Routing

Hi, 

I have a VRRP configured with a /28 subnet (1.1.1.0/28) and I would like to route another /28 (1.1.1.80/28) so that I'll be able to still route my traffic through the VRRP address 1.1.1.3/28 but also accept and send traffic using the newly allocated subnet 1.1.1.80/28.

Any ideas how to go round this configuration?

The main objective is to retain 1.1.1.0/28 but still be able to increase the IP space allocated. 

Thanks in advance for your tips. 

Hi,

Can you please provide the config snapshot?

Regards

Surya

Hi Surya, 

At the moment I only have a default VRRP configuration as per below;

set interfaces ae0 unit 0 family bridge vlan-id-list 1
set interfaces ae1 unit 0 family bridge vlan-id-list 1
set interfaces irb unit 1 description vl1
set interfaces irb unit 1 family inet address 1.1.1.1/28 vrrp-group 22 virtual-address 1.1.1.3
set interfaces irb unit 1 family inet address 1.1.1.1/28 vrrp-group 22 priority 200
set interfaces irb unit 1 family inet address 1.1.1.1/28 vrrp-group 22 fast-interval 200
set interfaces irb unit 1 family inet address 1.1.1.1/28 vrrp-group 22 accept-data
set interfaces irb unit 1 family inet address 1.1.1.1/28 vrrp-group 22 authentication-type md5
set interfaces irb unit 1 family inet address 1.1.1.1/28 vrrp-group 22 track interface ae0 priority-cost 200
set bridge-domains vlan-1 domain-type bridge
set bridge-domains vlan-1 vlan-id 1
set bridge-domains vlan-1 routing-interface irb.1

Obviously I have the same config over a secondary MX router.

Hello,

If You are asking whether gateway address 1.1.1.3 can be used by hosts residing on subnet 1.1.1.80/28, the answer is no. 1.1.1.3 is not within 1.1.1.80/28 subnet, period.

You have to change either the additional subnet, or its mask to achieve what You are asking for.

You could play with proxy ARP on irb.1 but proxy ARP is full of non-trivial pitfalls, see my other post.

HTH

Thanks

Alex

Thanks for that aarseniev - I'll have a look at the proxy arp tip; seen this kind of config working on another vendor gear and I would like to mimic the end result although its not something normal or easy.