Cisco WAN :: Load Balance Between 2 3750 Switches With Equal-cost Paths
Jan 16, 2012
I have two offices in rural area with a quite distance between them. Offices are connected with private wireless 100Mbps and cooper 100Mbps links provided by different ISP. Wireless connections are delivered as a private L3 Ethernet link but cooper as private L2 Ethernet trunk link. In both offices I have Cisco 3750 L3 switches. I would like to use both link (equal-cost paths) in load balanced configuration but not sure how. Both switches running EIGRP. Asymmetric routing is not an option. Per-destination load-balancing or something else?
I have a query on how the 6500s running in VSS mode would route the traffic over an OSPF environment where it has leant about two equal cost paths, but one via the 2nd chassis.Proposed setup - 2 6509s running in VSS. Switch-1 in VSS has a layer 3 connection (via a LES circuit) to one of a pair of Nexus 7Ks at another office. Switch-2 in the VSS has another layer 3 connection (via LES by another provider) to the other N7K at the other office. The L3 connections would use /30 ranges and allow each Nexus to form an ospf neighbour relationship with the VSS. We want to keep both offices environments separate so although we do have L2 circuits we're using these to provide L3 connectivity between sites & exchange routing info via them using ospf.
Each Nexus will advertise all the directly connected networks it knows about to the 6509s running in VSS. Thus I couldn't figure out if for example we have users/servers behind our VSS 6509s, these would need to go via their default gateway to get to a network located off the LAN, the default gw ip in VSS setup exisits on the control plane on switch-1 (in normal operation). Then to get to a network that is located off the Nexuses at the other site it would have 2 equal cost paths to it, however one of these paths would be via the VSL link and off the switch-2 chassis. I wasn't therefore sure if we'd actually ever see any transmit traffic via the 2nd L3 connection because I have a funny feeling that I've read the VSS always choses the local chassis egress rather than going via the VSL to use another port...
All of the above is theorectical at the moment as currently both circuits are connected to a single Nexus/6509 chassis however for improved resilence I want to move one of the circuits to be physically attached to the other Nexus & 6509 chasis at each site but I wasn't then sure how the traffic flows would be affected.
What is the load balance method of 3750 port channel ( by source ip , or by source mac ) to diver traffic to paths? I have tried to use 10.242.104.101 and 10.242.104.102 as source ip, it will travel to the same link (G0/1) within one port channel (G0/1+G0/2). Howerver, if I later use 10.242.104.109, then this time it will traffic to G0/2 link. What's the concept behind.
We have a 3750 at the center of one of our offices. This office has two internet connections, and applications that we want to use the seperate Internet connections, but not both. Currently we have an ip route statement on the 3750 sending Internet traffic to one of the Internet routers. Whats the easiest way to send speciffic applications to the other using the 3750?
What is the best way to load balance traffic between an FWSM and ASA 5520? Both are attached to a 6509-E (in seperate VLANs). The problem is the FWSM doesn't support any dynamic routing protocols (in multi context mode). So with my limited knowledge I don't see a way to do this.
Is it possible configuring load balance with three intefaces, in my router with the following features?I have three ISP, and would like balance the traffic ... Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(2)T1, RELEASE SOFTWARE (fc1) Cisco CISCO2911/K9 (revision 1.0) with 483328K/40960K bytes of memory.
Processor board ID FTX1613AH8D 3 Gigabit Ethernet interfaces 1 terminal line 2 Channelized (E1 or T1)/PRI ports 1 Virtual Private Network (VPN) Module DRAM configuration is 64 bits wide with parity enabled. 255K bytes of non-volatile configuration memory. 250880K bytes of ATA System CompactFlash 0 (Read/Write)
I am using 192.168.1.1 as database server in head office. my branch user are more than 500. all user hit at 192.168.1.1 for database. Now i want to NAT with application server 192.168.1.50 and 192.168.1.51 with load balance As some user hit 192.168.1.1 form branch but traffic go to 192.168.1.50 and some users traffic go to 192.168.1.51.
I want to do it in My core router (Cisco 3845) in Head office. How i do these two things ?
I have problem with VPN and Load Balance at the same time.VPN (Gateway to Gateway) between two RV042 routers is working fine with only one WAN or two WAN's with Smart Link Backup. If i switch to Load Balance communication through VPN is almost impossible.
I have postgres server (port 5432) in first location and clients in another. Clients cannot connect to server or lose connection after while. This is example, but every communicaton except ICMP over VPN with Load Balance enabled is faulty (file sharing, RDP...). Everything works fine using public IP and port forwarding or VPN with only one WAN.
If i understand it correctly Protocol Binding should affect only "normal" communication (outside of VPN), but it looks like VPN communication is also divided between WAN1 and WAN2. Of course this cannot work this way because VPN works only with one WAN.
Another question - is it possible to bind communication TO selected target port with RV042 Load Balancing to selected WAN?
I would like know, what license is necessary to employ a load-balance in a 2911 router. I have these licenses bellow, can i configure an load balance?In this cenario we have two links with an ISP.
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(2)T1, RELEASE SOFTWARE (fc1) Cisco CISCO2911/K9 (revision 1.0) with 479232K/45056K bytes of memory. Processor board ID FTX1613AH8D 1 FastEthernet interface 3 Gigabit Ethernet interfaces 1 terminal line 2 Channelized (E1 or T1)/PRI ports(code)
We have a Dlink Lb 604 router. We have two wan connections. Connection 1 has a speed up to 8 Mbps.Connection 2 has a speed of 1Mbps.We set the load balance to 50-50. When we tested the speed with two lines it is showing 1 Mbps only.When working with connection 1 we are getting speed upto 6 Mbps.
I have a D-Link DSL 2640B on the way which I plan on using to replace my 2Wire modem. The 2640B is a combination of a modem/wireless device. Does it dynamically load balances the internet connection? Sometimes while I'm playing online games on my PC and a few others are using the internet for browsing or Youtube, I lag A LOT. Latency shoots up from 10 to 200. QoS goes to ****. And I only need 0.50-1Mbps to keep a steady online play. This was the problem with my 2Wire. So does the 2640B load balance the bandwidth?our max speed is 3.5Mbps according to the ATT Rep.
i need to know how many links i can using with load-balance on the same router ? i have router cisco 2901 , 3 providers , every provider having 4 links can i load balance between 12 links ? i am using static route
I want to split my traffic between two ISP's. I want all traffic to pass over one connection EXCEPT my VPN tunnels, which I want to use the second ISP. How should I set up (protocol binding?) to accomplish this? (I have run into various problems trying to load balance all traffic. So I am trying to "partition" traffic.)
I have set up an RV042 v1 and v3 both in Load Balancing mode. Set in Router mode.I want one of the WAN ports to be preferred so I added a static route to 0.0.0.0 metric 5 to that WAN.Sometimes the route shows in the routing table and sometimes it goes away!!
I've finished a part of the configs on above equipments, please refer to the attached diagram.And I'm making a test in order to achieve the below features:
1. By default, packets from PC1 go out through ISP 1. Packets from PC2 go out through ISP 2 2. When ISP 1 is down, packets from PC1 changed its way to ISP 2 through the 2800 router. And when ISP 2 is down, Packets from PC2 changed its way to ISP 1 through ASA 5510.
I have several RV16 with two internet connections each one, but different speed each wan connection, it takes the slowest wan connection allways, I use the round robin option, any clue in configuring?
We want to us an ISA570 and load balance between two isp connections, two of our switches will be standalones and not connected to one another. One switch will be for data and another VOIP/Data. The ISA will also do NAT and we need to make sure that the VOIP network can get out to the first isp. I assume we will need a static route for that to make sure it goes out the right isp. I just don't know if routing mode needs to be enabled in order to specify a static route, because I heard you can't have NAT and do routing mode at the same time.
I configured a RV042 to load balance 2 WANs. It appears to working well but I would like a 2nd opinion as to whether or not I chose the proper settings to accomplish the task.
1. WAN1(ISP1) is the existing internet connection(1.5mb T1). I have a block of static IPs with ISP1. 2. I added ISP2 to the RV042's WAN2 connection to increase bandwith (10mb). I only have one static IP on ISP2. 3. I want everyone on this router to use WAN2... well... almost everyone... for the most part. 4. I want to keep WAN1 active on this router because there will be periodic inbound connections using static IPs (from ISP1) that are setup with one-to-one NAT. I also have a voicemail system that needs to continue to use ISP1's email relay (SMTP,25).
Anyway, I was able get the outgoing traffic that had to remain on WAN1 working with protocol binding. In order to get the router to use WAN2 for pretty much everything else, I set it for load balancing and set "Max. Bandwidth provided by ISP" for WAN1 up & down kbits/sec both to 32 (very low). I left the WAN2 up & down settings to the actual speed of WAN2.
The result is very low traffic on WAN1 and lots of traffic on WAN2 which is what I wanted. Did I do this right? Is there another preferred method to accomplish this.
I have 3 877 ADSL routers for internet connectivity. I recently installed a FW behind them and would like to use the Ciscos as load balance in order to get better utilization from my 3 internet links.
1) the 3 routers are on DHCP from the ISP on the WAN side.
2) the 3 ciscos are on the same class C subnet on the LAN side: 10.201.1.252, 10.201.1.253 and 10.201.1.254
ISP environment with 3 Cisco 7200 BRAS ( NPE-G2 ) , we need to load balance traffic between two of them so the load balancer will accept traffic from backhauling link and distribute traffic the upper two BRAS , can we achieve this using spare 7200 we have or is there any software solution can do this .
another question , Cisco 7200 VXR ( NPE-G2 ) , does it support concurrent calls or sessions from more than 16000 subscriber ?
Have two ACE 4710 in HA setup. We would like to setup HTTPS loadbalance(actually just a primary and standby configuration in the serverfarm). Initially this would be for Exchange OWA connections but may expand to more HTTPS connections later. I know there are several ways to do SSL with the ACE( client, server, end-to-end). I am just wanting to know the easiest way to deploy this? Is a certificate always needed on the ACE for each connection? In HA mode would a certificate be needed for both or does it replicate in some way to the other ACE?
I have been experiencing some issue with a portchannel interface.I have two cisco switches 3560 and I have a portchannel between them ( It is composed by two gigabitethernet interfaces generating a portchannel of 2 Gigas ).Unfortunately, I am verifying that one interface traffics about 893MB but the other interface only traffics about 100MB.Is there any cause why is this happening? I thought that maybe both interfaces would traffic about 450MB.Is there some wrong configuration with the load-balance command?. At this moment there is no load-balance, It is only configured the port channel with the default configuration.
I have a 1841 router attached to 2 ISP's. Each ISPs provides different bandwithd. I want to do load balance between them, but I want to do some sort of weighted load blance, so as to assign more traffic to one ISP than the other. A kind of 70/30 (70% of traffic via ISP1, and 30% of traffic via ISP2).Is there a way to acomplish that? I already tried creating bogus /32 routes, but "cef" seems to be more clever and groups the bogus routes as one gw.
I have used EIGRP with the variance command for years. Recently we swapped out our 6513 for 2 Nexus 7K's and lost the variance command. So now I'm stuck running our two MPLS routers to a 3750 which then connects to the 7K's, so I can get the unequal load balancing back in operation.So because I can't play with it while it's in production I'm using dynamips to simulate the configs. The problem is I'm not able to get a traffic share count ratio that reflects the actual difference in bandwidth.
The two lines have 155 MB and 45 MB respectively, for a ratio of 3.4. Now you can't really send ".4" of a packet but the total packet ratios when dividing the traffic share count should be similar. I'd settle for 3. I was able to get 2.9 in the past but now on the simulator I can't even get that. I'm seeing traffic share counts like 120:89 and 120:71 depending on how I fudge the metrics when I inject the routes from BGP.
I found this link: [URL] a stellar article by the way, and this guy is doing calculations to arrive at a 5:1. BUT when I apply the same formula using specifics from my network and the desired ratio of 3:1 what I get is an AD so high that the route is no longer feasible. I simply cannot make a ratio fo 3:1 using the formula. How to be able to make anything other than a marginal ratio actually work or is this all just theoretical?
I am trying to configure ACE 4710 to load balance base on the URL, If it matches the specific URL ( /456/ ), the traffic will be sent to server farm 456 else the traffic will be sent to server farm 123.
I attached an image of the topology.
Ace Config:
rserver host SRV01_123 ip address 192.168.1.101 inservice