The Cisco Catalyst 4948E and 4948E-F are optimized for multimedia applications, with advanced multicast support. The switches support Protocol-Independent Multicast (PIM), Source-Specific Multicast (SSM), and Bidirectional PIM (bidir-PIM), providing end users with additional scalability to support multimedia applications. Also supported are Internet Group Management Protocol (IGMP) snooping and Multicast Listener Discovery (MLD) snooping in hardware, enhancing performance and reducing network traffic by allowing a switch to dynamically add and remove hosts from a multicast group.
Interfaces/Ports
Total Number of Network Ports:
48
Token Ring Port:
No
LRE Port:
No
Uplink Port:
Yes
Bypass:
No
Modular:
No
Management Port:
Yes
USB:
No
Stack Port:
No
Number of Network (RJ-45) Ports:
48
Port/Expansion Slot Details:
48 x Gigabit Ethernet Network
Port/Expansion Slot Details:
4 x 10 Gigabit Ethernet Expansion Slot
Media & Performance
Media Type Supported:
Twisted Pair
Ethernet Technology:
Gigabit Ethernet
Ethernet Technology:
Fast Ethernet
Network Technology:
10/100/1000Base-T
I/O Expansions
Number of Total Expansion Slots:
4
Expansion Slot Type:
SFP+
Number of SFP+ Slots:
4
Network & Communication
Layer Supported:
3
Management & Protocols
Manageable:
Yes
Management:
Web-Based Management
Command Line Interface
Syslog
RMON
DHCP
VLAN
QoS
Memory
Standard Memory:
1 GB
Memory Technology:
SDRAM
Reliability
MTBF:
145422 Hour
Power Description
PoE (RJ-45) Port:
No
Power Source:
Power Supply
Redundant Power Supply Supported:
Yes
Physical Characteristics
Compatible Rack Unit:
1U
Form Factor:
Rack-mountable
Height:
1.8"
Width:
17.5"
Depth:
19.4"
Weight (Approximate):
19 lb
Miscellaneous
Package Contents:
Catalyst 4948E Ethernet Switch
AC Power Supply
Certifications & Standards:
Industry standards:
Ethernet: IEEE 802.3 and 10BASE-T
Fast Ethernet: IEEE 802.3u, 100BASE-TX, and 100BASE-FX
Gigabit Ethernet: IEEE 802.3z and 802.3ab
IEEE 802. 1D Spanning Tree Protocol
IEEE 802.1w rapid reconfiguration of spanning tree
IEEE 802. 1s multiple VLAN instances of spanning tree
IEEE 802.3 ad LACP
IEEE 802. 1p CoS prioritization
IEEE 802.1Q VLAN
IEEE 802. 1x user authentication
RMON I and II standards
Safety:
UL 60950-1
CAN/CSA-C22.2 No. 60950-1
EN 60950-1
IEC 60950-1
AS/NZS 60950
IEC 60825-1
IEC 60825-2
EN 60825-1
EN 60825-2
21 CFR 1040
EMC:
FCC Part 15 (CFR 47) Class A
ICES-003 Class A
EN55022 Class A
CISPR22 Class A
AS/NZS 3548 Class A
VCCI Class A
EN55024
ETS300 386
EN50082-1
EN61000-3-2
EN61000-3-3
NEBS:
GR-63-Core NEBS Level 3
GR-1089-Core NEBS Level 3
ETSI:
ETS 300 019 Storage Class 1.1
ETS 300 019 Transportation Class 2.3
ETS 300 019 Stationary Use Class 3.1
Environmentally Friendly:
Yes
Environmental Certification:
RoHS-6
Warranty
Limited Warranty:
1 Year
WARNING:
This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information, go to www.P65Warnings.ca.gov.
This item ships directly from the manufacturer and is not stocked in our warehouse. If stock is available at the manufacturer, the item will ship directly to you, usually within 7 - 15 business days.
Once the order has been sent to the manufacturer it can no longer be canceled.
If payment is made via credit card it will be charged before the order is sent to the manufacturer.
You must contact the manufacturer directly regarding returns and defective items.
We will contact you by email if the item is sold out or backordered (and we were unable to update the site before you placed the order) or if the item will be delayed longer than expected.
We have no control over the speed of the manufacturer's order processing, or whether they will honor your request to ship the item by any particular method.