ds1-ds2 running hsrp)

[alsayed]

Hi

ps examine the design in the attachment;sw1 connected to sw2 via stack &sw1 connected to ds1 also sw2 connected to ds2.(ds1-ds2 running hsrp).this a good physical link or what?what is ur suggestion?this will work proprly?

10xs

[gpulos]

yes, this design will work.

you can also use the HSRP to perform load balancing between the MSFCs/routers by alternating HSRP priorities of VLANs.

also, be sure to verify your SpanningTree config; rootBridge; BPDU guard/filter; rootGuard, etc...

see this link for more HSRP info:

http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration_guide_chapter09186a00801cdf27.html

see this link for more STP info:

http://www.cisco.com/en/US/tech/tk389/tk621/tsd_technology_support_protocol_home.html

[alsayed]

Hi

Simple config(by alternating HSRP priorities of VLANs)please!

10xs

[devang_etcom]

ds1

interface Ethernet0

ip address 171.16.6.5 255.255.255.0

standby 1 preempt

standby 1 ip 171.16.6.100

standby 1 track Serial0

standby 2 preempt

standby 2 ip 171.16.6.200

standby 2 track interface

standby 2 priority 95

ds2

Current configuration:

interface Ethernet0

ip address 171.16.6.6 255.255.255.0

standby 1 preempt

standby 1 ip 171.16.6.100

standby 1 track Serial0

standby 1 priority 95

standby 2 preempt

standby 2 ip 171.16.6.200

standby 2 track interface

you can configure like this

regards

Devang

[devang_etcom]

here you can have any interface tracking which you would like to track... as i tracking serial 0 on above configuration... you can use as per your requirement...

regards

Devang

[gpulos]

router1:

interface VLAN 10

standby 10 ip 10.10.1.1

standby 10 priority 105

standby 10 preempt

interface VLAN 15

standby 20 ip 10.15.1.1

standby 20 priority 110

standby 20 preempt

switch2:

interface VLAN 10

standby 10 ip 10.10.1.1

standby 10 priority 110

standby 10 preempt

interface VLAN 15

standby 20 ip 10.15.1.1

standby 20 priority 105

standby 20 preempt

this very basic hsrp config will provide the following:

switch1:

* provides primary routing for VLAN 15

* provides backup routing for VLAN 10

switch2:

* provides primary routing for VLAN 10

* provides backup routing for VLAN 15

you should also look into HSRP Tracking to track specific interfaces for up/down so HSRP can adjust accordingly. (document link previously provided)

i also like to set priorities on all hsrp groups above the default 100. (kind of a failsafe incase someone else adds an hsrp config to a specific group without setting a priority; keeps the new hsrp addition from becoming active accidentally)

i also like to keep hsrp priorities 5 points apart. so if you use Tracking (recommended) the hsrp priorities will not become the same as they would if they were 10 points apart. (tracking by default lowers the tracked interface HSRP priority by 10 when tracking discovers a down interface)

any further input from others on hsrp best practices is welcome.

[alsayed]

Hi gpulos!

10xs for ur reply.great explanation!

[alsayed]

Hi gpulos !

if i use ur config.what about the route bridge primary.and route bridge secondary on the 2 distribuation .i have 50 vlans.

Simple config ps!look i know the command:

spaning tree vlan x primary(ds1)

spaning tree vlan x secondary(ds2)

10xs

[gpulos]

can you supply the configuration(s) of the switches?

not fully clear of your query. are you asking about spanningTree config and how to setup rootBridge and backup rootBridge properly?

[devang_etcom]

yes it will work properly and you can also use the different HSRP standby group configuration in order to acive the optimum utilisation of you resources...

or you can say the loadbalancing with HSRP...

regards

Devang