[j-nsp] IPv6 Router Guard

Chris Evans chrisccnpspam2 at gmail.com
Thu Jul 28 21:34:38 EDT 2011


I'm trying to implement a firewall filter to implement IPv6 RA guard on an
EX4200. I have the ACL written to block DHCP and icmp router-advertisements.
However it appears that the EX4200 only supports IPv4 at this time for
PACLs? I have applied the filter ingress to my interfaces and RA
advertisements are still passing.



This is on 11.1 code. Anyone else tried this??

EX4200-1> show configuration firewall
family ethernet-switching {
    filter RA-GUARD {
        interface-specific;
        term RA-GUARD-DHCP {
            from {
                protocol udp;
                source-port 547;
                destination-port 546;
            }
            then {
                discard;
                count DHCP;
            }
        }
        term RA-GUARD-ICMP-RA {
            from {
                protocol icmp;
                icmp-type router-advertisement;
            }
            then {
                discard;
                count ICMP-RA;
            }
        }
        term ALL-ELSE {
            then accept;
        }
    }
}


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