It is required only if you are explicitly asked to do it, otherwise no. Please note that in 12.4T, MD5 RIP authentication fails inexplicably most of the time.
-- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: [email protected] Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sun, Apr 17, 2011 at 06:35, Samir Idris <[email protected]> wrote: > Hi, > > A quick question: > > When configuring RIP authentication, is it necessary to specify the send and > accept lifetime? I think not. Am I right? > > Key-chain R2R4: > key 1 -- text "ipexpert_R2toR4" > accept lifetime (always valid) - (always valid) [valid now] > send lifetime (always valid) - (always valid) [valid now] > > > R2(config-subif)#do sh ip proto > Routing Protocol is "rip" > Outgoing update filter list for all interfaces is not set > Incoming update filter list for all interfaces is not set > Incoming routes will have 5 added to metric if on list R8 > Sending updates every 30 seconds, next due in 19 seconds > Invalid after 180 seconds, hold down 0, flushed after 240 > Redistributing: rip > Default version control: send version 2, receive version 2 > Interface Send Recv Triggered RIP Key-chain > FastEthernet0/0 2 2 > Serial0/1.24 2 2 R2R4 > Serial0/1.25 2 2 > Serial0/1.26 2 2 > Automatic network summarization is not in effect > Maximum path: 4 > Routing for Networks: > 0.0.0.0 > Passive Interface(s): > Serial0/0 > FastEthernet0/1 > Serial0/1 > Serial0/2 > Serial0/3 > FastEthernet1/0 > FastEthernet1/1 > FastEthernet1/2 > FastEthernet1/3 > FastEthernet1/4 > FastEthernet1/5 > FastEthernet1/6 > FastEthernet1/7 > FastEthernet1/8 > FastEthernet1/9 > FastEthernet1/10 > FastEthernet1/11 > Passive Interface(s): > FastEthernet1/12 > FastEthernet1/13 > FastEthernet1/14 > FastEthernet1/15 > Vlan1 > VoIP-Null0 > Routing Information Sources: > Gateway Distance Last Update > 150.100.100.6 120 00:00:24 > 150.100.100.5 120 00:00:01 > 150.100.24.4 120 00:01:54 > 150.100.12.1 120 00:00:12 > Distance: (default is 120) > > Apr 17 15:33:49.891: RIP: ignored v2 packet from 150.100.24.4 (invalid > authentication) > > Regards, > Samir Idris. > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
