SR-4900
| Hardware Specifications | |
| Line Cards | •30xSFP+ , 4QSFP •34SFP+ •10xSFP+ , 6xQSFP |
| Slots | •14 slot •Backplane based on ATCA •3+1 fabric cards •1+1 shelf management •10 line cards |
| Backplane | •ATC-based design for Zone 2 •Customized design for Zone 3 •Topology is dual-dual star • |
| Hardware Specifications | |
| Fabric Card | •Intel Xeon D-1548 CPU •128 GB SSD •32 GB RAM •Console port and USB port •ToD, 1PPS in/out and 10 MHz in/out ports for PTP 1588 |
| Switching Capacity | •5.4 Tbps for backplane •7 Tbps for line cards |
| Fan | 2 pluggable, hot swappable down to up fans |
| Physical Specification | Height: 37.8 cm Width: 44.5 cm Depth: 28 cm |
| L3 Specifications | |
| Routing | •OSPF v2, OSPF v3, ISIS, BGP, MP-BGP, BGP-LU •BGP MPLS fast reroute (FRR) •PBR •Ethernet OAM ( Y.1731 and 802.1ag) • 64-way Equal-Cost Multipath (ECMP) •Segment routing •ISIS extension •OSPF extension •Topology Independent Loop Free Alternatives (TI-LFA) •Multicast Protocols •PIM-SM, PIM-DM •IGMP •MLDv2 |
| MPLS | •LDP, T-LDP •RSVP-TE, MPLS-TE •Constrained Shortest Path First (CSPF) •MPLS-TP |
| L3 Specifications | |
| VPN | •VPWS, VPLS • L3VPN •L2VPN, EVPN •6PE, 6VPE •Inter-AS MPLS VPN (option A, B, C) |
| Reliability | •VRF • IPv4 and IPv6 BFD •VRRP (255 VRRP group) |
| FIB entries | •IPv4 250k subnets, 750 k hosts •IPv6 160 k subnets and hosts •MAC 750 k |
| Control Plane | |
| IP services | DHCP client, DHCP server, DHCP relay, DNS |
| Management | •Netconf / Yang model •SSH v1/v2, FTP, TFTP, SCP, SNMP, port mirroring •Syslog •TACACS+, RADIUS |
| QoS | •DSCP, CoS, MAC, ACL classification •Inbound SrTcm/TrTcm policer •Egress port shaping •PQ, WFQ, LPQ and CBWFQ queueing •SP, WRR, and WDRR scheduling •WRED |
| Ethernet | •LLDP •EVC, EFP •XSTP |
| Timing and Synchronization | •PTP (Class-C timing) •NTP •SyncE with Ethernet Synchronization Message Channel (ESMC) |