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5300 routing

rob misz
Advisor

5300 routing

Please forgive im new to networking. We recently leased metro Ethernet. We have two locations (Site A, Site B) with 5300 series switches Routing is enabled at site A and site B. we have a server VLAN and PC VLAN at both sites. The uplink ports to the metro E are tagged for both VLANs. We have servers at both locations. Lately we’ve been having latency issues on the server VLAN.  Should I create a new VLAN that has the unlinks port untagged to the metro E network and create static routes to each location

Site A:

vlan 12

   name "PC"

   untagged A8-A16,A19-A23

   ip address 192.168.2.254 255.255.255.0

   ip helper-address 192.168.99.5

   tagged B15-B16,C1,C4,D4

   ip igmp

   exit

vlan 13

   name "Servers"

   untagged B3-B6,B8-B11,B13

   ip address 192.168.99.254 255.255.255.0

   tagged B15,D4

   ip igmp

   exit                        

 

 

 Site B:

vlan 13

   name "Servers"

   untagged B5,B13-B14

     tagged B16

   ip igmp

   exit

vlan 12

   name "PC"

   no ip address

   tagged B12,B15-B16

   ip igmp

   exit

1 REPLY
Matcol
Frequent Advisor

Re: 5300 routing

Generally, if you have a new site, I find it best to design the subnets for that site as independent ones - then it can function independently of Site A if required.

 

As you say both routers have routing enabled, it seems even more obvious that SIte B's local hosts have their default gateway locally, with routing to get them off-site.

 

However, often a link between sites used by *servers* requires layer2 connectivity for the server subnet (VMotion, etc...).

 

In any case, "latency issues on the server VLAN"?

 - Sounds like a Server Team trying to pass off their problems as being a "network problem".

 

--> Work with them to pinpoint the exact location of the issue: what you will be trying to do is prove exactly which server/switch interfaces are on the path of the "latency issues" and demonstrate that each relevant switchport is always running with lots and lots of spare capacity.