# Cisco Locator ID Separation Protocol (LISP)

**URL:** <https://forum.networklessons.com/t/cisco-locator-id-separation-protocol-lisp/9581>\
**Category:** Lessons Discussion\
**Created:** [January 23, 2020, 11:58am UTC](https://forum.networklessons.com/t/cisco-locator-id-separation-protocol-lisp/9581 "2020-01-23T11:58:39Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![ReneMolenaar](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/renemolenaar/32/488_2.png) [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)\
**Post date:** [January 28, 2020, 8:22am UTC](https://forum.networklessons.com/t/cisco-locator-id-separation-protocol-lisp/9581/3 "2020-01-28T08:22:06Z")

</div>

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:

[![](https://networklessons.com/wp-content/uploads/2020/01/lisp-data-path-encapsulation.png) ](https://networklessons.com/wp-content/uploads/2020/01/lisp-data-path-encapsulation.png)

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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