03-19-2012 09:00 AM - edited 03-07-2019 05:39 AM
Hello,
I currently have two Nexus 5548UP switches in my environment running the
latest code (n5000-uk9.5.1.3.N1.1a.bin). Both of these switches are
connected via a VPC Peer Link (two ports on each switch in an Ether
Channel) and a VPC-Keep Alive Link (a dedicated port). Hosts connect to
each switch via a VPC for both IPV4 and FCOE.
As of right now, everything works. I currently have a stack of two 3750
switches that each Nexus is connected to. This stack is doing all the
Intra-VLAN Layer 3 Routing for the Nexus Switches. However, I plan to
get rid of the 3750s, and move the Layer 3 Routing the Nexus 5548's, so
the backplane is 10 Gig instead of 1 Gig.. I have the Layer 3 Daughter
Card installed in both switches, as well as the LAN_BASE license.
So, at the moment, I am trying to find the best way to accomplish Layer
3 Routing on these two switches. Since the Nexus switches are not
stacked, and the FCOE portion of HA is taking care of by the
Multipathing agent on each host, I believe am just concerned with
providing Intra-VLAN routing in an HA build where if one switch goes
down, VLANs still route through the other switch.
Again, since the Nexus switches are not stacked, I am guessing the best
way to handle this is with HSRP, but my experience with that has always
been with routers that have a switch in the middle. Can I make HSRP
work without having a switch between the Nexus switches? Can I track
the VPC peer link, or how do I do it? I guess I am looking for a sample
config.
Let's pretend I had two VLANs:
VLAN 20:
10.20.20.254 - GW and 10.20.20.0/24
VLAN 40
10.40.40.254 - GW and 10.40.40.0/24
And I wanted the Nexus switches to route these VLANs regardless of which
switch was up / down... what's the best way to accomplish that?
I've attached my current configs (scrubbed, of course) to help.
Thanks!
- Grant
Solved! Go to Solution.
03-20-2012 12:37 AM
Hi
two n5k in vc can easily run hsrp without any intermediate swiitch. Basically both n5k are switches with SVI's, so hsrp will be established between svi's.
this will look like:
n5k1==vpc(hsrp)==n5k2
As for routing - you can add "peer-gateway" on both n5k which will enable them route packets destined to neighbor's router mac.
Both n5k upon receiving frame destined to mac address of supervisor (router engine) of it's peer (this also includes hsrp mac)
I think this ocument will be helpful:
HTH,
Alex
03-20-2012 12:37 AM
Hi
two n5k in vc can easily run hsrp without any intermediate swiitch. Basically both n5k are switches with SVI's, so hsrp will be established between svi's.
this will look like:
n5k1==vpc(hsrp)==n5k2
As for routing - you can add "peer-gateway" on both n5k which will enable them route packets destined to neighbor's router mac.
Both n5k upon receiving frame destined to mac address of supervisor (router engine) of it's peer (this also includes hsrp mac)
I think this ocument will be helpful:
HTH,
Alex
03-20-2012 07:04 AM
Thank you! That was what I was looking for.
03-20-2012 07:06 AM
I'm hapy that was able to answer you to your questions.
have a great day.
Regards,
Alex
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