WAAS: ASR for WCCP redirect

Has anyone deployed an ASR for WCCP redirection? How stable is this platform?
Thanks,
DG

DG,
I work for Cisco Systems.
WCCP support on ASR has been there for a while now. Many of our customers do run WCCP on ASR and happy with the stability and performance. As you may know it is a h/w based platform and hence it processes WCCP in h/w. Pl ensure that you are using mask assignment to take advantage of h/w processing on ASR.
thanks
Nat

Similar Messages

  • Mask assignment for wccp redirection in WAEs

    We're tying to understand the mask assignment process better, so we can replace the default mask value of 0X1741 with the correct one as, supposedly, the 0x1741 does not allocate the buckets evenly among the WAEs in a cluster. To that extent, could someone pls refer me to where we could read up on this?
    Thanks.
    _ Greg

    Hey Greg,
    I would suggest going through the below doc. and also there is a mask calculator doc attached here with this for your reference.
    http://www.cisco.com/en/US/docs/ios-xml/ios/ipapp/configuration/12-4t/iap-wccp.html
    Regards,
    Kanwal

  • ACE as cache engine for wccp redirection

    Does anybody know if the ACE 4710 appliance supports WCCP acting as a web-cache engine? I am exausting all possible options, and then some, for deploying a new application networking environment. I just returned from ACE training last week and found myself ramping up to deploy a new ACE.
    I have pretty much exhausted my options for topology. We discussed several different designs in class and I don't like any of them. I have some serious problems with using the ACE as a default-gateway for servers. That options is out due to how other "non application" traffic is handled. Traffic such as RDP from IT support staff, patching from SMS servers, virus dat updates, vulnerability scanning... it all routes to the ACE which has to have static routes... then clients hitting the application VIPs have to be natted so the ACE does not use the static routes and reply directly... it all becomes a very big problem over time.
    Second and third options are one-armed and direct server return... both not suitable for my requirements.
    Now... that leaves me with an option we currently have deployed. That is to use a distribution route-switch (Catalyst 4500 Sup-IV) in the middle. The Cat uses PBR to return http traffic from the web servers back to the ACE. All other traffic follows normal routing table.
    Ok... that works perfect... except PBR is not supported in the Sup-6 engine. Unbelievable... I know. This is a major fly in the ointment for this new deployment.
    Now... there is another protocol that is often used for redirection... WCCP. If the ACE were a wccp web-cache, the router could be configured to redirect ingress http to the ACE. But... the ACE would have to act as a web-cache engine and register with the Cat as a home-router.
    I am sure this option is not an option... but it would be nice. The ACE 4710 appliance has the general processor to do it but it would have to be implemented in software. I'm running A3(1.0) and I cannot find anything related to wccp. Nothing in the command-reference.
    If there are any Cisco developers interested in adding some killer funtionality... this would be it. Wccp can be done in layer-2 as well as layer-3. The Sup-6 supports layer-2 redirection. Since the ACE is generally layer-2 adjacent this would be rather easy to implement. Anyway... food for thought.

    I just would like to mention that you could have ACE in bridge mode inserted between your servers and the gateway (4500).
    All traffic will go through ACE but no need for nating and no statc routes (just one default route pointing to the 4500).
    The only problems would be if you exceed the BW of the 4710 with all your traffic.
    Regarding the WCCP support for the 4710 this is not currently in our roadmap.
    Ask your cisco account team to introduce the request.
    Thanks,
    Gilles.

  • WCCP Redirect list ACL mask for WAAS

    Good day,
    I would like to conform if the following would be correct to implement for WCCP redirection list on 6500. We have over 800 branches and we also need to manage the intra-server traffic in the Data Center which we do not want to be re-directed.
    ip access-list extended WCCPLIST-61
    permit tcp 10.112.0.0 0.0.31.255 any
    ip access-list extended WCCPLIST-62
      permit tcp any 10.112.0.0 0.0.31.255
    So, as an example, would these masks work for us, as the number of entries otherwise would be exhaustive.
    Just want to confirm that the mask in the ACL doesn't have to match exactly.
    Thanks in advance.

    Hi Zach,
    Thanks for the response and confirmation.
    I was wanting to make sure that it is not required to have the masks match the source masks, resulting in the exhaustive list (operational nightmare).
    A quick question on the ACL for WCCP redirect-list. Should we not see hits on specific entry's (e.g.permit tcp 10.113.9.0 0.0.0.31 any for the 61 redirect list, and the same for the permit tcp any 10.113.9.0 0.0.0.31 for the 62 redirect list).
    If we don't, no traffic? We see flows on the branch WAE, although very few (not many users), but no hits on the ACL on the DC 6500. Is this due them being handled in hardware maybe, TCAM's?
    Any input would be apprecited.
    Thanks again.
    Paul.

  • Does introducing WCCP redirect for WAAS disrupt Netflow information?

    Before installing WAAS and WCCP redirect on some 6500 interfaces in our data center, those interfaces showed Netflow flows for users at a remote location accessing servers at our data center. Now with WCCP redirecting that traffic to the WAEs, I notice the only netflow flows for that remote location are UDP flows and some ICMP stuff.
    Is this an unintended consequence of installing WAAS - that netflow statistics are going to be skewed by not showing flows that are now accelerated?

    I believe your problem may be due to the fact that you are redirecting http
    based traffic per the ACL configuration. The sup720 uses wccp v2 as a default
    version,however, the Sup720 does NOT support the hardware-based redirection for the TCP port 80 when we enable wccpv2.
    http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/wccp.
    htm#wp1017009
    Support for Non-HTTP Services:
    WCCPv2 allows redirection of traffic other than HTTP (TCP port 80 traffic), including a variety of UDP and TCP traffic. WCCPv1 supported the redirection of HTTP (TCP port 80)traffic only. WCCPv2 supports the redirection of packets intended for other ports, including those used for proxy-web cache handling, File Transfer Protocol (FTP) caching, FTP proxy handling, web caching for ports other than 80, and real audio, video, and telephony applications.

  • Wccp redirection for waas on same platform as wccp for websense?

    just wondering if anyone knows if a Cisco router or switch can handle wccp redirection enabled for both waas and some other web content filtering appliance using a different service group?
    seems like the priority value would come into play determining which service group gets handled first?
    we currently do WCCP for WaaS on our 3945s.
    I am going to advocate to my customer that we separate this out for CPU load issues, config complexity issues, IOS issues, etc... but the question is going to come up - "can we do WCCP for different applications on our Catalyst 3750 core switch, or our 3945 WAN routers?"
    Thanks,
    Paul

    Hi Paul,
    Yes, it's technically possible to have WCCP redirection for several services even in those devices that don't support setting the priority. However, in this case, both WAAS and Websense need to redirect HTTP traffic, and that's what makes things complicated.
    Assuming you first want to send the traffic to Websense and then to WAAS, I would recommend doing the WAAS redirection only on the WAN link (with one service inbound and the other outbound). You can then configure Web-cache redirection inbound on the client vlan and, a service for the return traffic (I'm not sure if this is required for websense), inbound on the interface where the WAE is connected (with a redirect-list to match only the return direction)
    Even if it's possible to have both redirections in the same device, if possible, I would strongly suggest you to either use different devices for the redirection or to make them mutually exclusive (for example, not sending HTTP to WAAS), otherwise, if you make a small mistake with the configuration, you can end up with a redirection loop.
    Regards
    Daniel

  • Router WCCP redirect ACLs for WAAS

    Since WAAS accelerates TCP connections only, would it be more efficient to code my router WCCP redirect ACLS for protocol TCP instead of all IP traffic between my source and dest subnets I want redirected?

    Greg,
    The protocol (TCP) is an attribute of the WCCP service group, so using IP in your ACL is fine.
    Regards,
    Zach

  • WAAS - WCCP redirect inbound

    Hello Everyone,
    I notice on our 1841 router running version 12.4(22)T, the wccp redirect inbound method does not process through CEF. It will only process it through an outbound redirection. The 61 redirect inbound is applied to the subinterface on fas 0/0.
    Any ideas ?
    interface FastEthernet0/0.999
    description ****Dublin User Vlan****
    encapsulation dot1Q 999 native
    ip address x.x.x.x 255.255.255.192
    ip helper-address 134.65.181.11
    no ip redirects
    no ip proxy-arp
    ip wccp 61 redirect in
    ip wccp 62 redirect out
    ip flow ingress
    no ip mroute-cache
    service-policy input DBN_LAN

    You must configure these devices to use WCCP Version 2 instead of WCCP Version 1 because WCCP Version 1 supports web traffic (port 80) only. When you enable the TCP promiscuous mode service (WCCP Version 2 services 61 and 62) on a WAE and a router, you do not need to enable the CIFS caching service (WCCP Version 2 service 89) on the router or WAE.
    http://www.cisco.com/en/US/docs/app_ntwk_services/waas/waas/v401/quick/guide/wsqcg401.html#wp1357416

  • ASR1002 throughput degradation when wccp redirect-list is changed

    We have two ASR 1002's going to 2 different WAN service providers, and two 7371 WAE load balanced by mask assignment. When we change the ACL (adding or removing lines) from our wccp redirect-list, the throughput on interfaces applied to the wccp service-groups is degraded to almost no traffic passing, until we completely remove wccp service group from the global configuration and then reapply. Then traffic throughput on the interface goes back to normal.
    Our ACL defined in the redirect list specifies our specific networks on our WAN that have WAE's and need the redirection. All other networks are denied implicitly. We need to regularly change this ACL, and this service interruption is a major issue. This was not an issue before moving to the ASR platform from 7206's.
    At TAC's request we have upgraded our IOS version to 15.1(3)S4 and that did not make any difference. Does anyone know why this occurs and if there is a way to work around this other than removing wccp configuration and adding back, every time the ACL needs to be modified?
    As a side note to this... We have recently added riverbed appliances, and created separate service groups with separate redirect-lists. The exact same behavior occurs on the ASR 1002 when the ACL for the riverbed's redirect list is altered.

    Thank you very much for sharing that information.  It is great to hear verification that the mask assignment change did resolve your problem.   That is the latest resolution that TAC has recommended, but we have to restart the WCCP service on all redundant edge routers to be able to implement this, so planning the outage window is taking some time.   We've been told that TAC will set this up in a lab and test for us by our Cisco SE.  We're hoping to get verfication that this actually resolves the problem before we take the outage.   
         If you could, can you tell me if this resolved the issue 100% or do you still have any performance issues when making a change to your WCCP ACL going to your bluecoat equipment?    We may also need to implement this in our redirects to BlueCoat from our Nexus.  Do you happen to have a link to how to make this change in Bluecoat?   Thanks again!

  • Ip wccp redirection direction at ethernet and serial interface.

    hi all.
    commonly, we use 'ip wccp 62 redirect in' at serial interface to grap packet for sending cisco waas.
    but some document is mentioned that 'ip wccp 62 redirect out' ethernet interface facing data center side.
    I guess, there is same meaning, I think that It's better to apply 'ip wccp 62 redirect in' at serial interface due to router performance. Right?
    Can you explain clarify for me?
    Thank you.

    You are correct redirect in is less cpu intensive as compared to redirect out
    WCCP redirection can be configured to occur as packets enter a router or switch interface (inbound, or ingress, redirection) or as they are beginning to leave a router or switch interface (outbound, or egress, redirection).
        * Inbound redirection - the WCCP process inspects traffic to find packets that should be optimized before the packets enter the router or switch forwarding/routing selection process.  Inbound redirection is less CPU intensive than outbound redirection (when using process or other SW based switching).
        * Outbound redirection - the WCCP process inspects traffic to find packets that should be optimized as the packets are ready to leave a router or switch interface, after the packet has gone through the router or switch forwarding/routing selecting process.  Outbound redirection is more CPU intensive than inbound redirection.
    Thanks
    -Smita

  • Apply WCCP redirect to logical or physical interface?

    If there is a logical subinterface configured under its physical interface (for example serial0/0/0.100 for routing), I should apply WCCP redirect (ip wccp 62 redirect in) to the logical interface, not the physical interface. Is that correct?
    Thanks

    Yes. You apply WCCP redirect to subinterface if you are using sub interfaces.
    Regards.
    PS: Please mark this Answered, if it answers your question.

  • Does wccp redirect break routing protocol?

    This may be a dumb question to ask, sorry i don't have equipment to test it at this moment.
    If wccp redirect is configured on an interface running routing protocol (such as eigrp or ospf), will this redirect the "unicast" ospf database or eigrp topology update to WAAS?  and/or will this also redirect ospf & eigrp "multicast" update which maintains neighbor relationship to WAAS?
    Should this type of traffic be denied on wccp redirect-list?
    Thanks

    Hi Joe,
    Since WAAS normally uses TCP promiscuous mode services, based on service group number 61 and 62 - you'll only get TCP redirected ... and neither OSPF nor EIGRP runs on top of TCP, so don't worry.
    If you run a TCP based routing protocol like BGP, it will get redirected.
    Later versions of WAAS don't, by default, try to optimize on BGP, as it has given some problems in the past due to sequence number manipulation.
    Best Regards
    Finn Poulsen

  • WCCP Redirection on a GRE Tunnel

    For some of our smaller branch offices we run GRE tunnels through a secured IPSec VPN connection over the Internet. Will WCCP redirect work if configured on the GRE Tunnel interface?

    Hi,
    Yes, it will work.
    Regards,
    Erik
    Sent from Cisco Technical Support iPad App

  • SRE External Gig port for WCCP traffic?

    Has anyone been successful with using the external Gig port on the SRE modules for WCCP traffic?  Has anyone tried it?
    I'd like to reduce the CPU on my ISR-G2 routers that have the SRE modules running WCCP GRE.  I'd like to use the external gig port on the SRE module for the WCCP traffic, which will allow me to use WCCP L2.  Is this even feasible?  Or maybe I just need to add WCCP L2 on an SRE as a New Feature request to Cisco?
    According the to Cisco documentation....
    The external service-module interface can be used to monitor LAN traffic. You can also select the external interface as the management interface for the SM. The external interface cannot be used for downloading applications.
    Visible only to the SM software on the Cisco SM-SRE, the external service-module interface is the Gigabit Ethernet interface connector on the Cisco SM-SRE faceplate. The external interface supports data requests and data transfers from outside sources, and it provides direct connectivity to the LAN through an RJ-45 connector.

    Tammy,
    What is preventing you from configuing WAAS on SRE with L2 WCCP / Mask assignment via the internal interface?   This is totally feasible.
    If you are trying to decrease CPU utilization on your router, don't expect switching from GRE to L2 to make a drastic difference.  The ISR G2 is a software based platform, as such WCCP (whether L2 or GRE) is processed by the CPU with CEF assistance. 
    True removing the GRE encapsulation will save some processing overhead, but in the end it's the PPS (packets per second) your router is handling that's driving the CPU.
    Remember when you add WCCP / WAAS to the flow it's no longer packet in/ packet out on the router.  Compressed data in on WAN, out to WAAS, uncompressed from WAAS back to Router, out on the LAN, then the reverse... uncompressed data on the LAN in to the router, out to WAAS, compressed from WAAS out to the router, then out on the WAN.  So depending on the compression observed you will see > 2x the amount of traffic being processed by the router. 

  • Wccp redirect V2

    Are all Cisco ISR's support wccp redirect V2, included 19xx and 29xx routers?
    Thanks,
    Eric

    Hello,
    1. "ip wccp web-cache redirect in"
    It would work if you squid proxy have another default gateway to internet.
    Otherwise the traffic from the SQUID is also forwarded. You have to use different interfaces for users and squid. On sabinterfeyse vlan SQUID you should not use a configuration wccp
    2. Web-cache permit only http. You must configuring Dynamic WCCP.
    some example:
    in global:
    ip wccp 120 redirect-list 120
    access-list 120 remark REDIRECTION_CRITERIA
    access-list 120 deny   ip host 192.168.1.2 any
    access-list 120 permit tcp 172.16.1.0 0.0.0.255 any eq www
    access-list 120 permit tcp 172.16.1.0 0.0.0.255 any eq 443
    access-list 120 permit tcp 172.16.2.0 0.0.0.255 any eq www
    access-list 120 permit tcp 172.16.2.0 0.0.0.255 any eq 443
    access-list 120 permit tcp 172.16.3.0 0.0.0.255 any eq www
    access-list 120 permit tcp 172.16.3.0 0.0.0.255 any eq 443
    access-list 120 deny   ip any any
    on interface:
    ip wccp 120 redirect in
    See link below for more information
    http://www.cisco.com/en/US/docs/ios-xml/ios/ipapp/configuration/12-4t/iap-wccp.html#GUID-5E9AE273-1AFD-4598-9325-85F8C822D168
    Best regards

Maybe you are looking for