Has anyone seen issues on Cisco ISR / ISR G2 routers running 15.x code while doing NAT for large quantities of users (3000+) involving lock ups? This seems to be an ongoing issue for a customer. The symtom is present on 2811, 2911 and a 3945. The 3945 never spikes over 10% processor or memory utilization, yet still has these issues. The routers have been tested running 15.0(1)M5, 15.0(1)M7 and 15.1(4)M4 which all showed simular results. Other router side services are running such as NetFlow v9 to two destinations. Another interesting symtom, doing a "show ip nat translations" command will crash the router if executed at its peak usage period. NAT is to a single IP (sourced from outside interface), not a pool.
HOSTNAME#show mem alloc total
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...