http://www.siriuspackets.com Routing packets where the sun don't shine! Thu, 01 Oct 2009 17:21:01 +0000 http://backend.userland.com/rss092 en This is the best way you can practice and familiarize yourself with Cisco routers and IOS for people wanting to get started with Cisco products. I have used this tool in the past and found it to be very helpful. The intuitive graphics shows you the packet flow for the ... http://www.siriuspackets.com/2009/10/01/cisco-packet-tracer-51-download/ To be posted 07/31. The proper way to configure this! http://www.siriuspackets.com/2009/07/29/configuring-dhcp-snooping-on-a-catalyst-6500-ios/ There have been many posts on the Internet explaining how EIGRP gets its composite metric. I've been running around searching for information and it seems that there are NOT that many people who seem to post this info. Here it is, the real calculation method for EIGRP metrics. Everyone says EIGRP ... http://www.siriuspackets.com/2009/04/17/eigrp-formula-calculation-method-for-composite-metric/ Problem: So I was working on implementing WCCP redirection for networks to get TCP accelerated between two data centers and I ran into a problem. The problem was that subnets behind the core switches were not getting WCCP redirected into the WAAS units. So I wonder why? It's matching the redirect-list ... http://www.siriuspackets.com/2009/03/28/mpls-with-wccp-do-not-mix/ CME - CLI Config This is a sample CLI configuration for Call Manager Express (CME). Please make sure to setup all of the local functionality of the CME before trying to setup the SIP Trunks. When you are ready to setup the SIP trunks, the first thing you wll need to do is ... http://www.siriuspackets.com/2009/03/28/sip-cme-configuration/ In this post I demonstrate how to configure the Cisco Adaptive Security Appliance (ASA) to use an LDAP server for authentication of WebVPN users. The LDAP server in this example is Microsoft Active Directory. In this example Lightweight Directory Access Protocol (LDAP) authentication is configured for WebVPN users, but this ... http://www.siriuspackets.com/2009/03/28/asa-5500-ssl-vpn-ldap-authentication/ This took me about 8-12 hours to figure out (considering I don't really have voip experience), but I recently canceled one of my consulting contracts where I was using EasyVPN client on my home 2811 and terminated into one of my consulting client's Cisco VPNc3000 concentrator for Call Manager 4.3 ... http://www.siriuspackets.com/2009/03/22/call-manager-express-to-3rd-party-sip-provider-sample-configuration/ WCCPv1: ------------------------ 1. Only single router can participate in a cluster of WCCP-capable devices 2. Intercepts and redirects HTTP and HTTPS 3. Does not allow load balancing WCCPv2: ------------------------ 1. Supports multiple routers can redirect to clusters and devices, allows for load balancing. 2. Support for non HTTP and HTTPS protocols such as other TCP or UDP packets. 3. ... http://www.siriuspackets.com/2009/03/21/wccpv1-vs-wccpv2/ This option allows 6500/7600 to use hardware acceleration for WCCP packets in Layer 2. This method in theory allows you to utilize up to 3Gbps of traffic on a PFC2 card, perhaps even more with a PFC3B. The device (eg: WAE or ACNS) needs to have layer 2 adjacency with the ... http://www.siriuspackets.com/2009/03/21/wccp-accelerated-option/ OSPF packet types are different from OSPF LSA types. LSA's are represented by one of these packet types. Check out the diagram to get a better understanding for the different types of OSPF packet types. [caption id="attachment_96" align="alignnone" width="320" caption="OSPF Packet Types"][/caption] Step 1: Hello packet received from a neighbor router causes an OSPF ... http://www.siriuspackets.com/2009/03/21/ospf-lsa-packets/