryption acceleration, voice-and video-capable digital signal processor (DSP) slots, optional firewall, intrusion prevention, call processing, voicemail, and application services. In addition, the platforms support the industries widest range of wired and wireless connectivity options such as T1/E1, xDSL, copper and fiber GE.
Cisco 2901 Memory Upgrade
Key features of Cisco 2901/k9 includes:
- a. 2 integrated 10/100/1000 Ethernet ports
- b. 4 enhanced high-speed WAN interface card slots
- c. 2 onboard digital signal processor (DSP) slots
- d. 1 onboard Internal Service Module for application services
- e. Fully integrated power distribution to modules supporting 802.3af Power over Ethernet (PoE) and Cisco Enhanced PoE
- f. Security: Embedded hardware-accelerated VPN encryption for secure collaborative VPN communications; Integrated threat control using Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco IOS Content Filtering; Identity management that uses authentication, authorization, and accounting (AAA) and public key infrastructure
- g. Voice: High-density-packet voice DSP module, optimized for voice and video; Standards-certified VoiceXML browser services; Cisco Unified Border Element capabilities; Cisco Unity Express voicemail support; Support for Cisco Communications Manager Express and Survivable Remote Site Telephony
Cisco 2901 Router
The 2901 router that will be used as an example in the following part is the successor to Cisco’s 2500, 2600 and 2800 series lines of routers. It is 1RU (Rack Unit) in size and is often referred to as a ‘pizza box’ router.
The Front and Back of the Cisco 2901/Cisco 2901 Router-Front and Rear View
Here we will focus on the hardware setup of a Cisco router. There are a number of different module options that are available for the Cisco 2901 router. The first thing that any engineer must do with a new router (or new to them) is to configure and update it to meet the needs of its intended role in the network. To do this the engineer must connect a cable to the 2901 router to access the console of the device. With older routers the only option when connecting to the console was via a custom rollover cable which was then used in combination with a RJ-45 to DB-9 or DB-25 converter which enabled a connection with a serial port on a PC. Since almost all newer PCs (including laptops) no longer have conventional serial ports many companies have developed USB to serial cable adapters which allow a connection to these older devices via a modern USB port. The 2901 has two different available methods of connection; via the older style RJ-45 port and a rollover cable OR via a direct mini-USB connection to the device.
The Cisco 2901 (and most new series devices) includes built-in Gigabit Ethernet interfaces (2) that can be used to connect the router to the network. The Gigabit Ethernet ports on routers are pinned the same as hosts/PC’s and do not require crossover Ethernet cables to connect to Switches. Some of the higher model routers also support small-form-factor pluggable (SFP) Gigabit Ethernet ports which enable the use of fiber directly into the device.
Size of Cisco 2901
The Cisco 2901 router is able to be used in a number of different physical locations. It is small enough to be used as a desktop device or it can be used in a 19 or 23 inch rack with the addition of rack brackets. The routers that are placed into racks are higher in model number than the 2901 and therefore are larger than 1RU.
Limitations of CISCO 2901 ROUTER
The Cisco 2901 is limited in the type of additional modules that it can utilize. In the rear of the 2901 there are four Enhanced High-Speed Interface Card (EHWICs) slots. The Cisco 2911 router, for example, also supports a single Service Module (SM) on top of supporting the same four EHWIC slots. Generally speaking the higher the router series number the more flexibility will exist on type of module supported.
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Note: If you want to purchase Cisco 2900 series routers and accessories, you can visit: https://www.router-switch.com/Price-cisco-routers-cisco-router-2900-series_c39
Cisco 2901 Manual
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