Router Matches:
| - | Internet Exchange | ASN | IP Address |
|---|---|---|---|
 | LINX LON1 | AS205111 / ZOHO Corporation B.V | 195.66.231.252 |
| LINX LON1 | AS205111 / ZOHO Corporation B.V | 2001:7f8:4::3:2137:1 |
Undesirable broadcast/multicast packets detected:
Sometimes when a bgp.tools collector is present on a exchange, it will detect packets that ideally should not be sent to a IXP LAN. Listed below are some examples of such packets detected for this MAC address
| When | Entry |
|---|---|
| 28 Nov 25 07:59 +0000 | RA=== Ethernet === SrcMAC: d4:af:f7:08:af:c5 DstMAC: 33:33:00:00:00:01 EthernetType : IPv6=== IPv6 === Version: 6 TrafficClass: 0 FlowLabel: 0 Length: 64 NextHeader: ICMPv6 HopLimit: 255 SrcIP: fe80::d6af:f7ff:fe08:afc5 DstIP: ff02::1=== ICMPv6 === Type: RouterAdvertisement |
IPv6 Router Advertisements are undesirable on peering LANs as they advertise default routes to other members of the exchange (assuming they are as well configured to receive them).
On Cisco / Arista the transmission of these packets is enabled by default. Here are some example configuration examples that disable RAs.
You should always check with your vendor and operational documentation before applying any configuration. Incorrect application of configuration could cause issues to your network!
- Cisco
- - ipv6 nd suppress-ra
- Arista
- - ipv6 nd ra disabled all