Cisco Locator ID Separation Protocol (LISP)

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3

Hello Evan,

I will add a walkthrough of the configuration soon. I didn’t do it right away because the CCNP ENCOR exam only covers LISP in theory.

If you want to take a look at a working lab, I have the configs of the topology that I used in this explanation:

Here are the configs:

hostname H1
!
no ip routing
!
interface GigabitEthernet0/1
 ip address 192.168.1.101 255.255.255.0
!
ip default-gateway 192.168.1.254
!
end

hostname H2
!
no ip routing
!
interface GigabitEthernet0/1
 ip address 192.168.2.102 255.255.255.0
!
ip default-gateway 192.168.2.254
!
end

hostname XTR1
!
interface LISP0
!
interface GigabitEthernet0/1
 ip address 192.168.123.1 255.255.255.0
!
interface GigabitEthernet0/2
 ip address 192.168.1.254 255.255.255.0
!
router lisp
 locator-set SITE1
  192.168.123.1 priority 10 weight 10
  exit
 !
 database-mapping 192.168.1.0/24 locator-set SITE1
 ipv4 itr map-resolver 192.168.123.3
 ipv4 itr
 ipv4 etr map-server 192.168.123.3 key MY_SECRET
 ipv4 etr
 exit
!
end
hostname XTR2
!
interface LISP0
!
interface GigabitEthernet0/1
 ip address 192.168.123.2 255.255.255.0
!
interface GigabitEthernet0/2
 ip address 192.168.2.254 255.255.255.0
!
router lisp
 locator-set SITE2
  192.168.123.2 priority 10 weight 10
  exit
 !
 database-mapping 192.168.2.0/24 locator-set SITE2
 ipv4 itr map-resolver 192.168.123.3
 ipv4 itr
 ipv4 etr map-server 192.168.123.3 key MY_SECRET
 ipv4 etr
 exit
!
end
hostname MR-MS
!
interface GigabitEthernet0/1
 ip address 192.168.123.3 255.255.255.0
!
router lisp
 site SITE1
  authentication-key MY_SECRET
  eid-prefix 192.168.1.0/24
  exit
 !
 site SITE2
  authentication-key MY_SECRET
  eid-prefix 192.168.2.0/24
  exit
 !
 ipv4 map-server
 ipv4 map-resolver
 exit
!
end

Some commands you might want to try:

  • show ip lisp
  • show lisp site
  • show ip lisp map-cache
  • debug lisp control-plane all

Once I work on the CCIE Enterprise material, I’ll create a full walkthrough for this.

Rene

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