Deep protocol engineering expertise across BGP, OSPF, IS-IS, MPLS, and Segment Routing - from greenfield network design and multi-vendor integration to IPv6 migration, route optimisation, and production-grade troubleshooting at scale.
Our Capabilities
PalC has production engineering experience across major IP routing protocols, network designs, and multi-vendor environments - from initial architecture through live network troubleshooting.
BGP Engineering
Full-stack BGP expertise from iBGP route reflector design and eBGP peering to BGP EVPN for data centre fabrics and BGP policy engineering for ISP and enterprise WAN.
MPLS & Segment Routing
End-to-end MPLS and Segment Routing design - from LDP and RSVP-TE label distribution to SR-MPLS traffic engineering, SRv6 network programming, and fast reroute deployments.
IGP Design
Production-grade OSPF and IS-IS designs for enterprise, carrier, and data centre environments - area hierarchy, convergence tuning, summarisation, and multi-instance deployments.
IPv6 & Dual Stack
Structured IPv6 transition engineering - dual-stack deployment, 6PE/6VPE for MPLS networks, IPv6-only migrations, and SRv6 as the native IPv6 transport for modern SP networks.
Routing Security
Hardening routing infrastructure against hijacks, leaks, and misconfiguration - RPKI ROV deployment, BGPsec evaluation, IRR filtering, and control-plane protection policies.
Multi-Vendor & Interop
Real-world multi-vendor interoperability engineering - SONiC, Cisco IOS-XR, Juniper Junos, Nokia SR OS, and Arista EOS running BGP, MPLS, and EVPN together in production-grade configurations.
Proven Engineering
PalC engineers work at the protocol level - debugging route divergence, tuning convergence behavior, and implementing features from scratch in open-source stacks.
BGP EVPN - Data Centre Fabric
Symmetric IRB with ARP suppression and ECMP across leaf-spine topology - multi-vendor interop validated.
# sonic BGP EVPN with symmetric IRB neighbor SPINE peer-group neighbor fabric remote-as external l2vpn evpn address-family advertise-all-vni advertise-svi-ip VTEP auto-discovery via BGP VNI 10010 rd auto route-target import auto
Segment Routing - Traffic Engineering
IS-IS SR extensions with Topology-Independent LFA - sub-50ms convergence validated on real carrier topologies.
# is-is SR configuration + IS-IS TE metrics segment-routing mpls traffic-eng prefix-sid index 1 interface GigabitEthernet0/0/0 point-to-point hello-interval 1 hello-multiplier 3 bfd fast-detect 6 Sub-50ms convergence via TI-LFA
SRv6 - IPv6 Native Transport
SRv6 network programming with uSID compression - replacing MPLS for SP networks migrating to native IPv6 transport.
# sr6v6 config sid locator EDGE prefix 2001:db8:100::/48 policy color:100 end.DX6 sidlist [2001:db8:100::A5] End.DT4, End.DT6, End.B6.Encaps, TI-LFA via SRv6
BGP Security - RPKI ROV
Full RPKI deployment - ROA creation, validator infrastructure, and BGP policy enforcement to drop or de-prefer invalid prefixes.
# router bgp rpki server tcp 103.20.60.1 port 3323 prefix-validate disable route-map RPKI-POLICY permit 20 match rpki invalid
Architecture
IP networking spans every layer - from hardware forwarding and protocol stacks through control-plane design and operational tooling. PalC covers the full depth.
Engagement Methodology
A structured approach - from initial network audit through design, validation, deployment, and handoff to operations.
Existing topology, routing policy, traffic matrix, and device inventory fully assessed.
Protocol selection, topology design, IP addressing plan, and routing policy architecture documented.
Full topology emulation - convergence, failover, and scale testing before any production change.
Incremental production rollout with controlled traffic migration and immediate rollback capability.
Telemetry integration, runbook delivery, team knowledge transfer, and steady-state support.
Network Operations
A well-designed IP network that is not properly instrumented is difficult to operate at scale. PalC builds observability and operational tooling in parallel with the network itself.
Use Cases
eBGP unnumbered leaf-spine fabrics with EVPN-VXLAN overlay - designed on SONiC and validated across multi-vendor hardware including Edgecore, Celestica, and Arista.
IS-IS / OSPF IGP design with SR-MPLS and TI-LFA for carrier backbone networks - sub-50ms failover, traffic engineering, and operational telemetry for carrier NOC teams.
BGP peering design for IXPs and transit providers - route policy engineering, community-based traffic shaping, RPKI deployment, and IRR prefix filtering.
Structured IPv4-to-IPv6 migration for enterprise and carrier networks - dual-stack deployment, 6PE/6VPE over MPLS, SRv6 transport, and NAT64 for IPv6-only environments.
Custom routing protocol feature development in FRR, SONiC, and open-source stacks - new YANG model authoring, automated protocol conformance testing, and regression suites.
End-to-end routing security - RPKI ROV deployment, IRR-based filtering, BGP TTL security, CoPP policies, and route leak prevention across multi-vendor production networks.
Deployments across AI fabrics, multi-cloud, automation, and security.
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Next steps
Whether designing a new BGP fabric, migrating to Segment Routing, or hardening routing security, PalC engineers can accelerate your delivery.
Connect with our experts to discuss your network modernization, SONiC deployment, or AI infrastructure needs.
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