Re: OSPF summary address with Null 0 [7:73500]
Can you please give us the link to the CCIE power session. Cheers. Reimer, Fred wrote in message news:[EMAIL PROTECTED] From the CCIE Power Session: Unless a question says so, you are not permitted to use**: Static routes (of any kind) Default routes **Dynamic routes to null are permitted Floating statics are also allowed: ip route 2.2.2.0 255.255.255.0 1.1.1.2 240 * Uses a higher administrative distance so that dynamic protocols will take precedence * Use only if explicitly allowed in a test question * Make sure the dynamic route actually exists when DDR is not active HTH, Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: Shab Hanon [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 05, 2003 5:30 AM To: [EMAIL PROTECTED] Subject: OSPF summary address with Null 0 [7:73500] Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: OSPF summary address with Null 0 [7:73500]
Can any one tell us how to block a default route? it is easy to block other routes by using ACL with distribution-list But how to remove the default route which is being advertised by default-information originate always command. Reimer, Fred wrote in message news:[EMAIL PROTECTED] From the CCIE Power Session: Unless a question says so, you are not permitted to use**: Static routes (of any kind) Default routes **Dynamic routes to null are permitted Floating statics are also allowed: ip route 2.2.2.0 255.255.255.0 1.1.1.2 240 * Uses a higher administrative distance so that dynamic protocols will take precedence * Use only if explicitly allowed in a test question * Make sure the dynamic route actually exists when DDR is not active HTH, Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: Shab Hanon [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 05, 2003 5:30 AM To: [EMAIL PROTECTED] Subject: OSPF summary address with Null 0 [7:73500] Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: OSPF summary address with Null 0 [7:73500]
It is easy to block other routes by using ACL with distribution-list FROM appearing in the routing table in other word you can remove them from the routing table :) No way to remove LSA from the ospf database. Soon I will try no default-information originate always :) Cheers, Shab. Zsombor Papp wrote in message news:[EMAIL PROTECTED] Shab Hanon wrote: Can any one tell us how to block a default route? it is easy to block other routes by using ACL with distribution-list But how to remove the default route which is being advertised by default-information originate always command. 'no default-information originate always' :) Once it is in the OSPF database, you can't take it out. This is the same for other routes as well, btw, so I am not quite sure I understand why you say it's easy to block other routes. Thanks, Zsombor **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=73625t=73500 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: OSPF summary address with Null 0 [7:73500]
OSPF installs that summary route pointing to Null0 automatically. Thanks, Zsombor Shab Hanon wrote: Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! . While we need to have a static route to Null 0 with address summarization. Page 548 Routing TCP/IP Vol. 1 The catch J What we do? What is the best? Any idea??? Cheers, Shab. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=73519t=73500 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: OSPF summary address with Null 0 [7:73500]
Good question. Null0 will only be used if it can't find a particular address. It's used to prevent routing loops essentially. Shab Hanon wrote in message news:[EMAIL PROTECTED] Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: OSPF summary address with Null 0 [7:73500]
Shab Hanon wrote: Can any one tell us how to block a default route? it is easy to block other routes by using ACL with distribution-list But how to remove the default route which is being advertised by default-information originate always command. 'no default-information originate always' :) Once it is in the OSPF database, you can't take it out. This is the same for other routes as well, btw, so I am not quite sure I understand why you say it's easy to block other routes. Thanks, Zsombor Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=73556t=73500 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: OSPF summary address with Null 0 [7:73500]
From the CCIE Power Session: Unless a question says so, you are not permitted to use**: Static routes (of any kind) Default routes **Dynamic routes to null are permitted Floating statics are also allowed: ip route 2.2.2.0 255.255.255.0 1.1.1.2 240 * Uses a higher administrative distance so that dynamic protocols will take precedence * Use only if explicitly allowed in a test question * Make sure the dynamic route actually exists when DDR is not active HTH, Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: Shab Hanon [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 05, 2003 5:30 AM To: [EMAIL PROTECTED] Subject: OSPF summary address with Null 0 [7:73500] Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! . While we need to have a static route to Null 0 with address summarization. Page 548 Routing TCP/IP Vol. 1 The catch J What we do? What is the best? Any idea??? Cheers, Shab. **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=73507t=73500 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: OSPF summary address with Null 0 [7:73500]
As far as I know, there isn't one. I consider it fair use to quote a small section of the handouts they provided, but it was a separate charge to attend at Networkers, so I don't believe it would be ethical to just type the whole thing (and I don't really feel like typing the whole thing ;-) If you have a specific question I'll try to answer it. Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: Shab Hanon [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 05, 2003 8:55 AM To: [EMAIL PROTECTED] Subject: Re: OSPF summary address with Null 0 [7:73500] Can you please give us the link to the CCIE power session. Cheers. Reimer, Fred wrote in message news:[EMAIL PROTECTED] From the CCIE Power Session: Unless a question says so, you are not permitted to use**: Static routes (of any kind) Default routes **Dynamic routes to null are permitted Floating statics are also allowed: ip route 2.2.2.0 255.255.255.0 1.1.1.2 240 * Uses a higher administrative distance so that dynamic protocols will take precedence * Use only if explicitly allowed in a test question * Make sure the dynamic route actually exists when DDR is not active HTH, Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: Shab Hanon [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 05, 2003 5:30 AM To: [EMAIL PROTECTED] Subject: OSPF summary address with Null 0 [7:73500] Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=73530t=73500 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: OSPF summary address with Null 0 [7:73500]
under ospf no discard route internal (does not install the Null0 route in routing table) no discard route external (used whey you use the summary address command) Ronnie Shab Hanon wrote in message news:[EMAIL PROTECTED] Hi everybody The case .. OSPF summary address with Null 0 In all the case studies for CCIE R S we told don't use static routes! **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
