Cisco networking tutorials
Cisco Hot Standby Router Protocol
Contributed by shadowman on December 24, 2007 under Cisco networkingTwo routers are connected to the network and the two default gateways do not provide a completely reliable path in the event of an outage.
Although the ITA has some newer IP hosts that support dynamic router discovery with the ICMP Router Discovery Protocol (IRDP), it mostly has a large class of legacy host implementations that do not. These hosts are unable to find a new router when their default gateway becomes unavailable.The ITA is also concerned with IRDP’s administrative and processing overhead, security issues, and lack of support on the legacy platforms.Configuring HSRP on the two routers provides a fast fail-over mechanism that is transparent to the users. This allows hosts on the LAN segment to maintain access to the Web router if a single point of
failure occurs.
Comments Tutorial: Standard ACL (Access Control List) Basics
Contributed by aaronm on June 18, 2007 under Cisco routerThis is a BASIC explanation of Standard ACL’s that SHOULD be fairly easy to understand and span the spectrum of most Cisco routers.
CommentsCallmanager Express transfer direct to Unity express voicemail
Contributed by abanks on April 17, 2007 under Cisco call managerTransfer a caller on a Cisco CME (CallManager Express) to a voicemail box on a CUE (Cisco Unity Express) system.
CommentsPPTP on Cisco ASA or PIX 6.3 or later code
Contributed by abanks on March 19, 2007 under Cisco firewallIn PIX 6.3 and later, support for PPTP through the PIX has been added.
CommentsCisco IOS DST Daylight Savings Time Workaround
Contributed by abanks on March 13, 2007 under Cisco routerDaylights Savings Time workaround for Cisco IOS devices. Of course, updating the IOS to a DST-corrected version will eliminate the need for this fix, but…
CommentsCisco PIX Logging: Debugging to Emergency
Contributed by aaronm on February 9, 2007 under Cisco firewallThis article is an outline of how to set up logging on your PIX, viewable to a syslog or through the show log statement. This information is targeted toward the more recent versions of PIX IOS, the older versions run along the same concept but have some different commands.
CommentsThe dark secrets of loopback addresses
Contributed by aaronm on January 22, 2007 under Cisco networkingJust some info on loopback virtual interfaces and their uses.
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