The Cisco 5921 Embedded Services Router (ESR) is designed to operate on small, low-power, Linux-based platforms. It helps integration partners extend the use of Cisco IOS into extremely mobile and portable communications systems. It also can be deployed in mission-critical mobile communications to take advantage of Cisco Mobile Ready Net capabilities that provide; Transparent access of mission-critical voice, video, or data information, Infrastructure-less networking, reaching beyond the range of a fixed network, Radio-aware routing, immediately recognizing and reacting to changes in neighbor status, and Self-forming networks, offering immediate connection with no required pre-configuration of peers and eliminating the need for connectivity to the centralized network
The Cisco 5921 ESR complements the Cisco 5915 Embedded Services (hardware) Routers. It provides integrators with a cost-effective solution for addressing smaller, extremely integrated applications. It can be combined with system-specific applications onto a single hardware platform to provide extremely small, low-power solutions.
The Cisco 5921 ESR is part of the Cisco 5900 Series ESRs, all optimized for mobile and embedded networks that require IP routing and services. The flexible, compact form factor of the Cisco 5900 routers.
| Features | Description |
| Processor | x86 – e.g., Intel Atom and Intel Core i3/i5/i7 |
| Memory | 512 MB minimum |
| Disk Space | 300 MB minimum |
| Operating System | glibc compiled Linux |
| Features | Feature Description | Cisco IOS Software Image Support | ||
| Enterprise Base | Advanced Enterprise | |||
| Cisco IOS Service Advertisement Framework (SAF) | As the variety and number of network services grows, providing timely and reliable awareness of these services starts to play a more significant role in increasing productivity and efficiency. As networks grow, so too do the services that the devices on these networks offer. Protocols responsible for the service advertisement need to scale to handle this increased load. Cisco IOS SAF provides this function. | X | ||
| MLD Proxy | MLD Proxy enables a device to learn proxy group membership information and simply forward multicast packets based upon that information. | X | ||
| Routing Protocols | ● Routing Information Protocol (RIP) Versions 1 and 2
● RIPv2 ● Open Shortest Path First (OSPF) ● Enhanced Interior Gateway Routing Protocol (EIGRP)-IP ● Border Gateway Protocol (BGP) ● Cisco Discovery Protocol ● IP Policy Routing ● IP Multicast Protocol Independent Multicast (PIM) Versions 1 and 2 ● Internet Group Management Protocol (IGMP) Versions 1, 2, and 3 ● IP Multicast Load Splitting ● Cisco Group Management Protocol (GMP) |
X | X | |
| VLANs | Up to 32 VLANs supported per router | X | X | |
| IPv4 | IPv4 support | X | X | |
| IPv6 | ● IPv6 routing and Cisco Express Forwarding switching
● IPv6 QoS ● IPv6 tunneling support ● Cisco IOS Zone-Based Firewall for IPv6 traffic |
X | ||
| Encapsulations | ● Point-to-Point Protocol (PPP)
● PPP over Ethernet (PPPoE) client and server for Fast Ethernet ● 802.1q VLAN trunking support ● Generic routing encapsulation (GRE) |
X | X | |
| Additional Protocol support | ● Telnet
● Asynchronous tunneling ● Real-time Transport Protocol (RTP) header compression ● Secure Shell (SSH) Protocol Client and Server Version 2 |
X
X |
X
X |
|
| Mobility | ||||
| Radio-Aware Routing | ● Optimizes IP routing over fixed or temporary radio networks
● Factors radio link metrics into route calculations ● Immediately recognizes and adapts to changes in network neighbor status ● Dynamic Link Exchange Protocol (DLEP) ● Router Radio Control Protocol (R2CP) ● RFC 5578 (authored by Cisco) |
X | ||
| Mobile Ad Hoc Network | OSPFv3 enhancements for mobile temporary networks | X | ||
| Mobile IP | Mobile IP and Cisco Mobile Networks in Cisco IOS Software:
● Home agent and mobile router redundancy ● Mobile router preferred interfaces ● Mobile router reverse tunneling ● Mobile router asymmetric links ● Mobile router static and dynamic networks ● A Static co-located care-of address ● Authentication, authorization, and accounting (AAA) server ● Cisco Mobile Networks Network Address Translation (NAT) Traversal over Mobile IP ● Support for Mobile IP tunnel templates, allowing configuration of IP Multicast and IPsec on Mobile IP tunnels ● Mobile IP foreign agent local routing optimization |
X | ||
| Security | ||||
| Suite-B support | Suite-B support in Cisco IOS software cryptography, including Suite-B-GCM-128, Suite-B-GCM-256, Suite-B-GMAC-128, and Suite-B-GMAC-256 as described in RFC-4869 | X | ||
| Authentication | ● Route and router authentication
● Password Authentication Protocol (PAP) ● Challenge Handshake Authentication Protocol (CHAP) ● Microsoft CHAP (MS-CHAP) local password ● IP basic and extended access lists ● Time-based access control lists (ACLs) |
X | X | |
| Secure Connectivity | Secure collaborative communications with Group Encrypted Transport VPN, or FlexVPN | X | ||
| Integrated Threat Control | Responds to sophisticated network attacks and threats using Cisco IOS Intrusion Prevention System (IPS), Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS Content Filtering, and Flexible Packet Matching (FPM) | X | ||
| Identity Management | Intelligently protecting endpoints using technologies such as AAA and public key infrastructure (PKI) | X | ||
| Security Protocols | ● IPsec
● SSL/TLS ● SRTP ● 3DES ● AES ● IKE |
X | ||
| Qos | ||||
| Traffic Management | ● QoS
● Generic traffic shaping ● Class-based Ethernet matching and mobile access routing (802.1p class of service [CoS]) ● Committed access rate ● Flow-based Weighted Random Early Detection (WRED) ● Class-Based Weighted Fair Queuing (CBWFQ) ● Low Latency Queuing (LLQ) ● Priority Queuing ● Weighted Fair Queuing (WFQ) ● Link fragmentation and interleaving (LFI) ● Traffic Policing Resource Reservation Protocol (RSVP) |
X | X | |
| Voice | ||||
| Unified communications | Cisco Unified Communications Manager Express
● With support for up to 25 phones |
X | ||
| Management | ||||
| Management Services | ● Simple Network Management Protocol (SNMP) Versions 2 and 3
● Telnet ● RADIUS ● TACACS+ ● Cisco Service Assurance Agent ● Syslog ● Response Time Reporter ● Network Time Protocol (NTP) Client and Server ● Trivial File Transfer Protocol (TFTP) client and server ● Dynamic Host Configuration Protocol (DHCP) client and server ● DHCP relay ● Hot Standby Router Protocol (HSRP) |
X | X | |
| Tool Command Language (Tcl) Scripts | Tcl script support | X | X | |
| Address Conservation | ● NAT Many-to-One (Port Address Translation [PAT])
● NAT Many-to-Many (Multi-NAT) ● DHCP Client Address Negotiation ● Easy IP Phase I |
X | X | |
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