RE: Frontier DSL Contact
Thanks to everyone that contacted me off-list. I was able to get the issue resolved with Frontier's help. -Tony
Bell South RTBH
Does anyone know if Bell South/ATT (AS6386) has a RTBH BGP community? We just experienced a DoS attack and by the time we got through to support it had stopped. The tech told us they don't offer remote triggered blackholes but I'm not sure they exactly knew what we were asking for. It looks like our other upstream (Qwest) provides RTBH via BGP community 209:0 Thanks in advance! -Tony
RE: IPv4 Multicast
I can see that IGMP is enabled on all interfaces but do I need enable something else? You need to have a multicast router or enable IGMP querier on one of your switches. For IGMP snooping to work something on the network has to be sending out PIM hellos or IGMP query messages. Without that the switch will flood multicast traffic to all ports The reason for this issue is that IGMP snooping is not really supported on any Catalyst platform without an mrouter. http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008059a9df.shtml#understand Note if you go the router method ALL multicast traffic will be sent to the router, so don't expect it to work if you have 5Gbps of multicast connected to a router with a 1Gbps interface. If all your multicast traffic is on the same layer2 network then the IGMP querier feature should work fine. -Tony
RE: Temporary mail queue services?
Does anyone know of a service that you can sign up for to add as a secondary MX to act as a mail queue if your primary MX isn't available? Here is one that I have heard of in the past: http://www.junkemailfilter.com/spam/free_mx_backup_service.html I have never used it though. -Tony
