To Passive or Not to Passive [7:24771]
Dear all, Before I take the leap into the lab (2 weeks to go now), I have a question which has dogged me for a while now. Scenario below. Router 1 has the following interfaces, Lo0, Eth0/0, S0/0, S0/1 and say Fast0/1. Router 2 has the following interfaces Lo0, Lo1, Eth 0/1, S0/0. Between Router 1 (s0/0) and Router 2 (s0/0) we are running say OSPF. On router 1 (e0/0 and s0/1) we are running RIP. On Router 2 (e0/1 and lo1) we are also running Rip. Router 1 (lo0, s0/1) and Router 2 (lo0) are running Eigrp. Now for the questions 1. On router 1 OSPF process is running Q: should I put lo0,e0/0, fast0/1 and s0/1 as passive interface ??? This worries me quite a bit as the argument of if you dont put the network command under ospf then ospf will not run on that interface...BUT I have been told that you should ALWAYS put every in use interface into passive if it is not being used under the routing process. 2. This is not a question but a sanity check that for EIGRP and RIP then the norm rules of passive interfaces apply. Thanks for anyones help in clearing this annoying matter up. Robert McCallum Ext 730 3448 DDI : 01415663448 Mobile : 07818002241 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=24771t=24771 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
To Passive or Not to Passive
[ The following text is in the iso-8859-1 character set. ] [ Your display is set for the US-ASCII character set. ] [ Some characters may be displayed incorrectly. ] Dear all, Before I take the leap into the lab (2 weeks to go now), I have a question which has dogged me for a while now. Scenario below. Router 1 has the following interfaces, Lo0, Eth0/0, S0/0, S0/1 and say Fast0/1. Router 2 has the following interfaces Lo0, Lo1, Eth 0/1, S0/0. Between Router 1 (s0/0) and Router 2 (s0/0) we are running say OSPF. On router 1 (e0/0 and s0/1) we are running RIP. On Router 2 (e0/1 and lo1) we are also running Rip. Router 1 (lo0, s0/1) and Router 2 (lo0) are running Eigrp. Now for the questions 1. On router 1 OSPF process is running Q: should I put lo0,e0/0, fast0/1 and s0/1 as passive interface ??? This worries me quite a bit as the argument of if you dont put the network command under ospf then ospf will not run on that interface...BUT I have been told that you should ALWAYS put every in use interface into passive if it is not being used under the routing process. 2. This is not a question but a sanity check that for EIGRP and RIP then the norm rules of passive interfaces apply. Thanks for anyones help in clearing this annoying matter up. Robert McCallum Ext 730 3448 DDI : 01415663448 Mobile : 07818002241
Re: To Passive or Not to Passive [7:24771]
In regards to Q number one. I think it would be much better not to specify passive interface under OSPF as long as your network statement does not include the IP of the interface in question. The reason for that, at least in my head, is that if I were a proctor I might think you don't understand how OSPF works. For question 2, passive should be a norm on interfaces you don't want to form neighboorship or sending routing updates. Make sure you understand that passive works differenty for RIP than for EIGRP. McCallum, Robert [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Dear all, Before I take the leap into the lab (2 weeks to go now), I have a question which has dogged me for a while now. Scenario below. Router 1 has the following interfaces, Lo0, Eth0/0, S0/0, S0/1 and say Fast0/1. Router 2 has the following interfaces Lo0, Lo1, Eth 0/1, S0/0. Between Router 1 (s0/0) and Router 2 (s0/0) we are running say OSPF. On router 1 (e0/0 and s0/1) we are running RIP. On Router 2 (e0/1 and lo1) we are also running Rip. Router 1 (lo0, s0/1) and Router 2 (lo0) are running Eigrp. Now for the questions 1. On router 1 OSPF process is running Q: should I put lo0,e0/0, fast0/1 and s0/1 as passive interface ??? This worries me quite a bit as the argument of if you dont put the network command under ospf then ospf will not run on that interface...BUT I have been told that you should ALWAYS put every in use interface into passive if it is not being used under the routing process. 2. This is not a question but a sanity check that for EIGRP and RIP then the norm rules of passive interfaces apply. Thanks for anyones help in clearing this annoying matter up. Robert McCallum Ext 730 3448 DDI : 01415663448 Mobile : 07818002241 Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=24771t=24771 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: To Passive or Not to Passive [7:24902]
At 10:51 AM 10/31/01 +, McCallum, Robert wrote: Dear all, Before I take the leap into the lab (2 weeks to go now), I have a question which has dogged me for a while now. Scenario below. [snip] 1. On router 1 OSPF process is running Q: should I put lo0,e0/0, fast0/1 and s0/1 as passive interface ??? This worries me quite a bit as the argument of if you dont put the network command under ospf then ospf will not run on that interface...BUT I have been told that you should ALWAYS put every in use interface into passive if it is not being used under the routing process. 2. This is not a question but a sanity check that for EIGRP and RIP then the norm rules of passive interfaces apply. For EIGRP (Pre 12.x where you can use the wildcard mask), you should passive out any interfaces you're not running EIGRP/IGRP/RIP. But in OSPF, you can specify which interfaces should run OSPF. So I would not passive them out. hsb Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=24902t=24902 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
