OER

Answered Question
Aug 4th, 2009

i know little bit about OER just need to know .Can i deploy OER with dynamic routing protocol my client using TWO ISP i wanna configure OER for WAN redundancy i have already done IP-SLA objet tracking WAN redundancy please provide me configuration guide of it

thanks in advance

I have this problem too.
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Correct Answer by jamesfang98 about 7 years 4 months ago

u welcome!

OER works geat with BGP since it will have more granuar control. For OER with EIGRP, I think it is durable. But not sure what is your existing setup.

Check this portion in OER configuration guide: "redistributing static routes into EIGRP in an OER-managed network' for reference about EIGRP/OER.

Before config OER, first to evalute the exisitng network setup and the possible solution options - some may be costless but with dramatic change, some may be costly but with limited change or visa verse

Correct Answer by jamesfang98 about 7 years 4 months ago

yes I think so. OER with iBGP is the solution I used to config 4 yrs ago for Enterprise-wide 3 sites.

Now, Cisco has renamed OER to 'performance routing'.

Basically, OER collect the statistics (jitter, packet loss, etc) for the whole routing paths, then use these statistics to adjust route selection.

Key thing is: for general multi-homed ISP connections, we normally use VRRP, HSRP but it cannot select optimze routing path but only failover or limited load balancing. This is why OER (now, performance routing) kick in.

OER overview: http://www.cisco.com/en/US/docs/ios/oer/configuration/guide/oer-overview.html

OER config:

http://www.cisco.com/en/US/docs/ios/oer/configuration/guide/oer-setup_netw.html#wp1055270

Search through Cisco Doc for OER:

*****

Cisco Optimized Edge Routing (OER) automates routing in order to select the best path based on cost minimization, load distribution policy, and overall network performance. Cisco OER enables intelligent network traffic load distribution and dynamic failure detection of data paths at the WAN edge (for example, multihoming to the Internet or for intranet connectivity). Unlike other routing mechanisms, which use static routing metrics, Cisco OER makes adaptive and dynamic routing adjustments based on criteria such as response time, packet loss, jitter, mean opinion score (MOS), path availability, traffic load distribution, and cost minimization policies.

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Correct Answer
jamesfang98 Wed, 08/05/2009 - 06:48

yes I think so. OER with iBGP is the solution I used to config 4 yrs ago for Enterprise-wide 3 sites.

Now, Cisco has renamed OER to 'performance routing'.

Basically, OER collect the statistics (jitter, packet loss, etc) for the whole routing paths, then use these statistics to adjust route selection.

Key thing is: for general multi-homed ISP connections, we normally use VRRP, HSRP but it cannot select optimze routing path but only failover or limited load balancing. This is why OER (now, performance routing) kick in.

OER overview: http://www.cisco.com/en/US/docs/ios/oer/configuration/guide/oer-overview.html

OER config:

http://www.cisco.com/en/US/docs/ios/oer/configuration/guide/oer-setup_netw.html#wp1055270

Search through Cisco Doc for OER:

*****

Cisco Optimized Edge Routing (OER) automates routing in order to select the best path based on cost minimization, load distribution policy, and overall network performance. Cisco OER enables intelligent network traffic load distribution and dynamic failure detection of data paths at the WAN edge (for example, multihoming to the Internet or for intranet connectivity). Unlike other routing mechanisms, which use static routing metrics, Cisco OER makes adaptive and dynamic routing adjustments based on criteria such as response time, packet loss, jitter, mean opinion score (MOS), path availability, traffic load distribution, and cost minimization policies.

Pls rate if help

Faizan Khursheed Wed, 08/05/2009 - 08:53

thanks for your valubale comments thanks sir can i use EIGRP instead of BGP coz my client have two ISP he want redundancy

.one year back i have already done WAN redundancy by using object tracking IP sla now willing to use OER.

which things i have to focus before configure OER to my client

Again thanks

Correct Answer
jamesfang98 Wed, 08/05/2009 - 13:03

u welcome!

OER works geat with BGP since it will have more granuar control. For OER with EIGRP, I think it is durable. But not sure what is your existing setup.

Check this portion in OER configuration guide: "redistributing static routes into EIGRP in an OER-managed network' for reference about EIGRP/OER.

Before config OER, first to evalute the exisitng network setup and the possible solution options - some may be costless but with dramatic change, some may be costly but with limited change or visa verse

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