Cisco ACE and firewall design

Guys,
If I have servers protected behind a firewall and I need to load balance some servers , where should I place the ACE?
Sent from Cisco Technical Support iPad App

Hi,
With one-arm i believe the question is where you want to place the firwall. As long as the client is able to reach the VIP and server replies back to ACE i dont see any problem with this design.
Firewall ---------Switch ---------------- Load Balancer ---
As you know with one-arm requires a source NAT and might not be a good fit for application that are using the source IP address to track client usage patterns. PBR avoids this problem but adds other considerations, such as routing complexity, asymmetrical routing for non-load-balanced flows, and VRF support; PBR is not available on VRFs.
Regards,
Siva

Similar Messages

Urgent!!! Cisco ACE and asymetric routing assistance needed

I am wondering if someone can give me pointers on the cisco ACE
and asymetric routes. I've attached the diagram:
-Cisco IOS IP address is 192.168.15.4/24 and 4.1.1.4/24
-Firewall External interface is 192.168.15.1/24,
-Firewall Internal interface is 192.168.192.1/24,
-F5_BigIP External interface is 192.168.192.4/24,
-F5_BigIP Internal interface is 192.168.196.1/24 and 192.168.197.1/24,
-host_y has IP addresses of 192.168.196.10/24 and 192.168.197.10/24,
-Checkpoint has static route for 192.168.196.0/24 and 192.168.197.0/24
pointing to the F5_BigIP,
-host_y is dual-home to both VLAN_A and VLAN_B with the default
gateway on host_y pointing to VLAN_A which is 192.168.196.1,
-host_x CAN ssh/telnet/http/https to both of host_y IP addresses
of 192.168.196.10 and 192.168.197.10.
In other words, from host_x, when I try to connect to host_y
via IP address of 192.168.197.10, the traffics will go through VLAN_B
but the return traffics will go through VLAN_A. Everything
is working perfectly for me so far.
Now customer just replaces the F5_BigIP with Cisco ACE. Now,
I could not get it to work with Asymetric route with Cisco ACE. In
other words, from host_x, I can no longer ssh or telnet to host_y
via IP address of 192.168.197.10.
Anyone knows how to get asymetric route to work on Cisco ACE?
Thanks in advance.

That won't work because ACE uses the vlan id to distinguish between flows.
So when the response comes back on a different vlan, ACE can't find the flow it belongs to and it drops it.
Even if we could force it to accept the packet, ACE would then try to create a new flow for this packet and it will collide with the flow already existing on the frontend.
You would need to force your host to respond on the same vlan the traffic came in.
This could be done with client nat on ACE using different nat pool.
Gilles.

VPC / Cisco ACE and the Nexus 2K and 5K

Hi all,
So we have a test environment that looks like the following. We have 2 5K's switch 1 and switch 2. Switch 1 has two 10gb connections downstream to a 2K and switch 2 has two 10Gb connections downstream to the other 2K. We have a few servers that are multi-homed with LACP and VPC via the 2Ks and it works a treat.
We have our Cisco ACE 01, ports 1 and 2 going to one of the 2K's and we have ports 3 and 4 going to the other 2K, ACE02 ports 1 and 2 going to one of the 2K's and we have ports 3 and 4 going to the other 2K. If i enable VPC and none LACP based etherchannel i cannot get the ACE's talking to each other, but looking at the VPC status its all healthy and up.
Has anyone managed to multi-home the ACE between two 2K's with VPC successfully?
If I disable the links so each ACE only has links upstream in a traditional port-channel and not cross connected, the ACE's can see each other with no issues.
Cheers

Doh.. so we had a cable patching issue in the end. Let this be a lesson to all networking chaps - always check the basics first! Now we have patched the cables as per design the VPC has been established and works.
Now we have VPC is working we are simulating link failures. When we restore a shutdown physical port within the port-channel/VPC that sits between the 2K and ACE (simulating a port failure) the ACE's lose sight of each other for about 10 seconds and causes an short outage until the port is up and up. The logs on the ACE show 'the Peer x.x.x.x is not reachable. Error: Heartbeat stopped. No alternate interface configured' but the VLAN for the FT interface is carried over all four ACE NIC's that are multi-homed to two 2K's... very strange, i would not expect this, it's like the MAC addresses for the FT interface are waiting to be timed out on the 2K until they are switched on another interface within the port-channel and VPC.
Anyone seen this before?

Cisco ACE and license upgrades

Hi,
So we have a virtual ACE carved into Contexts with 0.5 Gb license.
I'm planning on taking this up to a 1Gb license but I’m concerned regarding the resource-class allocations.
I currently allocate a gold class of 20% for customers that require 100mb of through put which works quite well. So 20% of 500mb is 100mb.
When I upgrade to a 1Gb license the resource-class's will need changing right? So gold becomes 10%, with 10% of 1000Mb is a 100Mb.
Is how you normally tackle the license upgrades in a virtualised environment.
Any comments would be appreciated
Cheers

Once you upgrade the license, of course the capacity of device increases and hence you can tweak the resource allocation as per your requirement. It should be simple:)

Cisco ACE and IIS Virtual Directories

Hello All,
I have the Load Balancing between to servers working correctly except for on thing. If I enter www.domainname.com\apps into the browser it will returns a 302 page, but if I enter www.domainname.com\apps\ the page will Pull up. Is there a way for the ACE to add the \ after the Virtual Directory?

Here is an example of the configuration:
rserver host NET01
ip address 10.0.20.24
inservice
rserver host NET02
ip address 10.0.20.25
inservice
serverfarm host NET-Farm
predictor leastconns
rserver NET01 80
rserver NET02 80
    inservice
parameter-map type http HTTP_PARAMETER_MAP
persistence-rebalance
sticky ip-netmask 255.255.255.255 address source NET-IP
replicate sticky
serverfarm NET-Farm backup Maintenance
class-map match-all NET
2 match virtual-address 10.0.20.21 tcp eq https
policy-map type loadbalance first-match NET
class class-default
    sticky-serverfarm NET-IP
    insert-http x-forward header-value "%is"
policy-map multi-match int71
class NET
    loadbalance vip inservice
    loadbalance policy NET
    loadbalance vip icmp-reply active
    nat dynamic 6 vlan 71
    appl-parameter http advanced-options HTTP_PARAMETER_MAP
interface vlan 71
no icmp-guard
nat-pool 6 10.0.20.21 10.0.20.21 netmask 255.255.255.255 pat

Slow connection in one server if accessing through Cisco ACE

Hi,
Good day, Can someone help me on my problem? I have 3 servers, server1, server2 and server3. When one pc accessing the server 3 application via Cisco ACE, it experienced a slow connection but when direct access without Cisco Ace, it's fast. The connection of this PC through cisco ace and direct access have no issue.
What need to do in my configuration? Below is my configuration
logging enable
logging timestamp
logging trap 7
logging buffered 7
logging monitor 7
logging host 167.81.126.5 udp/514
logging host 137.55.152.147 udp/514
resource-class SG_01
limit-resource all minimum 0.00 maximum unlimited
limit-resource sticky minimum 10.00 maximum equal-to-min
boot system image:c4710ace-mz.A3_2_0.bin
login timeout 30
peer hostname singapore-ace2
hostname singapore-ace1
interface gigabitEthernet 1/1
channel-group 14
no shutdown
interface gigabitEthernet 1/2
channel-group 14
no shutdown
interface gigabitEthernet 1/3
channel-group 14
no shutdown
interface gigabitEthernet 1/4
channel-group 14
no shutdown
interface port-channel 14
description ISOLAN-ACE-TRUNK
ft-port vlan 99
switchport trunk native vlan 1
switchport trunk allowed vlan 12,14,112
no shutdown
clock timezone SGT 8 0
ntp server 137.55.152.1
context Admin
member SG_01
access-list ALL line 8 extended permit ip any any
access-list ALL line 9 extended permit icmp any any
ip domain-name ysn.psg.philips.com
probe http singapore_01
description This probe used to monitor application url-app-script
interval 5
passdetect interval 5
request method get url /insiteserverstatus/insiteserverstatus.aspx
expect status 200 200
open 1
probe http singapore_02
description This probe used to monitor IIS-login-page
interval 5
passdetect interval 5
request method get url /InSiteLumiledsApplication/
expect status 200 200
open 1
probe icmp uplink
description This probe used in conjunction with ft track host
interval 2
faildetect 2
passdetect interval 3
parameter-map type connection PARAM_L4STICKY-IP
exceed-mss allow
rserver host sggysnysn1ms013
ip address 137.55.152.135
inservice
rserver host sggysnysn1ms014
ip address 137.55.152.136
inservice
rserver host sggysnysn1ms018
ip address 137.55.152.145
inservice
serverfarm host PLI9058
probe singapore_01
probe singapore_02
rserver sggysnysn1ms013
    inservice
rserver sggysnysn1ms014
    inservice
rserver sggysnysn1ms018
    inservice
sticky ip-netmask 255.255.255.255 address both SG_GROUP_01
timeout 720
replicate sticky
serverfarm PLI9058
class-map type management match-any HTTPS-ALLOW_CLASS
class-map match-all L4STICKY-IP_141:ANY_CLASS
2 match virtual-address 137.55.152.141 any
class-map type http loadbalance match-any NO_MS018
50 match source-address 137.55.155.31 255.255.254.0
class-map type management match-any SSH-ALLOW_CLASS
2 match protocol ssh source-address 167.81.124.0 255.255.255.192
3 match protocol ssh source-address 167.81.126.0 255.255.255.192
class-map type management match-any remote_access
2 match protocol xml-https any
3 match protocol icmp any
5 match protocol ssh any
6 match protocol http any
7 match protocol https any
8 match protocol snmp any
policy-map type management first-match remote_mgmt_allow_policy
class remote_access
    permit
policy-map type loadbalance first-match L7PLBSF_STICKY-NETMASK_POLICY
class class-default
    sticky-serverfarm SG_GROUP_01
    insert-http X-Forwarded-For header-value "%is"
policy-map multi-match PLI9058-VIPs_POLICY
class L4STICKY-IP_141:ANY_CLASS
    loadbalance vip inservice
    loadbalance policy L7PLBSF_STICKY-NETMASK_POLICY
    loadbalance vip icmp-reply
    connection advanced-options PARAM_L4STICKY-IP
interface vlan 12
description Client-side vlan
bridge-group 1
no normalization
mac-sticky enable
access-group input ALL
access-group output ALL
service-policy input PLI9058-VIPs_POLICY
no shutdown
interface vlan 14
ip address 137.55.152.236 255.255.255.248
peer ip address 137.55.152.237 255.255.255.248
service-policy input remote_mgmt_allow_policy
no shutdown
interface vlan 112
description Server-side vlan
bridge-group 1
no normalization
access-group input ALL
access-group output ALL
nat-pool 1 137.55.152.141 137.55.152.141 netmask 255.255.255.192 pat
no shutdown
interface bvi 1
ip address 137.55.152.189 255.255.255.192
alias 137.55.152.188 255.255.255.192
peer ip address 137.55.152.190 255.255.255.192
description Bridge-Group 1 Virtual Interface
no shutdown
ft interface vlan 99
ip address 192.168.1.1 255.255.255.252
peer ip address 192.168.1.2 255.255.255.252
no shutdown
ft peer 1
heartbeat interval 100
heartbeat count 10
ft-interface vlan 99
ft group 1
peer 1
priority 150
peer priority 50
associate-context Admin
inservice
ft track host test1
track-host 137.55.152.234
peer track-host 137.55.152.235
peer probe uplink priority 50
probe uplink priority 50
ip route 0.0.0.0 0.0.0.0 137.55.152.233

Hi Earsdale,
All the three servers are using the same configuration, so, I'm afraid it's not possible to give you a simple answer. You will need more troubleshooting.
I would recommend you to start by checking the differences between the servers because one of those differences is certainly causing the failure.
Also, it would be helpful to get traffic captures on the TenGig interface of the ACE to compare the behavior of the connection when going to the different servers, as well as the differences when being load-balanced vs accessing the server directly.
If you need help with this troubleshooting, you can always open a TAC service request
Regards
Daniel

TS2709 I have AppleTV and Ipad2 running VJay app to my TV over a private cisco router disabled firewall but I keep loosing the video on my TV after a few minutes what can I do?

I have AppleTV and Ipad2 running VJay app to my TV over a private cisco router disabled firewall but I keep loosing the video on my TV after a few minutes what can I do?

I also get this problem on my iPad, so probably not related to the AppleTV. On the iPad I restarted Airport Extreme this time, and then the iPad saw my Home Sharing.
So to recap, restarting the router or Airport Express allowed the iPad and AppleTV to see Home Sharing. Restarting AppleTV also allows AppleTV to see Home Sharing.
So does anyone have any idea?
Thanks

Cisco CSS and ACE study guide

Hi,
Im ready to kick start Cisco CSS and ACE load balancers. I found that 642-972 DCASD and 642-975 DCASI are the relevant exams for that. But, they are expired now. And, I couldn't even find the old materials for those. Could you please anyone assist me in getting started with this?

Hi Kanwal,
Thanks for your reply. BTW, wasn't there any specific study guides for 642-972 DCASD and 642-975 DCASI from Cisco? The reason behind this question is, I want to go step by step starting from how load balancing works, the basics and terminologies of load balancing and its various options and operations etc. I have been working with Network Security and just stepping in to DC operations.

Dear All, I'm using Cisco ASA 5505 Firewall and I want the email alert from my Firewall if the CPU increase more than 70 %. Is it possible, Please help me. Thanks Vijay

Dear All,
I'm using Cisco ASA 5505 Firewall and I want the email alert from my Firewall if the CPU increase more than 70 %. Is it possible, Please help me.
Thanks
Vijay

Hi Vijay,
If can be done but you need any network management software. I personally dont think you can ask your ask to send mails. ASA can trigger alert to a SNMP configured server which will intern send mail to you
HTH,

I have two facetime users, both connecting to our enterprise wireless network (Cisco WCS) and they can't make a facetime connection from IPAD to IPAD. Are there any apple protocols or other settings that need to be enabled on WCS? No firewall involved.

I have two facetime users, both connecting to our enterprise wireless network (Cisco WCS) and they can't make a facetime connection from IPAD to IPAD. Are there any apple protocols or other settings that need to be enabled on WCS? There is no firewall inbetween the two connections, as this is all on our internal network.
Both devices can connect to the network, but when they try to talk to each other they can't make the connection.
Thanks.

If anyone ever comes across this and has the same issue, here's what I did to fix it:
My Linksys router has a Network Mode setting, and I had to change it from "Mixed" to "Wireless-G only". (I would've used N but one of the NICs in my house is too old to support it.) Anyway, after making this change, Facetime works fine on the phone. Hope this helps someone else!

Cisco ACE Module with Bluecoat Cache Proxy, Transparent and spoofing client IP

Hello Dears,
I'm trying to implement Cache loadbalancing through Cisco ACE Module.
I have 2 Bluecoat cache proxies, when i do configure transparent proxy without spoofing client IP, everything work properly, but when I enable spoofing client IP (reflect client IP address), clients are not able to access internet, although they are going to cache servers, I can see their sessions.
I'm afraid that I have a problem in the returned traffic PBR.
can anyone help please.
Thanks

Hi Ibrahim
I ahve reviewed the config. The ACE config is all god but I do see some issue with the switch side. If you are doing ip spoofing, then "match ip address" in pbr should be the client ip address. However, what you did is ip address between the ACE and MSFC. Try to configure the test client ip address into the below access-list.
msfc---vlan 265---ACE--vlan 264----CE farm
interface vlan 265
description Interface_With_MSFC_SUBS_2_INTERNET
ip address 168.168.1.52 255.255.255.248
access-group input PERMIT_ALL
service-policy input L3L4_PM
no shutdown
ip route 0.0.0.0 0.0.0.0 168.168.1.50
ip access-list extended HSDPA_2_CACHE
permit tcp 168.168.0.0 0.0.255.255 any eq www <<<-- wrong
ip access-list extended Internet_2_CACHE
permit tcp any eq www 168.168.0.0 0.0.255.255 <<<---wrong
interface Vlan 265
description Interface_With_ACE
ip address 168.168.1.50 255.255.255.248
route-map INTERNET_2_HSDPA permit 10
description "PBR for Response HTTP Traffic"
match ip address Internet_2_CACHE
set ip next-hop 168.168.1.52
route-map HSDPA_2_INTERNET permit 10
match ip address HSDPA_2_CACHE
set ip next-hop 168.168.1.52
regards
Andrew

T3 Oracle´s proprietary tunneling protocol and Cisco ACE

Does anybody know if it is possible to load balance the T3 Oracle´s proprietary tunneling protocol supported by Oracle Weblogic with Cisco ACE?
TIA,
Claudio Uemura

HI Claudio,
I don't know much about T3 protocol, in short you can load balance almost anything really, the issue becomes to how granular and if you can do any intelligent inspection besides source and dest ip and if there are multiple different connections on different ports. These last points sort of decide whether it's worth it.
- If you find the specifics about the connection ( port, type of protocol and type of connection ( long-lived or short lived) you should be able to setup a basic rule to test. A sniffer trace will give you the most information if oracle website does not explain T3 in detail.
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http://forums.oracle.com/forums/thread.jspa?threadID=706909
I would think it's defintely worth looking at both options
cheers,
Chris

Cisco ace mibs for concurrent connection on real and virtual servers

i have loaded cisco provided mibs for cisco ace into nms but i am not able to fetch the details from ace appliance 4710.where can i find IODs for this.
would really appreciate if anyone can help me regarding this

Hi Manohar,
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/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Normale Tabelle";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
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font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
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ftp://ftp.cisco.com/pub/mibs/v2/CISCO-ENHANCED-SLB-MIB.my
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/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Normale Tabelle";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
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table.MsoNormalTable
{mso-style-name:"Normale Tabelle";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
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Best Regards,
Achim

TACACS and Cisco ACE Load Balancers authentication ?

Is there a need to have user accounts locally on the Cisco ACE Load Balancers as well as the User accounts on TACACS where it is being authenticated ?
Many thanks
Florrie

Yes.
http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA3_1_0/configuration/security/guide/aaa.html#wpmkr1517596

Cisco CSS11503 and ace question

we are migrating from css11503 to ace. is there a utility to migrate the config to ace? we have 9000 lines of config on css11503. also is there a white paper which compares css with ace and csm?

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Cisco ACE and firewall design

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