Problem Description

Product Name:   NE40E-X16

Version:    V600R007

【Problem Summary】 :  Customer required VRRP on /30 IP Pool.

【Problem Details】:  Customer required VRRP on /30 IP Pool (Point to Point IP).

Handling Process

As in XXX customer we have VRRP protection scheme in which Services are running normal during single point of link down on /29 IP Pool. First IP as Virtual IP, second, third IP on both routers and last IP on peer device.

 Now customer want to have this reduandancy achieved with /30 IP subnet,

I proposed to them, they can use /30 IP pool for VRRP, keeping same IP Pool on both plane of router. Tested solution succesfully on eNSP.

Root Cause

First IP on interface and seconf IP on Peer device for VRRP configuration on /30 IP Pool.

Solution

VRRP configured on /30 IP Pool, having first IP on interface and second IP on Peer device with same VRID.

 

ROUTER 1

#

interface Eth-Trunk1

 portswitch

 description Router1 TO Router2

#

interface Eth-Trunk1.1

 vlan-type dot1q 10

 description Router2 TO Router2

 ip address 10.87.137.1 255.255.255.252

#

interface Eth-Trunk1.2

 vlan-type dot1q 2

 ip address 10.87.137.10 255.255.255.248

 vrrp vrid 100 virtual-ip 10.87.137.9

 admin-vrrp vrid 100 ignore-if-down

 vrrp vrid 100 priority 105

 vrrp vrid 100 preempt-mode timer delay 60

 vrrp vrid 100 track interface GigabitEthernet0/0/2 reduced 30

#

interface GigabitEthernet0/0/0

 eth-trunk 1

#

interface GigabitEthernet0/0/2

 ip address 10.1.1.1 255.255.255.252

 vrrp vrid 1 virtual-ip 10.1.1.1

 admin-vrrp vrid 1 ignore-if-down

 direct-route track vrrp vrid 1 degrade-cost 100

#

 

<Router2>

#

interface Eth-Trunk1

 portswitch

 description Router1 TO Router2

#

interface Eth-Trunk1.1

 vlan-type dot1q 10

 description Router2 TO Router2

 ip address 10.87.137.2 255.255.255.252

#

interface Eth-Trunk1.2

 vlan-type dot1q 2

 ip address 10.87.137.11 255.255.255.248

 vrrp vrid 100 virtual-ip 10.87.137.9

 admin-vrrp vrid 100 ignore-if-down

#

interface GigabitEthernet0/0/0

 eth-trunk 1

#

interface GigabitEthernet0/0/2

 ip address 10.1.1.1 255.255.255.252

 vrrp vrid 1 virtual-ip 10.1.1.1

 vrrp vrid 1 track admin-vrrp interface Eth-Trunk1.2 vrid 100

 direct-route track vrrp vrid 1 degrade-cost 100

#

 

SWITCH

interface GigabitEthernet0/0/1

 port link-type access

 port default vlan 10

#

interface GigabitEthernet0/0/2

 port link-type access

 port default vlan 10

#

interface GigabitEthernet0/0/3

 port link-type access

 port default vlan 10

#

 

 Suggestions and Summary

 

We can use /30 IP Pool for VRRP, so IP Pool can be saved.

Since router does not need broadcast hence you can use all 4 IP from /30 this is supported in Cisco and good to know that VRP also support it :)

Yes @FaisalUsuf .. This is working solution . 

Shared with all of you for reference.

What version of software and hardware?

Dear b80046875,

You are offering a solution, you are a very good learner.

 

Dear m7g,

Versions are 

Product Name:   NE40E-X16

Version:    V600R007

Thanks dear :) 

This is good solution to save IP pools.