[c-nsp] Multiple flow-masks

[Robert Williams]

Hi,

Unfortunately we use Netflow for an automated system we have (it doesn't need to accurately record everything, just the highest number of flows / packets etc). So I cannot just remove it, however I have made some progress.

I've tracked it down to the problem actually being with the IPv6 netflow / masks. With all netflow removed I am able to add my policy-map in and it works. Then by adding netflow commands back in I can get everything back except the command:

 mls flow ipv6 <any command>

So even if I specify:

 mls flow ipv6 destination

I still get:

%FM-2-FLOWMASK_CONFLICT: Features configured on interface <name> have conflicting flowmask requirements, traffic may be switched in software

At this point in time, with my policy attached and working I'm showing:

                 Flowmasks:   Mask#   Type        Features
                      IPv4:       0   reserved    none
                      IPv4:       1   Intf Ful    FM_QOS Intf NDE L3 Feature
                      IPv4:       2   Dest onl    FM_QOS             <--- My policy (V4)
                      IPv4:       3   reserved    none

                      IPv6:       0   reserved    none
                      IPv6:       1   Intf Ful    FM_IPV6_QOS
                      IPv6:       2   Dest onl    FM_IPV6_QOS        <--- My policy (V6)
                      IPv6:       3   reserved    none

The command "mls flow ipv6 <anything>" just plain refuses to go active in the config, so if I re-send it I get the error shown above every time.

The flowmasks are correctly showing "Intf Full" and "Dest only" in slots 1 and 2 respectively. So, why does my netflow request not attach alongside either one of them when it's looking for the same mask as is already active in those slots?

The policy itself is working correctly at this point, but I cannot enable IPv6 netflow.

Can anyone help?

Robert Williams
Backline / Operations Team
Custodian DataCentre
tel: +44 (0)1622 230382
email: Robert at CustodianDC.com
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