Cisco 7201 (G2) Traffic Performance (High CPU Utilization)

> If the CPU load is high, then check to see what’s causing it. His sh proc c output snippet indicates that almost all his CPU usage is interrupts – on a software-based platform, that’s indicative of pps, whether directed to the box or through the box. Is this router on the Internet, or on… Lees verder Cisco 7201 (G2) Traffic Performance (High CPU Utilization)

Cisco 6500 QOS

By enabling ‘mls qos’ you’re splitting your already small buffer space on this platform into 4 pieces and using just one of them for normal traffic “mls qos” activates QoS, and that includes _ALL_ of the default QoS configs including automatic classify and remark, and all the default queues. This lets the interfaces use (almost) as… Lees verder Cisco 6500 QOS

SSID / resource usage

Is there a relation between the number of used SSID and used resources (system/network/…) ? http://www.revolutionwifi.net/2013/10/ssid-overhead-how-many-wi-fi-ssids-are.html  

Cisco ASA return traffic with explicit deny on outside interfac

I have an ASA running 8.4 in a pretty simple setup with 2 interfaces (inside/outside). I have to 2 ACLs where one is applied inbound on the inside, and one ACL applied inbound on the outside interface. The outside ACL has an explicit deny ip any any statement for logging purposes. I am wondering, does… Lees verder Cisco ASA return traffic with explicit deny on outside interfac

ostinato

ostinato Packet/Traffic Generator and Analyzer https://code.google.com/p/ostinato/

How to troubleshoot input queue drop continuously on Cisco7600?

> k1#sho int te1/4 > >   Last clearing of “show interface” counters 00:12:35 > >   Input queue: 0/200/69739/69739 (size/max/drops/flushes); Total > output > drops: 0 On this platform those drops could be for traffic forwarded to the CPU. What does the interface configuration look like? Is it a L3 interface (“no switchport”), or is it… Lees verder How to troubleshoot input queue drop continuously on Cisco7600?

Traffic Generators

opensource solutions, scapy will probably be able to do the job. > IMIX and other standard load tests.I’m using IPERF now, but this is > simply a load gen.  No IMIX etc Suggestions ?A little script with bwping (TOS, MTU) is not enough to try to make a ~~pseudo~~ RFC2544 test ? Sorry if it… Lees verder Traffic Generators

Cisco CoPP

Cisco CoPP Best practices Cisco CoPP Cat6k http://events.cisco.hu/2014/techtorial/doc/lavarga_v1.0.pdf Hi All, Thanks for all the valuable input! I wrote up a CoPPs policy, and deployed it in a non-limiting fasion and monitored for a while. Once happy we enabled the policers and its working fine, however the software counters are going up, and it’s not clear to… Lees verder Cisco CoPP