I've set up a site-to-site VPN tunnel which works well when our SR520 is newly re-booted but then, after 5-10 minutes, goes slow (pings take ~400ms instead of ~40), and then fails altogether.Has this sort of behaviour been seen before and, if so, doe...

Hi,I'm trying to combine dynamic and static NAT on an SR520. My dynamic NAT is specified with:ip nat inside source list 1 interface Dialer0 overloadaccess-list 1 permit 192.168.0.0 0.0.7.255In addition to this I want to perform static NAT for a coupl...

I'm trying to configure a zone-based firewall on an SR520 and am confused about the 'not' criterion. The 'zone-design-guide' says (my stress):Class-maps define the traffic that the firewall selects for policy application. Layer 4 class-maps sort the ...

Hi,I'm new to Cisco. We've (an independent school) just bought an SR520 with a view to replacing one of our Draytek 2820s. We need to set up some site-to-site VPN with NAT and the Drayteks won't do it.I've been trying to configure the SR520 in just t...