Ok, I know I said I was done with the IOS XR stuff, but just had to share this.
Cisco has posted some Videos on YouTube, they are below for your enjoyment.
Also, if you are looking for an IOS XR book – here is a link to the one on Amazon.
One last IOS XR post and then it will be time to post the IOS XR workbook.
Ok, let’s quickly look at loading a configuration from the disk and overwriting an existing configuration.
I have copied a config to disk0a: called newconfig.txt. What I want to do is install this configuration as the running config on the router.
1626 -rwx 204 Wed Oct 17 01:21:30 2012 newconfig.txt
So to start, lets delete the existing configuration
RP/0/RSP0/CPU0:R1(config)#commit replace
Wed Oct 17 01:21:43.406 UTC
This commit will replace or remove the entire running configuration. This
operation can be service affecting.
Do you wish to proceed? [no]: y
RP/0/RSP0/CPU0:ios(config)#
RP/0/RSP0/CPU0:ios(config)#exit
Ok, so now we are at an unconfigured device. Now we can load the config on the disk to the running config.
RP/0/RSP0/CPU0:ios(config)#load disk0a:/newconfig.txt
Loading.
204 bytes parsed in 1 sec (203)bytes/sec
Ok, now that BGP has been covered, lets talk about filtering routes received from our neighbor. Here I have created some additional Loopbacks on R2 that are being advertised to R1:
RP/0/7/CPU0:R1#sh ip route bgp
Fri Mar 30 13:13:36.797 UTC
B 200.100.200.100/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.200/32 [20/0] via 2.2.2.2, 13:45:00
B 200.200.200.203/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.204/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.205/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.206/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.207/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.208/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.209/32 [20/0] via 2.2.2.2, 00:00:42
B 200.200.200.210/32 [20/0] via 2.2.2.2, 00:00:42
RP/0/7/CPU0:R1#
As you can see, we are getting a bunch of 200.200.200.x/32 routes now as well as a 200.100.200.100/32 route. For this exercise, lets filter our all the 200.200.200.x routes we are receiving from our neighbor.
Ok, lets create a prefix-set for the loopback we want to permit:
RP/0/7/CPU0:R1(config)#conf t
RP/0/7/CPU0:R1(config)#prefix-set R2Loopbacks
