Another short cisco certification review

Current cisco certification News

Understanding BGP Port Numbers

Wed, 06 Feb 2008 17:23:46 +0000
Guys,
I ran into a task in a lab to configure an ACL to allow BGP and the book has it configured like this:
Permit tcp host 150.1.5.5 eq bgp host 150.1.4.4
Permit tcp host 150.1.5.5 host 150.1.4.4 eq bgp
Is there a reason why it is configured like that instead of ‘Permit tcp host 150.1.5.5 eq bgp ...]




sh ppp multilink

dynamips training

Sat, 10 Nov 2007 12:28:25 +0000
I went back home by train yesterday from berlin and was able to do some labbing with dynamips. On my 6 hours journey i started with lab 3 from internetworkexpert workbook 3 v4.1. It took quite some time to setup everything to start. You have to change the interface types (FastEthernet to Ethernet or Serial0/0 ...]

BGP Time-Based Policy Routing

Fri, 25 Jan 2008 17:13:43 +0000
Sometimes people need to conditionally advertise routes into BGP table based on time of day. Say, we may want to adversite IGP prefix 150.1.1.0/24 with community 1:100 during daytime and with community 1:200 at the other time. Back in days, the procedure was easy - you had to create time based ACL, and use it ...]


How do I compute complex wildcard masks for access-lists?

Wed, 26 Dec 2007 20:27:08 +0000
Access-list address and wildcard pair calculations are based
around the AND and XOR logic gates.
AND: The output is high only when both inputs A and B are high.

A AND B
______________
| A | B | out |
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | ...]


Update on updates

Wed, 12 Mar 2008 20:17:54 +0000
You may have noticed a distinct lack of updating on this site recently. I have been continuing with my lab


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