Hi Fernando, What is the result when you try to ping an address on the internet and source it from ISP A's interface? Does the ping drop or you get responses back? Also, try to do a trace for a public address and source it from the interface connect...

It's not a mandate to always run BGP although it's a good practice to in a multi-homed environment but you can always set up an SLA with your providers to advertise your purchased address space and also have them tweak the BGP parameters when they ad...

Hi Remi, The IOS-XE and IOS instruction set is different and have different ways of handling things internally. This comparison might be an apples to orange comparison. Try to deny the port ranges in PAT and see if that helps, otherwise you may also...

Hi Fernando, It is advisable to use a provider independent address space whenever one wants to use two different ISPs for load balancing out to the internet. Do you have provider independent public address space? As per your post it seems that the V...

I second Philip here, for VOIP applications and the kind of port range and protocols it requires to be NATted it's easier to pull it off with a new IP address. Thanks, Shaunak