Allied Telesis IPv6, IPv4 User Manual

Key Features

• Huge capabilities and flexibility compressed

into 1RU form factor

• Front to back cooling for optimum

rack/cabinet airflow

• Operating temperature to 50°C (122°F)

• Internal dual hot-swappable AC or DC load-

sharing power supplies remove the need for
an expensive and rack space wasting RPS

• Layer 2 and 3 IPv4 and IPv6 routing all at

wire-speed

1

• Built from a 37.6 Gbps switch fabric yielding

13.1 Million packets per second
performance

• Provides 256K Layer 3 IPv4 address table

entries

2

• Supports full 4096 VLANS with VLAN

double tagging

• Private VLANs

• Supports 4096 Layer 3 interfaces

• Fixed ports: 48 x 10/100T on the front panel

• 4 x SFP (Small Form Pluggable) gigabit

uplinks on the front panel

• A Compact Flash port, accessible via the

front panel, which enables configurations and
other files to be saved or transferred
between switches

• Asynchronous management port available via

the front panel for ease of access

• SFP uplink ports will support any

combination of 1000BASE-T, 1000BASE-SX,
1000BASE-LX or 1000BASE-ZX

• Full environmental monitoring, with alerts to

network manager in case of failure of any
PSU or FAN

• Extensive wire-speed traffic classification

• Policy-based QoS features

• Min / max bandwidth control with

bandwidth slice resolution down to 1Kbps

• Buffered max bandwidth control at egress

on all ports, and on each of 8 egress queues
per port

• Three drop precedence (green, yellow and

red) per priority queue on egress for
improved TCP-IP bandwidth limiting
performance

• SNMP MIB available for monitoring QoS

traffic counters

• Low latency for voice and multi-media

support

• SNMPv3 with extensive MIB support

• Advanced routing protocols OSPF, BGP-4,

IS-IS, RIP and RIPv2, DVMRP, PIM-SM,
PIM-DM

• Support for equal cost multi path (ECMP)

routing in hardware

• Multiple Spanning Tree Protocol (MSTP)

(802.1s)

• Management stacking

• Port trunking

• Port mirroring

• Wire-speed multicasting

• Secure SSH capability on management and

access

• 802.1x support

• DHCP Snooping

• DHCP Option 82

• EPSR

1

An optional accelerator card is required to expand the
IPv6 capability to wire-speed performance.

2

For 256K Layer 3 IPv4 address table entries either the
256 MB SDRAM or 512MB SDRAM must be fitted.

Allied Telesis www.alliedtelesis.com

Datasheet | Switches

AT-8948

MultiIayer IPv4 and IPv6 Switch

Datasheet | Switches

AT-8948

4 x 1000BASE-X SFP uplinks
48 x 10/100BASE-T copper ports

Industry-leading Features

The AT-8948 offers performance, flexibility, and
reliability. Packaged in a compact 1RU standard
rack mount chassis, the AT-8948 is a highly
featured access solution incorporating a new
generation switching core for wire-speed layer 3
IPv4 and IPv6 routing, exceptional Quality of
Service (QoS) features, and a robust hardware
design with hot-swappable dual power supplies.

Policy-Based Quality of Service

Comprehensive, low latency QoS features
operating at wire-speed provide flow-based
traffic management with full classification,
prioritization, traffic shaping and min/max
bandwidth profiles.The AT-8948 QoS features
are ideal for service providers wanting to ensure
maximum availability of premium voice, video
and data services, and at the same time manage
customer service level agreements (SLAs). For
enterprise customers, the AT-8948 QoS features
protect productivity by guaranteeing
performance of business-critical applications
including VoIP services, and help restore and
maintain responsiveness of enterprise
applications in the networked workplace.

IPv6 Capability

The AT-8948P (IPv6 option) is one of the few
switches on the market today that can provide
high performance wire-speed IPv6 unicast and
multicast routing, and IPv6 QoS features.The
AT-8948P pushes IPv6 capability to the network
edge and allows IPv6 early-adopters to get a
head start in the migration to next generation
IPv6 networks.

Allied Telesis www.alliedtelesis.com

AT-8948

| MultiIayer IPv4 and IPv6 Switch

Reliability

Dual internal hot-swappable load-sharing power
supplies provide ultimate space-saving reliability
and redundancy for maximum service uptime.
Both 110/240VAC and -48VDC PSU versions
are available.There is no requirement for an
external RPS, and combined with front-to-back
cooling and a 1RU height, the AT-8948 is
perfect for the high-density rack environment
where conditions are demanding and space is
at a premium.

Flexibility

Four hot-swappable gigabit SFP uplink ports can
be aggregated to provide a total of 4Gbps of
uplink bandwidth, and can support any
combination of gigabit copper, or short haul and
long haul fiber SFP modules.This flexibility of
uplink interface options caters for multiple
applications and connectivity requirements.

Power to Perform

The AT-8948 top-of-the-line multilayer switch is
built to meet the needs of high performance
network services.Together with Allied Telesis'
advanced software feature set, AlliedWare, the
AT-8948 is a superior access switching solution,
bringing true intelligence to the edge.

Performance

Reliability

MTBF
AT-8948: 300,000 hours

3

Acoustic noise

46.0 dB

Power Characteristics

AC Voltage: 100-240V AC ±10% auto ranging
Frequency: 47-63Hz
DC Voltage: 40-60V DC

Power Consumption

AT-8948A: 47 Watts (160 BTU/hour) maximum
AT-8948P: 90 Watts (307 BTU/hour) maximum

Environmental Specifications

Operating Temperature Range:
0°C – 50°C (32°F – 122°F)

Storage Temperature Range:

-25°C – 70°C (-13°F – 158°F)

Operating Relative Humidity Range:
5% – 80% non-condensing

Storage Relative Humidity Range:
5% – 95% non-condensing

Altitude:
3,050 Meters maximum (10,000ft)

Physical Dimensions

AT-8948:
Height: 44.5mm (1.75")
Width: 440mm (16.7")
Depth: 440mm (16.7")

4

Mounting: 19" rack mountable, 1 RU form-factor
Weight: (AT-8948 including one AT-PWR01
and one AT-FAN01) 7.1 kg (15.7 lbs)
unpackaged, 9.1 kg (20.1 lbs) packaged
Ship dimensions: 580mm / 22.84 inches x
530mm / 20.87 inches x 145mm / 5.71 inches
(L x W x D)

AT-PWR01 and AT-FAN01
Height: 41mm (1.6")
Width: 225mm (8.9")
Depth: 130mm (5.1")
PSU weight (AT-PWR01) (AC or DC):

1.0 kg (2.2 lbs) unpackaged or 1.8 kg (4.0 lbs)
packaged
Fan only module weight (AT-FAN01):

0.6 kg (1.3 lbs) unpackaged or 1.4 kg (3.1 lbs)
packaged

Electrical Approvals & Compliances

EMC
EN55022 class A, FCC class A,VCCI class A
Immunity: EN55024, EN61000-3-2/3

Safety

UL60950, CAN/CSA-C22.2 No. 60950-00,
EN60950, AS/NZS3260
Certification: UL, cUL,TUV

Country of Origin

Singapore

3

This is with two PSUs installed and a spare PSU
carried.

4

This depth measurement excludes the PSU handles.

Standards and Protocols

Software Release 2.9.1

BGP-4

RFC 1771 Border Gateway Protocol 4
RFC 1966 BGP Router Reflection
RFC 1997 BGP Communities Attribute
RFC 1998 Multi-home Routing
RFC 2385 Protection of BGP Sessions via the TCP MD5
Signature Option
RFC 2439 BGP Route Flap Damping
RFC 2858 Multiprotocol Extensions for BGP-4
RFC 2918 Route Refresh Capability for BGP-4
RFC 3065 Autonomous System Confederations for BGP
RFC 3392 Capabilities Advertisement wiht BGP-4

Encryption

RFC 2104 HMAC
RFC 2451 The ESP CBC-Mode Cipher Algorithms
FIPS 180 SHA-1
FIPS 186 RSA
FIPS 46-3 DES
FIPS 46-3 3DES

Ethernet

RFC 894 Ethernet II Encapsulation
RFC 1321 MD5
IEEE 802.1D MAC Bridges
IEEE 802.1Q Virtual LANs
IEEE 802.1v VLAN Classification by Protocol and Port
IEEE 802.2 Logical Link Control
IEEE 802.3ab 1000BASE-T
IEEE 802.3ac VLAN TAG
IEEE 802.3ad (LACP) Link Aggregation
IEEE 802.3u 100BASE-T
IEEE 802.3x Full Duplex Operation
IEEE 802.3z Gigabit Ethernet
GARP
GVRP

General Routing

RFC 768 UDP
RFC 791 IP
RFC 792 ICMP
RFC 793 TCP
RFC 826 ARP
RFC 903 Reverse ARP
RFC 925 Multi-LAN ARP
RFC 950 Subnetting, ICMP
RFC 1027 Proxy ARP
RFC 1035 DNS
RFC 1055 SLIP
RFC 1122 Internet Host Requirements
RFC 1142 OSI IS-IS Intra-domain Routing Protocol
RFC 1144 Van Jacobson's Compression
RFC 1256 ICMP Router Discovery Messages
RFC 1288 Finger
RFC 1332 The PPP Internet Protocol Control Protocol
(IPCP)
RFC 1519 CIDR
RFC 1542 BootP
RFC 1552 The PPP Internetworking Packet Exchange
Control Protocol (IPXCP)
RFC 1570 PPP LCP Extensions
RFC 1582 RIP on Demand Circuits
RFC 1661 The Point-to-Point Protocol (PPP)
RFC 1762 The PPP DECnet Phase IV Control Protocol
(DNCP)
RFC 1812 Router Requirements
RFC 1877 PPP Internet Protocol Control Protocol
Extensions for Name Server Addresses
RFC 1918 IP AddressingExtensions.