Cisco NIM-VAB-A= network switch module

C2960X-STACK-RF

NIM-2T=

NIM-ES2-8=

JL325A

JL078A

FlexStack is the name of the stacking technology used by the Cisco Catalyst 2960-S Series of fixed Ethernet switches. FlexStack is specific to Cisco Catalyst 2960-S switches, and only Cisco Catalyst 2960-S Series Switches use FlexStack.

FlexStack-Plus is the name of the stacking technology used by the Cisco Catalyst 2960-X and 2960-XR Series of fixed Ethernet switches. FlexStack-Plus is specific to the 2960-X and 2960-XR Series of switches.

Both FlexStack and FlexStack-Plus require a specific external module in order to stack together. In addition to theFlexStack and FlexStack-Plus modules , a special FlexStack cable is also required to interconnect the modules. There are two different modules for FlexStack. The FlexStack module (PID: 2960S-STACK) is for 2960-S, and the FlexStack-Plus module (PID: 2960X-STACK) is for 2960-X and 2960-XR. These two modules are different sizes and cannot be inserted into the wrong 2960 model. Each FlexStack module supports two FlexStack ports. The FlexStack module is inserted into the rear of the Cisco Catalyst 2960 switch. Two FlexStack cables, inserted into the FlexStack module, provide data path redundancy for traffic flowing across the stack. Using FlexStack cables, the physical members of the stack form a ring, providing the built-in redundant data path for each member of the stack. FlexStack and FlexStack-Plus share the same stack cable types. You do not need different FlexStack cable types for FlexStack and FlexStack-Plus.

FlexStack and FlexStack-Plus are optional. In order for a 2960 switch to stack, a separate FlexStack or FlexStack-Plus module (depending upon your exact 2960 model) must be inserted in the rear of the switch. Without this module, stacking cannot function. Figure 3 shows a FlexStack-Plus module to be inserted into the rear of a Cisco Catalyst 2960-X switch. All FlexStack module types are hot swappable.

Cisco Catalyst 2960 switches running FlexStack and FlexStack-Plus use a hop-by-hop method of transferring Ethernet packets across the stack. Packets traverse the stack by going from one member to another over the FlexStack links until the packet reaches its destination. This is a behavior similar to that of multiple standalone Ethernet switches forwarding packets from one switch to another.

Switches in a stack communicate with each other using the FlexStack protocol. The FlexStack protocol allows the FlexStack members to behave as one logical switch. The FlexStack protocol runs on each member. The FlexStack protocol is used by the master switch to manage the other members. The master tracks the presence of each member, the member’s availability, the Cisco IOS® Software image, and the status of each member’s FlexStack connections. The FlexStack protocol is the same for FlexStack on the 2960-S models and the 2960-X and XR models. Because it is the same protocol for all models of 2960, the different 2960 model types can be stacked together.

Cisco® 4400 Series Integrated Services Router Network Interface Modules (ISRNIMs) provide highly reliable synchronous serial WAN connections for remote sites. These interfaces use well-known point-to-point WAN protocols such as High-Level Data Link Control (HDLC) and Point-to-Point Protocol (PPP) as well as Frame Relay, offering cost-effective virtualized WAN connections in both point-to-point and point-to-multipoint designs. You can mix and match NIMs to tailor cost-effective solutions for common networking solutions for low- and high-density WAN aggregation.

The 4- and 8-port Cisco® Gigabit Ethernet LAN Switch Network Interface Modules (NIMs) can reduce your company's total cost of ownership (TCO) by integrating Gigabit Ethernet switch ports within Cisco 4000 Series Integrated Services Routers (ISRs). These low-density Gigabit Ethernet switches offer small to medium-sized businesses and enterprise branch offices a combination of switching and routing integrated into a single device (Figure 1).
Integration of these switches with Cisco IOS-XE Software allows network administrators to manage a single device using Cisco management tools or the router command-line interface (CLI) for LAN and WAN management needs. This approach reduces network complexity, lowers maintenance contract costs, and lessens staff training needs. It also simplifies software qualification efforts and delivers a consistent user experience at branch offices. Additionally, these low-density Gigabit Ethernet switching modules enable Cisco's industry-leading power initiatives, including per-port Power over Ethernet (PoE) and Power over Ethernet Plus (PoE+) power monitoring, which enhances the ability of the branch office to scale to higher performance requirements and still meet environmental initiatives for IT teams to operate a power-efficient network.
The 4- and 8-port Gigabit Ethernet LAN Switch NIMs provide line-rate Layer 2 switching across onboard Gigabit Ethernet ports. The 4-port NIM has four 10/100/1000 switched Gigabit Ethernet ports. The 8-port NIM has eight 10/100/1000 switched Gigabit Ethernet ports, with a PoE/PoE+ version capable of powering all eight ports. The NIMs furthermore enable direct module-to-module communication through the use of the multigigabit fabric (MGF).
The new features for the Gigabit Ethernet LAN Switch NIMs include four quality-of-service (QoS) queues per port, Shaped Deficit Weighted Round Robin (SDWRR), dynamic secure port, intra chassis cascading, up to 30W of PoE/PoE+ per port, and PoE per-port monitoring and policing.

2-port stacking module for selected Aruba switches

Aruba 3810M 1QSFP+ 40GbE Module is an accessory for the Aruba 3810M Switch that offers the use of 1 QSFP+ port.

FlexStack-Plus hot-swappable stacking module, Refurbished

2-Port Serial WAN Network Interface Card

8-port Layer 2 Gigabit Ethernet LAN Switch NIM, Spare

Aruba 2930M 2-port Stacking Module

Aruba 3810M 1QSFP+ 40GbE Module

Cisco

Cisco

Cisco

HPE

HPE