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Quanta T1048-LB9 48-Port 1GbE Switch - Back to Front Air Flow

High performance layer 2/3/4 Ethernet switch with 48 10Base-T/100Base-TX/1000Base-T ports and 4 dual speed 1GbE/10GbE SFP+ ports - Back to Front Air Flow



16 lbs
Ships within 3-5 days



Availability In stock




The Quanta LB9 can be managed through industry standard Command-Line Interface (CLI) which reduces the training and operating costs. A user friendly Web GUI is provided via a standard Web browser to manage. The LB9 also supports Simple Network Management Protocol (SNMP) both from standard MIB and private MIB for network administrator to easily configure, monitor, and manage remotely. With the evolution from IPv4 to IPv6, The LB9 is a IPv6 integrated management device.
High Availability

The Quanta LB9 is designed for high availability from both hardware and software perspective. The key features include:
  • 1+1 hot-swappable power supplies
  • Out-of-band management supported
  • 802.1D, 802.1w, and 802.1s supported
  • Up to 8 ports per link aggregation group (LACP) and up to 64 groups
  • Multi-chassis LAG for preventing the risks of single point failure
  • Up to 32 paths ECMP routing for load balancing and redundancy
  • Virtual Router Redundancy Protocol supported
High-Performance L2/L3 access deployments

With the compact 1U form factor, high density 48 gigabit ports and 4 dual speed 1GbE/10GbE uplink ports, front to back and/or back to front airflow design, the Quanta LB9 is ideal for enterprise campus or top-of-rack deployments. The 176Gbps switching capacity and 131Mpps forwarding rate enables high bandwidth connectivity to the aggregation or core layers and low power consumption ensures LB9 to be a powerful solution to aggregate data traffic and high-performance servers.
The 4-port 10GbE density in a 1U height switch provides near 1:1 subscription ratio throughout the network. This brings the benefits to organizations to deploy highly utilized networks and avoid congestion during peak hours.
Advanced IPv4 and IPv6 routing

The Quanta LB9 is a fully layer 2 and layer 3 routing switch that supports advanced IPv4 and IPv6 routing features such as RIP v1/v2, OSPF, ECMP, RIPng and OSPFv3. The multicast routing features for IGMP v1/v2/v3, DVMRP, PIM-DM/SM, MLD v1/v2 and PIM-DM6/SM6 are all supported in the LB9.

Technical Specification

Physical ports48 10Base-T/100Base-TX/1000Base-T ports
 4 1GbE/10GbE dual speed SFP+ slots
 1 RJ-45 out-of-band management port (10/100/1000)
 1 RJ-45 console port
PerformanceSwitching capacity: 176Gbps
 Forwarding rate: 131Mpps
 Memory: 1024MB DDR1
 Flash: 64MB
 MAC: 32K
 Packet buffer: 4MB
 Jumbo frame: 12K
L2 FeaturesAuto-negotiation for port speed and duplex
 Flow control: IEEE 802.3x / back-pressure
 Switching mode: store-and-forward
 Spanning Tree Protocol:
 802.1D, 802.1w, and 802.1s
 Spanning Tree Fast Forwarding
 Edge port
 Loop guard
 BPDU filter/guard
 Auto Edge
 TCN guard
 Root guard
 IEEE 802.1Q tagged based
 Port-based (up to 4k VLANs ; 3965 user configurable VLANs )
 802.1v protocol VLAN
 Voice VLAN
 MAC-based VLAN
 IP-subnet VLAN
 VTP v1/v2
 Private VLAN
 Storm control
 Unknown multicast
 Unknown unicast
 IGMP snooping
 IGMP snooping v1/v2/v3
 IGMP v1/v2 querier
 IGMP immediate leave
 Ling Aggregation
 802.3ad with LACP
 Cisco EtherChannel Liked
 Unicast/Multicast traffic balance over trunking port (dst-ip, dst-mac, src-dst-ip, src-dst-mac, src-ip, src-mac)
 Multi-chassis Link Aggregation (MLAG)
 Link state
 Port backup
QoSQueues per port: 8 queues
 QoS queue management using Weighted Round Robin (WRR), Strict Priority (SP) and hybrid (WRR+SP)
 COS: 802.1p, IP Precedence, and DSCP
 Port rate limit
 Auto VoIP
 iSCSI optimization
SecurityStatic and dynamic port security (MAC-based)
 802.1x: port-based, MAC-based, auto VLAN assignment, guest VLAN, unauthenticated VLAN
 ACL: L2/L3/L4
 IPv6 ACL: L3/L4
 RADIUS: authentication and accounting (up to 32 servers)
 TACACS+: authentication (up to 5 servers)
 HTTPS (AES 128-cbc, 3ES-cbc, Blowfish-cbc)
 SSH v1.5/v2.0 (AES 128-cbc, 3ES-cbc, Blowfish-cbc)
 User name and password: local authentication and remote authentication via RADIUS/TACACS+
 Denial of Service control
 Management IP filtering (SNMP/WEB/Telnet/SSH)
 MAC filtering
 IP Source Guard
 Dynamic ARP inspection (DAI)
 DHCP snooping
ManagementIndustrial command line interface
 CLI filtering
 Software download/upload: TFTP/Xmodem/FTP
 Configuration download/upload: TFTP/Xmodem/FTP
 Dual image backup supported
 SNMP v1/v2c/v3
 RMON 1, 2, 3 and 9
 BOOTP: client/relay
 DHCP: client/relay/option 82
 Event/error log: local flash and remote server via system log (RFC3164)
 DNS: client/relay
 LLDP (802.1ab, Link Layer Discovery Protocol)
 CDP (Cisco Discovery Protocol) version 2
 Port mirroring: one to one and many to one
 sFlow (RFC3176)
 IPv6 management:
 IPv4/IPv6 Dual Stack
 ICMPv6 redirect
 IPv6 Path MTU Discovery
 IPv6 Neighbor Discovery
 stateless auto-configuration
 manual configuration
 DHCPv6 (client)
 SNMP/HTTP/SSH/Telnet over IPv6
 IPv6 DNS resolver
 IPv6 RADIUS/TACACS+ support
 IPv6 Syslog support
 IPv6 Ping
Layer 3 featuresCIDR
 ARP (static: 128 and dynamic 3968)
 Proxy ARP
 Local proxy ARP
 Static route
 Unicast Routing: RIP v1/v2, OSPF
 Multicast Routing: IGMP v1/v2/v3, DVMRP, PIM-DM/-SM
 IGMP proxy
IPv6 Layer 3 featuresStatic route
 Unicast Routing: RIPng and OSFPv3
 Multicast Routing: MLD v1/v2, PIM-DM6/-SM6
MechanicalDimension (HxWxD): 42.8x435x393.7 mm
 Weight: 7.15kg(NET)
Environmental specificationsOperating temperature: 0~45°C
 Operating humidity: 90% maximum relative humidity
EnvironmentalReduction of Hazardous Substances (RoHS) 6
Order informationT1048-LB9 (1LB9BZZ0000) (Front to Back)
 T1048-LB9 (1LB9BZZ0001) (Back to Front)
WarrantyLimited lifetime warranty
Safety / EMC Safety
UL 60950-1 (2nd Ed.)
 CSA C22.2 60950-1-07 (2nd Ed.)
 IEC 60950-1 (2005)
 EN 60950-1 (2006)
EMCFCC 47CFR, Part 15 Class A
 ICES-003 Class A
 EN 55022 Class A
 CISPR 22 Class A
 EN 55024
 EN 61000-3-2
 EN 61000-3-3
 EN 300 386 (2008)
 VCCI Class A


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