From: mani poopal (mani_ccie@yahoo.com)
Date: Thu Jan 27 2005 - 00:42:49 GMT-3
Yes guys, finally I think vrrp is a viable option. I know config of vrrp is similar to hsrp. I would like to know/study the difference between hsrp and vrrp
cheers
Mani
"Alexander Arsenyev (GU/ETL)" <alexander.arsenyev@ericsson.com> wrote:
Hello,
You may wish to consider the following "workaround" kind of solution:
1. Summarize the lab IP address range into one block, i.e. 10.0.0.0/8
2. Assign unused IP address from this range to the client's interface
as secondary:
"ip address 10.255.255.254 255.0.0.0 secondary"
3. From this point ALL IP addresses in the lab will be treated by client
as "directly connected" and it will ARP for every destination address
4. Any router hearing the ARP request will respond it it has route to the destination
(by default, proxy ARP is enabled on Cisco routers). The failover will be dynamic
as long as proxy ARP is not disabled.
5. Reduce ARP timeout on client's interface to speed up failover
6. NAT can be used to manipulate the source address in outgoing packets from client,
see my earlier post on how to make BGP work with secondary addresses.
Anyone tell me why it shouldn't work?
HTH,
Cheers
Alex
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]
Sent: 26 January 2005 20:18
To: mani_ccie@yahoo.com; benlai_cn@hotmail.com; ccielab@groupstudy.com
Subject: RE: HSRP
I think two default gateway is not a correct solution, because solution
depends on the type of clients...not all clients behave in the same
manner....I think it should be VRRP
-----Original Message-----
From: mani poopal [mailto:mani_ccie@yahoo.com]
Sent: Wednesday, January 26, 2005 1:59 PM
To: ben; ccielab@groupstudy.com
Subject: Re: HSRP
Hi Guys,
I tried 2 default router option. So how it is used, is it the first ip
address is given to clients and if the first gateway is down, pc's must be
rebooted(or renegotiate ip addheress request) to get the new gateway. If
scenario asked for gatewa y redundency without hsrp, it this is a valid
solution or we have to go with vrrp or drp.
R2(dhcp-config)#default-router 1.1.1.100 1.1.1.200 <--so I think, this
router will give 1.1.1.100 as default gateway.
thanks
Mani
ben wrote:
what about if the CCIE lab exam doesn't let you configure DHCP feature on
any of the router explicitly? Can we still use the DHCP with two
default-router option?
----- Original Message -----
From: "IMAM"
To: "'ccie Meftahi'" ; "'mani poopal'" ;
Sent: Wednesday, January 26, 2005 9:37 AM
Subject: RE: HSRP
> I think this right, if the gateway redundancy in DHCP mechanism so
> double default gateway is right solution, these mechanism same like DRP
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ccie Meftahi
> Sent: Tuesday, January 25, 2005 5:59 PM
> To: mani poopal; ccielab@groupstudy.com
> Subject: Re: HSRP
>
> DHCP with more than 1 default gateway might be a solution.
>
> Sam
>
> mani poopal wrote:
> Hi Guys,
>
> If a scenario asks for gateway redundency without hsrp, what are other
> available option. Does VRRP is supported on the routers in the lab(it is
> not working on my routers). Guys I dont think that DRP is another
> available option because for DRP to work you should have DRP aware
> clients. Any feedback is appreciated.
>
>
> thanks
>
> Mani
>
>
> B.ENG,A+,CCNA,CCNP,CCNP-VOICE, CSS1,CNA,MCSE
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