ASA load balance per destination

Hello,
I have an ASA with version 8.4.4.1 connected via a switch to two routers and I have two default routes on the ASA pointing to the two routers.
The question is : Does the ASA load balance the traffic onto the two routers per-destination or per-packet?
As in routers, CEF load balances the connection per-destination by default. So, what about the ASA regardless of  the hardware.
Regards,
George

No. Everything will go to lowest cost route. Matthew

Similar Messages

  • Load Balancing per packet not working properly

    Hi,
    I am attaching you the configs of issue. There are two links E1 links from
    Karac-1(Serial0/0/0:0 & 0:1) and Karac-2 with (Tunnel10) which were connected with Khask-1w
    Now the issue is that Load balancing per packet were not done sucessfully the NMS snap shot is already attached.
    Load balancin g only configured in KarAC-1 & 2
    What is the resolution of this problem traffic only use on two links but third links were not utilize.
    Kind regards,Salman Ahmed

    Hi Paolo!
    I have one doubt pertaining to per-packet load-sharing. In order to connect my two data-centres- A & B, Site A is having two WAN links and Site B is having two WAN links - one from ISP1 (30Mbps link) and the other from ISP2 (50Mbps link). I am doing static route load balancing using same AD values for both the ISPs. I have configured "ip load-sharing per-packet" on both the outgoing interfaces.
    The load is getting distributed equally across both the links but total bandwidth utilization across both the links is not going beyond 30Mbps. The combined bandwidth of both links is 80Mbps (50+30). However links are not getting fully utilized even though heavy load is there on the links. Can you please tell me how to make full use of both the wan links at both the ends? OR Can you tell me how I can distribute the traffic across both the links with full utilization without using per-packet load sharing. Moreover, my links can be configured statically only at both the ends.

  • ASA LOAD BALANCE

    HELLO,
    ANYONE KNOWS WHAT DEVICE TO USE TO DO ASA LOAD BALANCING?
    THANKS

    no.
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  • ASA Load-Balancing intriguing question

    I have a setup where the inside interface may be in the same private subnet, but the outside interfaces, are most likely in different public subnets.
    For example. inside on both ASA: 192.168.1.1 and 192.168.1.2 /24 and the public connected even to two different ISPs.
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    you cant route based on source ip with firewall only with router possiable by PBR
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    in this case it will make the topology like active standby which not good in your case
    but you can use sub interfaces on your ASA intis case make each subinterface in deffrent subnet and deffrent security level
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    in multiple context you gonna separate your firewall virtualy
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    u goona divide the internal interface to two subinterfaces
    and you can use one outside interface shred between the context or also separate it to two subinterfaces
    and allocate those interface to each context
    so you gonna deal with each context as deffrent firewall
    and you can use deffrent HSRP instance on each context
    but with multiple context you cant use VPN on the firewall
    *****use the following method*****
    THE OTHER WAY WHICH ALSO I SUGIST YOU TO TRY IT WHICH IS THE Transparent Firewall
    in the case your firewall will operate in L2 mode
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    which i thnk helpful in you case aslo
    in transperante mode the defaultgate way for your client will be the hsrp IP because the firewall will not have any IPs exept for managment
    also the useres will be in the same IP subnet as the gateway in your case HSRP VIP
    and also you can control the network security through the firewall normally
    try this way and let me know
    see the following link for configuration
    http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a008089f467.shtml
    please, Rate if helpful

  • Aggressive Load Balancing Per SSI

    Hey team,
    I was looking through some docs but couldn't find out "WHEN" aggressive load balancing would be available per SSID on a WLC.  Does anyone have any feedback on this particular topic?  We have some legacy clients and we want to segregate them via WLAN and have the feature available when necessary without supplicants etc.
    Thanks in advance!
    bigjess

    Hi bigjess,
    Available as of 6.0.188.0 with 6.0.196.0 being the current maintenance release.
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  • Per Packet load Balancing in Cisco Switches

    Hi Team,
    Can we enable per packet load balancing/sharing in cisco 3560 and 4948 Switches ? I can see two routes are installed in routing table for a destination prefix but for traffic to specific destination is not going across both the link. The option what i am getting  in command line is ip load-sharing per-destination but not  ip load-sharing per-packet.
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    Rgds
    Rama

    Hi Ramachandra,
    On both these platforms per packet load balancing is not surpported.  it is a feature mostly seen in routers.
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    Source ip
    Dest ip
    Source tcp port
    Dest tcp port
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    The src/dst ports in the equation gives us this randomization. If the same (static) variables go into the hash, the
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    Follow this link for more details:
    http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/25sg/configuration/guide/cef.html#wp1150531
    cheers,
    sandeep

  • Load balancing via CHOC12/STS3

    Hi, our customer has a connection between 2 x 12012 via the 4 embedded channels of CHOC12/STS3 module.As every subinterface has its own ip-subnet we have 4 equal paths to every destinations.
    Customer wants to configure dCEF per-packet load balancing and is concerned if he can get packet sequence problems for his VoIP applications like it may happen on 'normal' equal path cost connections when load balancing per-packet instead of per-destination.
    Does anybody know if this can be a concern on the embedded channels ?
    Regards Guenther

    Generally speaking, for a given source-destination pair, with Per-packet load balancing enabled, packets might take different paths which could introduce reordering of packets. Thus Per-packet load balancing is inappropriate for voice over IP traffic and also for certain other types of data traffic that require packets received to be in sequence. For more information please see
    http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_configuration_guide_chapter09186a00800ca62c.html#3589. Whether the CHOC12/STS3 module has some special meachanism built in to take care of this is unknown to me. Per-packet load balancing via CEF is not supported on Engine 2 Gigabit Switch Router (GSR) line cards (LCs).

  • Shared public IP with same tcp port (round robin/load balance)

    Hi all,
    I want to know if I can do that with my ASA5515-X, I have two servers that can do the same thing, there are SSO servers, What I want to do is to publish the 2 servers on Internet with the same public IP address and on TCP 443.
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    Hi Yann,
    You can configure the ASA to allow traffic to your SSO server from outside on two public IP's. Users can hit either of the IP to reach the inside server. Now, load balancing would be achieved based on source devices sending request to public IP's. If source machine son internet use one public IP more to access the server, ASA can't do anything to load balance in such scenario. Here is how you can accomplish this:
    Assuming SSO server on inside is 192.168.16.110 and two public IP's are 192.168.17.110 and 192.168.17.111
    object network SSO_1
    host 192.168.17.110
    object network SSO_2
    host 192.168.17.111
    object network SSO
    host 192.168.16.110
    object service https
    service tcp source eq https
    nat (inside,outside) source static SSO SSO_1 service https https
    nat (inside,outside) source static SSO SSO_2 service https https
    Hostname(config)# sh xl
    2 in use, 6 most used
    Flags: D - DNS, i - dynamic, r - portmap, s - static, I - identity, T - twice
    TCP PAT from inside:192.168.16.110 443-443 to outside:192.168.17.110 443-443
        flags sr idle 0:00:06 timeout 0:00:00
    TCP PAT from inside:192.168.16.110 443-443 to outside:192.168.17.111 443-443
        flags sr idle 0:00:08 timeout 0:00:00
    Verification:
    Hostname(config)#    packet-tracer input outside tcp 4.4.4.4 discard 192.168.17.110 443
    Phase: 1
    Type: UN-NAT
    Subtype: static
    Result: ALLOW
    Config:
    nat (inside,outside) source static SSO SSO_1 service https https
    Additional Information:
    NAT divert to egress interface inside
    Untranslate 192.168.17.110/443 to 192.168.16.110/443
    Phase: 2
    Type: ACCESS-LIST
    Subtype: log
    Result: ALLOW
    Config:
    access-group outside in interface outside
    access-list outside extended permit ip any any
    Additional Information:
    Phase: 3
    Type: CONN-SETTINGS
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    Phase: 4
    Type: IP-OPTIONS
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    Phase: 5
    Type: NAT
    Subtype: rpf-check
    Result: ALLOW
    Config:
    nat (inside,outside) source static SSO SSO_1 service https https
    Additional Information:
    Phase: 6
    Type: IP-OPTIONS
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    Phase: 7
    Type: FLOW-CREATION
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    New flow created with id 3670, packet dispatched to next module
    Result:
    input-interface: outside
    input-status: up
    input-line-status: up
    output-interface: inside
    output-status: up
    output-line-status: up
    Action: allow
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    Hostname(config)#    packet-tracer input outside tcp 4.4.4.4 discard 192.168.17.111 443
    Phase: 1
    Type: UN-NAT
    Subtype: static
    Result: ALLOW
    Config:
    nat (inside,outside) source static SSO SSO_2 service https https
    Additional Information:
    NAT divert to egress interface inside
    Untranslate 192.168.17.111/443 to 192.168.16.110/443
    Phase: 2
    Type: ACCESS-LIST
    Subtype: log
    Result: ALLOW
    Config:
    access-group outside in interface outside
    access-list outside extended permit ip any any
    Additional Information:
    Phase: 3
    Type: CONN-SETTINGS
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    Phase: 4
    Type: IP-OPTIONS
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    Phase: 5
    Type: NAT
    Subtype: rpf-check
    Result: ALLOW
    Config:
    nat (inside,outside) source static SSO SSO_1 service https https
    Additional Information:
    Phase: 6
    Type: IP-OPTIONS
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    Phase: 7
    Type: FLOW-CREATION
    Subtype:
    Result: ALLOW
    Config:
    Additional Information:
    New flow created with id 3671, packet dispatched to next module
    Result:
    input-interface: outside
    input-status: up
    input-line-status: up
    output-interface: inside
    output-status: up
    output-line-status: up
    Action: allow
    Sourav

  • Email notifications and load balancing

    We are load balancing 2 OMS's. The problem is email notifications have embedded links that have the OMS that sent the notification instead of the virtual hostname set-up for the load balancer. The OMS's have been set-up to use the load balancer per the OEM Advanced Configuration and from an agent/Web console perspective, everything is working fine and using the load balanced hostname. Does anyone know where to modify the email notifications so the links point to the load balanced URL rather then the individual OMS host that sent the notification?

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  • Cisco 886VA - Multiple PPPoE Line Load Balancing

    Dear Cisco Community,
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    vlan 1
     name #LAN#
    vlan 2
     name #WAN-Uplink1#
    vlan 3
     name #WAN-Uplink2#
    interface FastEthernet0
     description #LAN#
     switchport access vlan 1
    interface FastEthernet2
     description #WAN-Uplink1#
     switchport access vlan 2
     no ip address
     pppoe enable
     pppoe-client dial-pool-number 20
    interface FastEthernet3
     description #WAN-Uplink2#
     switchport access vlan 3
     no ip address
     pppoe enable
     pppoe-client dial-pool-number 30
    interface ATM0
     description #WAN-Uplink3#
     no ip address
     logging event atm pvc state
     logging event atm pvc autoppp
     logging event subif-link-status
     no atm ilmi-keepalive
     no ip redirects
     no ip unreachables
     no ip proxy-arp
     dsl enable-training-log delay 0
     dsl bitswap both
    interface ATM0.1 point-to-point
     bandwidth 550
     bandwidth receive 6000
     pvc pvc 1/32
      pppoe enable
      pppoe-client dial-pool-number 10
      vbr-nrt 500 500 1
      service-policy out WAN-Control1-Parent
    interface Vlan1
     description #LAN#
     ip address 172.16.1.1 255.255.255.0
     ip nat inside
     ip virtual-reassembly in
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     description #WAN-Dialer1#
     bandwidth 550
     bandwidth receive 6000
     ip address negotiated
     ip mtu 1492
     ip nat outside
     ip virtual-reassembly in
     encapsulation ppp
     ip tcp adjust-mss 1452
     dialer pool 20
     dialer idle-timeout 0
     ppp authentication chap pap callin
     ppp chap hostname XXX
     ppp chap password XXX
     ppp pap sent-username XXX
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     ppp ipcp address accept
     no cdp enable
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     bandwidth receive 6000
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     ip nat outside
     ip virtual-reassembly in
     encapsulation ppp
     ip tcp adjust-mss 1452
     dialer pool 30
     dialer idle-timeout 0
     ppp authentication chap pap callin
     ppp chap hostname XXX
     ppp chap password XXX
     ppp pap sent-username XXXX
     ppp ipcp dns request accept
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     ppp ipcp address accept
     no cdp enable
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     bandwidth receive 6000
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     encapsulation ppp
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     dialer idle-timeout 0
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     ppp chap hostname XXX
     ppp chap password 7 XXX
     ppp pap sent-username xxx
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    Hey there,
    I managed to fulfill my requirement..
    If its a cluster on same machine or across machines, this should work
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  • Dev6 Server Load Balancing

    Hi
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  • 2 load balancing process in one router ?

    Dear,
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    Thanks in advance

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    Regards.
    Alain

  • Load Balancing using Virtual IP on DMZ interface of 5520 ASA

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    This IP points to 10.15.1.2 and 10.15.1.3 with .2 being the primary and .3 being the secondary.
    When I hit the outside IP, it should point me to .2 and that .2 should take me to the inside IPs.
    I need configuration assistance with that.

    Hi Pratik,
    The ASA does not support having 1 global/translated IP address on the outside mapped to multiple local/real IP addresses on the DMZ. If it did, the ASA would have no way of deciding if traffic destined to X.X.X.X is really meant for 10.15.1.2 or 10.15.1.3. For this scenario, you should use a dedicated load balancer or a router that supports policy-based routing.
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  • VPN load balancing and ASA !!!

    Hi netpros,
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    2.- How does the ASA handle the return traffic from the Internal LAN towards the remote client .. Because the cluster only requires ONE public virtual IP address, which will work for incoming packets .. but what about the return traffic which has knowledge of the DHCP scope's default gateway IP address only .. ? How gets the returned packet redirected from the default gateway IP address to the respective ASA internal IP address .?
    3.- VPN load balancing only applies to remote clients using easy VPN technology (easy vpn client, hardware client , pIX using easy vpn client etc ) and does not work with static LAN-LAN tunnel .. correct ..?
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    Hi Gilbert ..
    1.- Thanks I wanted to make sure.
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    1) 2 x ASA 5520, running 8.2
    2) Both ASA are in same outside and inside interface broadcast domains – common Ethernet on interfaces
    3) Both ASA are running single context but are active/standby failovers of each other. There are no more ASA’s in the equation. Just these 2. NOTE: this is not a Active/Active failover configuration. This is simply a 1-context active/standby configuration.
    4) I want to share VPN load among two devices and retain active/standby failover functionality. Can I use VPN load balancing feature?
    This sounds trivial, but I cannot find a clear answer (without testing this); and many people are confusing the issue. Here are some examples of confusion. These do not apply to my scenario.
    Active/Active failover is understood to mean only two ASA running multi-contexts. Context 1 is active on ASA1 Context 2 is active on ASA2. They are sharing failover information. Active/Active does not mean two independently configured ASA devices, which do not share failover communication, but do VPN load balancing. It is clear that this latter scenario will work and that both ASA are active, but they are not in the Active/Active configuration definition. Some people are calling VPN load balancing on two unique ASA’s “active/active”, but it is not
    The other confusing thing I have seen is that VPN config guide for VPN load balancing mentions configuring separate IP address pools on the VPN devices, so that clients on ASA1 do not have IP address overlap with clients on ASA2. When you configure ip address pool on active ASA1, this gets replicated to standby ASA2. In other words, you cannot have two unique IP address pools on a ASA Active/Standby cluster. I guess I could draw addresses from external DHCP server, and then do some kind of routing. Perhaps this will work?
    In any case, any experts out there that can answer question? TIA!

    Wow, some good info posted here (both questions and some answers). I'm in a similar situation with a couple of vpn load-balanced pairs... my goal was to get active-standby failover up and running in each pair- then I ran into this thread and saw the first post about the unique IP addr pools (and obviously we can't have unique pools in an active-standby failover rig where the complete config is replicated). So it would seem that these two features are indeed mutually exclusive. Real nice initial post to call this out.
    Now I'm wondering if the ASA could actually handle a single addr pool in an active-standby fo rig- *if* the code supported the exchange of addr pool status between the fo members (so they each would know what addrs have been farmed out from this single pool)? Can I get some feedback from folks on this? If this is viable, then I suppose we could submit a feature request to Cisco... not that this would necessarily be supported anytime soon, but it might be worth a try. And I'm also assuming we might need a vip on the inside int as well (not just on the outside), to properly flip the traffic on both sides if the failover occurs (note we're not currently doing this).
    Finally, if a member fails in a std load-balanced vpn pair (w/o fo disabled), the remaining member must take over traffic hitting the vip addr (full time)... can someone tell me how this works? And when this pair is working normally (with both members up), do the two systems coordinate who owns the vip at any time to load-balance the traffic? Is this basically how their load-balancing scheme works?
    Anyway, pretty cool thread... would really appreciate it if folks could give some feedback on some of the above.
    Thanks much,
    Mike

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