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For questions about Virtual Router Redundancy Protocol (VRRP), a standards based First Hop Redundancy Protocol (FHRP) defined in RFC 2338.

4
votes
1answer
57 views

Is it bad practice to use a Virtual Router for NTP-Clustering?

I'm trying to find information on whether it is possible to enable an NTP cluster containing multiple routers, that are configured with VRRP to share the same address. I am aware that with many ...
4
votes
3answers
105 views

How to prevent IP conflict when using VRRP

We are currently using VSRP (Layer2/3) where we have a single IP as the gateway per VLAN. We are considering moving to VRRP (Layer3) which requires 3 IPs, 1 virtual and 2 real ones. This means that ...
1
vote
1answer
246 views

Does VRRP or HSRP work with 2 different upstream ISPs?

We setup two Cisco ASRs as edge routers, each with a connection to a unique upstream ISP. Both routers are advertising the same IPv4 /24 prefix to their ISP via BGP, and both are connected to the same ...
1
vote
1answer
67 views

Breaking a stack switches (with SVIs as gateway) - using HSRP

I have a stack of 2x 3850 L3 Cisco switches. This stack has multiple SVIs created for several VLANs and is use mainly for distribution (inter-vlan routing). The problem with the stack is that I can't ...
0
votes
1answer
291 views

HSRP vs VRRP interface tracking

Was reading a Cisco presentation and there was that VRRP does not have a native interface tracking mechanism but it does have the ability to track objects. Such objects include also uplink statuses of ...
2
votes
2answers
528 views

VRRP vs HSRP for load sharing

Do both VRRP and HSRP support load sharing across more than one virtual routers based on the grop number ? In using VLAN's does the group number (in load balancing) will remain same in case of both ...
2
votes
1answer
371 views

Best way to setup VRRP if a router fails

I'm doing my VRRP networking lab. My understanding is if the Master failed then Backup will take over. In this scenarios, I have two layer 3 SW are connected together over LACP, and these two layer 3 ...
6
votes
1answer
209 views

Juniper EX4600: multicast not working in vlan default. [closed]

I have a Juniper EX4600 switch which I'm using for host connectivity (obviously). Now I need to set up a VRRP/CARP between two hosts that are in the same vlan, and it's the default one. Surprisingly, ...
1
vote
1answer
99 views

VRRP or Carp in Cisco 1900 Series

I'm planning to set up a dynamic route between pfSense and Cisco 1900 series. First, I want to set up hardware redundancy. In pfSense, I'm using CARP and everything works. My question is: Does the ...
2
votes
1answer
124 views

Why does a layer 3 hop use vrrp secondary on nexus 6001

I have a nexus N5K-C5672UP as core layer 3 for our VLAN's. VLAN 601 on core 2 is secondary vrrp: core 02: core02# show vrrp Interface VR IpVersion Pri Time Pre State VR IP addr ---------------...
1
vote
1answer
382 views

Possible reasons for both VRRP and HSRP on same router

I'm reviewing the configuration of a pair of pair routers. Each pair of routers has a satellite link between them (which is also redundant). They are in use - One pair has HSRP configured for all ...
0
votes
0answers
238 views

VRRP on DHCP client interface

Regarding IP address owner in VRRP. I have a dhcp client interface on a router on which VRRP is enabled. I configured a VR with virtual ip address as address assigned by DHCP server. Should the ...
2
votes
1answer
104 views

link redundancy

In a scenario, there are three devices R_A, R_B, R_C and connected as shown in diagram, How can implement that Link 1 and Link 2 work in active and standby mode i.e. Link 2 will be active if Link 1 ...
1
vote
1answer
213 views

VRRP VRID configuration for IPv6

Can we use same VRID (VRRP instance) for both IPv4 and IPv6 virtual router in VRRP or VRRP-E? In a layer-3 router, we have requirement to configure interface VE with both IPv4 and IPv6 gateways with ...
0
votes
2answers
312 views

What criteria do routers use to sense a WAN outage when using VRRP?

Does anyone know what internal criteria various routers use to sense when their WAN connection has gone down when configured for VRRP, in order to then decide to switch over from the master to the ...
1
vote
1answer
615 views

router on a stick and VRRP on the same router and full redundancy possible?

The routers on a stick are running VRRP on g0/0.10, g0/0.20 and g0/0.30. On switches, ports fa0/1-8 are on VLAN 10, fa0/23 and fa0/24 are configured as trunk port, with allowed VLANs 10, 20 and 30. ...
2
votes
2answers
1k views

MCLag active-active and VRRP

I have a pair of Juniper routers each one having drops from ISP. We advertise same IP blocks from both the routers on WAN interface. Now on the Lan side, we have pair of HP core switch running IRF ...
0
votes
1answer
184 views

Dell PowerConnect Firmware Update / Kemp VRRP

We just ran into the same problem outlined in this post: KEMP load balancers using UCARP (VRRP) - multicast MAC address not being picked up The only work-around that I was able to do was to disable ...
1
vote
1answer
2k views

How to setup VRRP with two routers and a single uplink (Internet connection)

I am wondering if the following scenario is possible to setup VRRP using two routers (and forgetting about network redundancy upstream or redundancy on the switch): Scenario: Data center provides 1 ...
0
votes
1answer
394 views

VRRP dual ISP setup

I have a project which I'm struggling with and wondered if someone can offer some advise on the best way to achieve my goal (I'm new to Juniper). At the moment I have 2 juniper SRX240s, one connected ...
3
votes
1answer
1k views

VRRP Sharing Master Router's IP

This set of question stems from a part of the answer to this question: What are the differences between VRRP and HSRP? With HSRP, each interface must have an IP address that is separate from the ...
2
votes
1answer
3k views

OSPF and VRRP network advertisements

How will VRRP and OSPF interact in the following scenario? Where the OSPF area is comprised of the Local and Remote L3 Switches. Remote Network 3.3.3.0 is advertised to Remote Switch 1 and 2 using ...
2
votes
1answer
477 views

ISP HA using GLBP vs BGP

I have a tech startup environment where I'm replacing consumer-grade routers with enterprise-grade. Now, they are asking if we can have dual ISPs to minimize downtime and any disruption. I have: ...
0
votes
1answer
1k views

HSRP and VRRP both routers active

I have two routers connected to a single switch and both have internet connections. I have configured HSRP and VRRP as follows, This is a test bench I'm using so that's why I'm using both. The HSRP is ...
0
votes
2answers
562 views

Is Fortigate implementation of VRRP RFC compliant?

By looking at RFC 3768, section 5.3.9 seems to indicate that indeed you should be able to configure more than one virtual IP in a single instance: 5.3.9. IP Address(es) One or more IP addresses ...
1
vote
1answer
323 views

VRRP Switch-back-delay limit according to standards?

I was working with VRRP on a small setup. I came across command switch-back-delay. According to us we can set MIN and MAX limit for switch-back-delay by changing the code in our program, but I wanted ...
2
votes
1answer
859 views

High Availability on Routers - HSRP, VRRP, GLBP

I have two MLS Connected to a Layer 2 Switch, Behind Layer 2 Switch there are some 5 hosts are there. MLS - A - Active Router IP Add - 192.168.1.10 MAC Add - 0000.aaaa.aaaa Priority - 200 VLAN 50 ...
8
votes
1answer
3k views

How to run redundant BGP via Quagga on /30 netblock?

My new BGP upstream has allocated a IPv4 /30 netblock as the glue block for connecting our routers. I however want to run two routers, and failover between them. If the netblock was larger (/29), I ...
5
votes
2answers
1k views

In and Outbound Dual VRRP connections

I'm trying to setup a redundant route link for our internal network using brocade layer 3 switches. I have setup up VRRP on both the green/blue and red/black networks. The reason for doing this is to ...
7
votes
2answers
4k views

KEMP load balancers using UCARP (VRRP) - multicast MAC address not being picked up

Alright - been battling this for at least 20 hours consecutive.. Sorry if this seems like a long rant, or a blog post, but I'm getting to the point of exhaustion. So, here's the deal. We're using ...
8
votes
4answers
4k views

PIM-SM multicast and HSRP/VRRP

I need to set up a PC to listen in on a multicast (PIM-SM) data feed. The multicast sources and (anycast) Rendezvous point are behind a "HSRP/VRRP address" on the other side of a WAN link. (The ...
9
votes
2answers
3k views

VRRP and VRRP-Extended

Is VRRP-E a completely separate standard than VRRP or does it just add on features to the VRRP standard? What are some major differences between VRRP and VRRP-E?
16
votes
7answers
78k views

What are the differences between VRRP and HSRP?

Are there any significant differences between VRRP and HSRP?