Datasheet

Data Sheet
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Feature Benefit
High-Performance IP Routing
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Cisco Express Forwarding hardware routing architecture delivers extremely high-
performance IP routing.
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Basic IP unicast routing protocols (static, RIPv1, and RIPv2) are supported for small-
network routing applications.
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IPv6 unicast routing capability (static, RIP, and OSPF protocols) forwards IPv6 traffic
through configured interfaces (requires the Advanced IP Services license).
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Advanced IP unicast routing protocols (OSPF, Interior Gateway Routing Protocol
[IGRP], EIGRP, and Border Gateway Protocol Version 4 [BGPv4]) are supported for
load balancing and constructing scalable LANs. The IP Services license is required.
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Policy-Based Routing (PBR) allows superior control by enabling flow redirection
regardless of the routing protocol configured. The IP Services license is required.
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Inter-VLAN IP routing provides for full Layer 3 routing between two or more VLANs.
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Protocol Independent Multicast (PIM) for IP Multicast routing is supported, including
PIM sparse mode (PIM-SM), PIM dense mode (PIM-DM), and PIM sparse-dense
mode. The IP Services license is required.
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Distance Vector Multicast Routing Protocol (DVMRP) tunneling interconnects two
multicast-enabled networks across nonmulticast networks. The IP Services license
is required.
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Fallback bridging forwards non-IP traffic between two or more VLANs. The IP
Services license is required.
Integrated Cisco IOS
Software Features for
Bandwidth Optimization
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Per-port broadcast, multicast, and unicast storm control prevents faulty end stations
from degrading overall systems performance.
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IEEE 802.1d Spanning Tree Protocol support for redundant backbone connections
and loop-free networks simplifies network configuration and improves fault tolerance.
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PVST+ allows for Layer 2 load sharing on redundant links to efficiently use the extra
capacity inherent in a redundant design.
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IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) allows a spanning-tree
instance per VLAN, enabling Layer 2 load sharing on redundant links.
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ECR provides load balancing and redundancy.
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VPN routing/forwarding (VRF)-Lite enables a service provider to support two or more
VPNs, with overlapping IP addresses.
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Local Proxy Address Resolution Protocol (ARP) works in conjunction with Private
VLAN Edge to minimize broadcasts and maximize available bandwidth.
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VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk link.
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VLAN Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP trunks
by flooding broadcast traffic only on trunk links required to reach the destination
devices.
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Internet Group Management Protocol v3 (IGMP) Snooping for IPv4 and IPv6 MLD v1
and v2 Snooping provide fast client joins and leaves of multicast streams and limits
bandwidth-intensive video traffic to only the requestors.
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IGMP filtering provides multicast authentication by filtering out nonsubscribers and
limits the number of concurrent multicast streams available per port.
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Multicast VLAN registration (MVR) continuously sends multicast streams in a
multicast VLAN while isolating the streams from subscriber VLANs for bandwidth
and security reasons.
QoS and Control
Advanced QoS
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Standard 802.1p CoS and DSCP field classification are provided, using marking and
reclassification on a per-packet basis by source and destination IP address, source
and destination MAC address, or Layer 4 TCP or UDP port number.
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Cisco control- and data-plane QoS ACLs on all ports help ensure proper marking on
a per-packet basis.
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Four egress queues per port enable differentiated management of up to four traffic
types across the stack.
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SRR scheduling ensures differential prioritization of packet flows by intelligently
servicing the ingress and egress queues.
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Weighted tail drop (WTD) provides congestion avoidance at the ingress and egress
queues before a disruption occurs.
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Strict priority queuing guarantees that the highest-priority packets are serviced ahead
of all other traffic.
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There is no performance penalty for highly granular QoS functions.