Cisco WAN :: EIGRP Between 2xN5K And Upstream L3 Devices With Multiple Links?
Jul 29, 2012
We have got a pair of N5K and 4 N2k. So far, we have configured VPC Keepalive (2x10G) & VPN Peer (1x1G) between N5K. Also we have configured one N2K with Dual Hommed VPC with both N5K.Now I am having some difficulties with desining/configuring EIGRP with Upstream routers/L3 65xxVSS switch.
Here are the queries.
1) Do I have to create another 1GE link between these 2 N5K to enable routing in between.
2) For these 2xN5K should I enable Eigrp on physical Interface or should I create VLAN & VRF to enable routing in between.
3) For N5K to Upstream L3 device should I have to configure EIGRP on physical Interface or should I create VLAN & VRF to proceed. We have 2 uplink each to connect to 2 DC and we are not planning to aggregate 2 links (VPC or L3 Ether Channel) for each site.
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Jul 26, 2012
I have a remote site with 2 WAN links.Link 1 MPLS with telecom provider managing the PE and advertising EIGRP routes to my switch(3750-E stack).Link 2 Directly connected to core site switch (4506) and advertising EIGRP routes.
It looks like this:
-------- Provider MPLS Cloud ------- GI2/0/1Remote Site (3750-E Stack)
Core Site Switch(4506)----
gi4/2------------------------------------------------ GI1/0/1Remote Site (3750-E Stack)
When both links are up MPLS is disrupted from other sites (that have MPLS only) to the core site. I was unable to get a route list to see what exactly was going on before shutting the directly connected link down.What i'd like to have is:Use MPLS as my primary link as it is fully meshed with all my remote sites (and not just the core) and have the directly connected link as my failover in case of issues with the primary. I assumed putting a delay 1000 on the directly connected link at the remote site would have been enough but it looks like both were active and leaking routes all over the place Is there a way to set this up that the MPLS link is favoured and if it loses routes to that specific remote site it would failover to the directly connected link?
Here is my current configuration for EIGRP on the remote and Core sites:
Remote 3750-E
router eigrp 100
redistribute connected
redistribute static
passive-interface default
no passive-interface GigabitEthernet1/0/1
[code]....
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Nov 11, 2012
I am imagining a smallish networking (AS1234) with say three full BGP table peers that provide transit to the network (just to keep the maths simple here); Lets say AS100 and AS200 are preferred transit providers with AS300 as a backup/least prefered (AS prepends or similar stop us from using this network by default). So in this scenario our little network gets two different paths across the Internet, as not to rely solely on one provided, with a backup provider to hand also.
How do you mange issues like packet loss somewhere in AS100's or AS200's network? So lets say a host on our AS1234 network is talking to host in AS888 and the preferred route is through AS100 but somewhere deep in AS100 a link is flapping (for example) and I can't get to AS888 reliably through there anymore, but I can through to other peers of AS100 OK. We can postulate that AS100 is the best path for 50% of the Internet and AS200 for the other 50% (this is a best case fictional scenario). I can't ping 50% of the internet via AS100 and then in the event a ping fails (or some other more reliable test) tear down the BGP session to use AS100 until it's fixed again, nor vice versa with AS200.
First of all, I asume you don't know about the issue between AS100 and AS888 until someome moans about it to you? Secondly, do you then some how modify the route(s) to AS888 that come from AS100 (route map for example to change the weight or preference) so AS200 is now preferred for AS888? Do you infact shut down the AS100 peering and now use AS200 & AS300? How do you rectify these situations that are beyond you control using what is in your control?
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how we can acheive two ISP's on one PIX since only two Ethernet ports are availble.
PIX Details:
Cisco PIX IOS 7.2(2)
PIX-515E, 128 MB RAM
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Mar 13, 2011
I want to configure Reliable static routing with object tracking. I have a cisco 3825 and 3925 router in which the hsrp will be configured . Now these two routers are connected a remote site via three different WAN connectivity as under
1. MPLS
2. LL-1
3. LL-2
The priority of routing is also the same sequence.
Now if the MPLS goes down the remote site should be connected via LL-1. If both the MPLS and LL-1 goes down the remote site should be connected via LL-2.
The LL-1 is terminated on cisco 3825 and LL-2 is terminated on cisco 3925. MPLS is terminated on both cisco 3825 as well as 3925 router.
Whether multiple tracking options are available so that i can achieve the same. Topology diagram is attached.
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