This page was exported from Free Cisco Training & Resources - Certification Exam Preparation [ https://www.ciscobibles.com ] Export date:Thu Mar 28 8:39:53 2024 / +0000 GMT ___________________________________________________ Title: CCNP BSCI Notes - Scalable EIGRP --------------------------------------------------- Configuring EIGRP Enabling EIGRP:        Adding a network to EIGRP:       All interfaces belonging to the specified network will become EIGRP capable and advertised via EIGRP. EIGRP will summarize to classful boundaries by default. An interface can be set to ''passive'' to prevent advertisement:        If an interface is included in the network configuration but set to passive, it will still be included in EIGRP advertisements. If an interface is not included in an EIGRP network, it will not be advertised in EIGRP. Summarization Summarization is key to preventing looping route queries (which leads to SIA condition). Disable automatic summarization to classful addresses:        Configure manual summarization on an interface:        Stub Routers Stub routers participate minimally in EIGRP, which reduces utilization of memory and CPU on the router. Often used in lieu of static routes in a hub-spoke topology to provide a standard configuration for all spoke routers.                 receive-only - Prevents the router from advertising any routes          connected - Permits advertisement of connected networks (default)          static - Permits redistribution of static routes          summary - Advertises summary routes (default) Load Balancing EIGRP automatically load balances across equal-cost links. Unequal-cost load balancing is enabled by specifying a variance. Feasible successors with a feasible distance less than (best path FD * variance) will be proportionally utilized.        Variance can be between 1 and 128; default is 1 (equal-cost only). EIGRP Tuning EIGRP timers do not have to match for two routers to form an adjacency. Default hello timer:          High-bandwidth links (>= T1): 5 seconds          Low-bandwidth links (< T1): 60 seconds Hello timers are modified per interface:        Default hold timer = 3 * Reconfiguring the hold timer is done in seconds, not as a multiplier:          Authentication Authentication types:          Plain-text password (insecure)          MD5 hash Configuring MD5 authentication on an interface:         Bandwidth Manipulation Bandwidth of an interface can be administratively configured:         The bandwidth setting will not affect the actual interface speed, only the value used in metric calculation. This is useful for serial interfaces which connect to a DSU operating at a slower speed. EIGRP assumes all virtual circuits on an interface receive an equal share of the total bandwidth. By default, EIGRP will use no more than 50% of an interface's bandwidth. This can be adjusted as such:          Verifying EIGRP Operation Monitoring         show ip eigrp neighbors         show ip eigrp topology         show ip eigrp traffic         show ip eigrp interfaces         show ip route eigrp Debugging         debug eigrp packet         debug ip eigrp neighbors         debug ip eigrp         debug ip eigrp summary --------------------------------------------------- Images: http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image002_thumb8.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image004_thumb7.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image006_thumb7.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image008_thumb7.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image010_thumb6.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image012_thumb4.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image014_thumb4.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image016_thumb4.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image018_thumb3.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image020_thumb3.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image022_thumb2.gif http://www.ciscobibles.com/wp-content/uploads/2009/11/clip_image024_thumb2.gif --------------------------------------------------- --------------------------------------------------- Post date: 2009-11-19 15:21:17 Post date GMT: 2009-11-19 07:21:17 Post modified date: 2010-07-23 00:31:44 Post modified date GMT: 2010-07-22 16:31:44 ____________________________________________________________________________________________ Export of Post and Page as text file has been powered by [ Universal Post Manager ] plugin from www.gconverters.com