Description
G7860A supports both MPLS-TP and Carrier Ethernet (EPL, EVPL, EPLAN, EVC defined in MEF) for packet transportation. In addition to native Ethernet transport, G7860A can be used as the gateway for PDH and SDH/SONET networks to enter PSNs using Circuit Emulation and Encapsulation technologies. Encapsulation technologies include TDMoE, TDMoIP, and TDMoMPLS. Circuit Emulation includes CESoPSN (NxDS0/64K) with CAS, SAToP (Unframed E1/T1), T3, and CEP (SDH/SONET paths). Pseudowires make grooming and multiplexing DS0, E1/T1, T3, and SDH/SONET paths easier, and service integrity can also be monitored and protected via packet network protection schemes.
One G7860A with up to 81G packet switching capacity supports six GbE/10GbE SFP+ and four 1GbE SFP built-in interfaces along with 16 E1/T1 built-in ports. With two hot-swappable plug-in slots, the system capacity can be scaled up with additional E1/T1 and T3 ports, STM-n/OC-n, or GbE electrical/optical interfaces.
G7860A provides high availability and reliability required by Carrier, Power Utility, Military, Government, and Transportation applications by supporting MPLS-TP LSP 1:1/1+1 protection and ERPS, with protection switching time <50ms. Ethernet and MPLS section and end-to-end OAM are also provided for monitoring service integrity and performance. The compact G7860A is only 1U height, but its powerful functions enable customers to provision a service-grooming hub, ring, or mesh 10G packet network with ultimate ease.
Features
Mechanical and Electrical
- 1U height, 19” width ETSI unit (front access)
- Power supply: hot swappable DC/AC, dual for redundancy
- Operating Temperature: -20 ºC to 65 ºC
System capacity
- Up to 6 x 10GbE SFP+ ports
- Up to 16 x 1GbE Base-T
- Up to 20 x 1GbE SFP
- Up to 80 x E1/T1 ports
- Up to 8 x STM-1/OC-3 ports or 2 x STM-4/OC-12 ports
- Up to 4 x STM-1/OC-3 MSP pairs or 2 x STM-4/OC-12 pairs
- 16 x E1/T1 ports with SCSI interface
MPLS-TP
- Any Ethernet port can be configured as NNI (MPLS port) or UNI (Ethernet service port)
- Bi-directional LSP
- Static LSP/PW provisioning via NMS
- Ethernet (VPWS, VPLS, H-VPLS) and TDM (CESoPSN, CEP, and SAToP) services
- MPLS-TP OAM and QoS
- TDM PW Support:
- 32 TE1 card: up to 256 pseudowires
- MB E1/T1: up to 256 pseudowires
- B16 card: up to 512 pseudowires
- DS3 card: up to 168 pseudowires
Carrier Ethernet
- L2 Switching/Bridging
- STP, RSTP, MSTP
- LLDP
- Port based VLAN and port isolation
- VLAN Stacking (Q-in-Q)
- CE OAM
- CFM: Ethernet Service OAM (802.1ag/Y1731)
- EFM: Ethernet Link OAM (802.3ah)
- Flow Control
- Link Aggregation Control Protocol (LACP)
- Jumbo Frame (MTU) = 9600
- EPL, EVPL, EP-LAN, EPV-LAN, EP-Tree
- E-Access: EPL-Access, EPVL-Access
Network Protection
- MPLS-TP
- LSP 1+1/1:1
- LSP E2E protection switching < 50ms
- PW Redundancy
- Based on TP OAM for fault detection< 50ms
- CE
- ERPS Ring (G.8032) Protection
- ELPS (G.8031) Linear Protection< 50ms
- SDH/SONET
- STM-n/OC-n MSP 1+1 Protection
Management
- Fully manageable via SNMP (v1, v2, v3)
- Fully manageable via CLI
- Serial port
- SSH, Telnet via Ethernet
- GbE Interface in-bands
- Account Security
- Two types of privileges: Operator (read only) and Administrator (read and write)
- Radius Client and 802.1x Authentication
- Upload/Download NE configuration
- TFTP
- SFTP
- Syslog, NTP
TDM Pseudowire Services
- Circuit Emulation
- DS0 (64K timeslots): CESoPSN (NxDS0/64K) with CAS & multiframe PW
- Unframed E1/T1: SAToP PW
- VC-3/4/11/12, VT-1.5/2, STS-1/3: CEP PW
- PDH Timing recovery: ACR/DCR/System
- ACR/DCR support
- 32TE1 card: up to 32 instances
- MB E1/T1: up to 16 instances
- B16 card: up to 256 instances
- SDH Circuit Emulation over Packet (CEP)
- Encapsulation
- PW/LSP (TDM over MPLS-TP),
- “Dry martini”, MEF 8 (TDM over Ethernet),
- TDM over IP
- PDH cross-connection to SDH/SONET
- DS0 cross-connection
- Two-way FE1(N*DS0) to FE1/VC12/STM1 cross-connection
- Two-way FE1(N*DS0) to FE1(N*DS0) cross-connection
Ethernet Pseudowire Services
- E-Line, E-LAN, E-Tree services as defined by MEF 9 and 14 and using VPWS/VPLS*
- Native Ethernet packets supported
- Encapsulation: PW/LSP (MPLS-TP), VLAN tagging (1Q), VLAN double tagging (Q-in-Q)
VPLS
- VPLS & H-VPS bridging
- 32K MAC addresses
- 256 VPLS instances per device
- Split horizon to prevent forwarding loops
CoS/QoS
- 8 Priority Queues
- Scheduling: Strict Priority, WRR with Hierarchy
- Ingress Policing & Egress Shaping per service
- CIR / PIR (EIR) 2-rate-3-color
- MPLS: TC/EXP-Inferred-PSC (Per Hop Behavior Scheduling Class) LSP
Timing
- SSM quality level compatible
- IEEE 1588 v2 (via SyncE only)
- PTP Clocks: Ordinary/Boundary/Transparent
- ToD (Time of day)
- 1-PPS (One Pulse per second) output interface
- G.8265.1 Profile (Frequency Synchronization)
- SyncE
- Synchronous Ethernet from all built-in and plug-in GbE, 10GbE ports
- ITU-T Ethernet Synchronous Message Channel (ESMC)
- Stratum 3 timing
- TDM line clock: E1/T1
- External clock input and output (2 Mbps / 2 MHz)
Hardware Protection
- Dual-power redundancy per box
- Dual-box redundancy
- E1 port protection across two boxes
- Ethernet port LAG across two boxes
- STM-1/4 port MSP across two boxes
L3 Routing
- VRF without multicast protocols
- ARP, Ping, Trace Route, Static Route
- VRRP
- RIP v1/v2
- OSPF
- Routing among Physical Ethernet ports, VLAN virtual port (VLAN routing), and PW ports.
- 32 Subinterfaces
- IGMP v2/v3
- PIM-SM
- NTP server/client
*Future Option
In addition to native Ethernet traffic, TDM circuits including DS0 timeslots, E1/T1 channels, and SDH/SONET paths can all be emulated as packets via pseudowires, multiplexed by G7860A, and switched to different sites via packet networks.
Protection scheme of an MPLS-TP network is standardized as part of the protocol. By deploying static nodes in the network, traffic transported by a tunnel between remote ends is protected by two label switching paths (LSPs) to achieve 1:1 or 1+1 protection.
In 1+1 mode, traffic is copied onto both working and protection LSPs. When receiving traffic, the remote LER only selects traffic from one of the two LSPs to decapsulate.
In 1:1 mode, traffic flows only on the working LSP. When a failure occurs on the working LSP, traffic is then switched to the protection LSP within 50 ms.
