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Questions tagged [fhrp]

For questions about First Hop Redundancy Protocols (FHRP) such as VRRP, HSRP, GLBP ...

3
votes
1answer
43 views

Can a router be part of multiple HSRP groups?

Because we configure HSRP on interface level, is that possible?
2
votes
1answer
41 views

How exactly does a router get elected as an Active router in HSRP?

I know the overview of HSRP and that election depends on priority. I also know that only active and standby routers send hello messages every 3 seconds. But when the routers are first configured with ...
1
vote
2answers
92 views

HSRP limitations on Catalyst 3560

I have read all of the documentation so many times that I put myself into a headspin. Now the sentences I read don't make any sense. What exactly is the HSRP limitation on Cisco Catalyst 3560 ...
1
vote
1answer
113 views

hsrp on both side of router

i tried to create a simple network topology to test the Hot standby router protocol gateway for "server2" and "server3", and the architecture is shown in the figure below. i would like to clarify ...
2
votes
1answer
623 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 ...
2
votes
2answers
980 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
527 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 ...
1
vote
1answer
148 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 ...
1
vote
1answer
539 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 ...
6
votes
1answer
1k views

Cisco HSRP CAM vs ARP timeout

Today we received email from our ISP saying they are performing maintenance on their network so if you have HSRP connectivity with them in that case you need to clear ARP table or reduce ARP timeout ...
1
vote
3answers
879 views

HSRP Issue Both sides are active ( Layer 3 4300 X serires)

Why does HSRP shows both sides are active HSRP? Could you please give me details answer? First router: **Vlan111 - Group 6** State is Active 5 state changes, last state change 2w4d Virtual ...
1
vote
1answer
2k views

HSRP change priority didn't failover

I have HSRP running on two L3 switch and i change priority to higher but it didn't failover, why? SW1 interface Vlan30 description Internal_PrivateIP ip address 10.5.0.2 255.255.248.0 no ip ...
2
votes
1answer
3k 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 ...
2
votes
2answers
311 views

Can I use HSRP for router hardware redundancy?

I need solution for router hardware redundancy. Two routers 2900 series with same configuration, toward same ISP. If one fail second to do failover. Can HSRP do this? Can outside interfaces be set ...
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 ...
1
vote
1answer
3k views

HSRP issue both device active stats

Here is the Diagram. Ip address: ISP: [VIP]- 10.107.25.5 [R1] - 10.107.25.6 [R2] - 10.107.25.7 Me: [VIP] - 10.107.25.10 [SW1] - 10.107.25.11 [SW2] - 10.107.25.12 Configuration on port: SW1 ...
1
vote
1answer
54 views

Is priority the only factor for selecting the AVG when using GLBP?

I am studying for CCNA and the book I am using states that Once configured, the two routers negotiate as to which will be the AVG. As with HSRP, if both come up at the same time, R1 will win, ...
3
votes
1answer
4k 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
577 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
2answers
598 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 ...
3
votes
1answer
210 views

HSRP causing switch CAM entries to expire

I have host which is connected to a switch. I need to establish a communication with a server which is not in my network. So I am using two routers(gateways) ,configured with HSRP, between my host and ...
1
vote
1answer
365 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 ...
7
votes
2answers
1k views

Won't GLBP confuse a switch's mac address-table?

Say for example two routers (R1 and R2) are connected to the same switch (SW1) and both routers have Gateway Load Balancing Protocol (GLBP) correctly configured as the First-Hop Redundancy Protocol (...
16
votes
7answers
89k views

What are the differences between VRRP and HSRP?

Are there any significant differences between VRRP and HSRP?