Global commands

config
    - router
        - [no] isis [isis-instance]
            - [no] advertise-passive-only
            - advertise-router-capability {area | as}
            - no advertise-router-capability
            - [no] all-l1isis ieee-address
            - [no] all-l2isis ieee-address
            - [no] area-id area-address
            - [no] authentication-check
            - authentication-key [authentication-key | hash-key] [hash | hash2]
            - no authentication-key
            - authentication-type {password | message-digest}
            - no authentication-type
            - [no] csnp-authentication
            - [no] disable-ldp-sync
            - export policy-name [.. policy-name... up to 5 max)]
            - no export
            - export-limit number [log percentage]
            - no export-limit
            - [no] graceful-restart
                - [no] helper-disable
            - [no] hello-authentication
            - [no] iid-tlv-enable
            - [no] ignore-attached-bit
            - import policy-name [policy-name...(up to 5 max)]
            - no import
            - [no] ipv4-routing 
            - [no] ipv6-routing {native | mt}
            - ldp-over-rsvp
            - no ldp-over-rsvp
            - loopfree-alternate [remote-lfa]
            - loopfree-alternate remote-lfa [max-cq-cost value]
            - no loopfree-alternate
            - loopfree-alternate-exclude
            - no loopfree-alternate-exclude
            - level {1 | 2}
                - authentication-key [authentication-key | hash-key] [hash | hash2]
                - no authentication-key
                - authentication-type {password | message-digest}
                - no authentication-type
                - [no] csnp-authentication
                - [no] default-ipv6-unicast-metric metric
                - external-preference external-preference
                - no external-preference
                - [no] hello-authentication
                - [no] loopfree-alternate-exclude
                - preference preference
                - no preference
                - [no] psnp-authentication
                - [no] wide-metrics-only 
            - level-capability {level-1 | level-2 | level-1/2}
            - lsp-lifetime seconds
            - no lsp-lifetime
            - loopfree-alternate
            - no loopfree-alternate
            - lsp-mtu-size size
            - no lsp-mtu-size
            - lsp-refresh-interval [seconds]
            - no lsp-refresh-interval
            - [no] lsp-wait lsp-wait [lsp-initial-wait [lsp-second-wait]]
            - multi-topology
            - no multi-topology
                -  ipv6-unicast
                - no ipv6-unicast
            - overload [timeout seconds]
            - no overload
            - overload-on-boot [timeout seconds]
            - no overload-on-boot
            - [no] psnp-authentication
            - reference-bandwidth reference-bandwidth 
            - no reference-bandwidth
            - segment-routing
            - no segment-routing
                - prefix-sid-range {global | start-label label-value max-index index-value}
                - no prefix-sid-range
                - tunnel-mtu bytes
                - no tunnel-mtu
                - tunnel-table-pref preference 
                - no tunnel-table-pref
                - [no] shutdown
            - [no] shutdown
            - [no] spf-wait spf-wait [spf-initial-wait [spf-second-wait]]
            - [no] strict-adjacency-check
            - summary-address {ip-prefix/mask | ip-prefix [netmask]} level [tag tag]
            - no summary-address {ip-prefix/mask | ip-prefix [netmask]}
            - [no] traffic-engineering