How are JunOS firewall filters converted to Cisco ACLs?

JunOS firewall filter terms are translated to IOS-XE extended ACLs or prefix-lists, mapping from/then clauses to permit/deny entries with proper match criteria.

Can JunOS policy-statements translate to route-maps?

Yes. Policy-statement terms with from/then logic are converted to route-map entries with match and set clauses, preserving prefix-list references and community operations.

What about JunOS interface configurations?

JunOS unit-based interfaces are flattened to IOS-XE interface configurations with proper IP addressing, descriptions, and protocol assignments on physical and sub-interfaces.

Juniper JunOS to Cisco IOS Router Migration

Migrating from Juniper JunOS to Cisco IOS/IOS-XE? NetConverter's comprehensive multi-step pipeline automates the conversion of firewall filters, routing protocols, and interfaces with 95%+ accuracy and confidence scoring.

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The JunOS to IOS Challenge

Structural Differences

JunOS hierarchical configuration must be flattened into Cisco's command-based CLI structure.

Filter to ACL Conversion

Juniper firewall filters with terms need translation to Cisco ACLs with numbered or named entries.

Policy Framework

JunOS routing policies must be converted to Cisco route-maps with different match/set semantics.

How NetConverter Solves It

Semantic Understanding

Our translation pipeline understands JunOS configuration intent, not just syntax, for accurate translation.

Complete Filter Translation

Firewall filters become extended ACLs with proper sequence numbers and permit/deny actions.

Policy Conversion

Routing policies become route-maps with proper match conditions and set clauses.

4-Tier Validation System

Every translation undergoes comprehensive validation: syntax correctness, semantic accuracy, vendor best practices compliance, and AI-assisted review.

Confidence Scoring

Each conversion includes a confidence score indicating translation quality, helping you prioritize review efforts and ensuring production readiness.

See the Conversion in Action

Juniper JunOS (Source)Start Free Migration

interfaces { ge-0/0/1 { description "DC-Interconnect"; unit 0 { family inet { address 172.16.0.1/30; } } } } routing-options { router-id 10.0.0.2; autonomous-system 65100; } protocols { bgp { group DC-PEER { type external; peer-as 65200; neighbor 172.16.0.2 { description "Remote-DC"; authentication-key "DC-BGP-KEY"; import INBOUND-FILTER; export ADVERTISE-LOCALS; } } } } policy-options { prefix-list LOCAL-NETS { 10.100.0.0/16; 10.200.0.0/16; } policy-statement ADVERTISE-LOCALS { term local-routes { from prefix-list LOCAL-NETS; then accept; } } }

Cisco IOS-XE (Target)Start Free Migration

! Interface Configuration interface GigabitEthernet0/0/1 description DC-Interconnect ip address 172.16.0.1 255.255.255.252 no shutdown ! ! BGP Configuration router bgp 65100 bgp router-id 10.0.0.2 bgp log-neighbor-changes neighbor 172.16.0.2 remote-as 65200 neighbor 172.16.0.2 description Remote-DC neighbor 172.16.0.2 password DC-BGP-KEY ! address-family ipv4 network 10.100.0.0 mask 255.255.0.0 network 10.200.0.0 mask 255.255.0.0 neighbor 172.16.0.2 activate neighbor 172.16.0.2 prefix-list LOCAL-NETS out exit-address-family ! ip prefix-list LOCAL-NETS seq 10 permit 10.100.0.0/16 ip prefix-list LOCAL-NETS seq 20 permit 10.200.0.0/16

Migration Results

95%+

Accuracy

40x

Faster

<2min

Per Config

For Most

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