Operational Defect Database
BugZero found this defect 181 days ago.
Data sources
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F5 | 1398809
TMM can not process traffic on Cisco ENIC
Last update date:
4/25/2024
Affected products:
BIG-IP
BIG-IP LTM
Affected releases:
11.6.0
11.6.1
11.6.2
11.6.3
11.6.3.1
11.6.3.2
11.6.3.3
11.6.3.4
11.6.4
11.6.5
11.6.5.1
11.6.5.2
Fixed releases:
No fixed releases provided.
Description:
- TMM cannot process traffic - Within '/var/log/tmm', there is the following log line rte_enic_pmd: Rq 0 Scatter rx mode not being used - 'tmctl -d blade tmm/xnet/dpdk/stats' stat table shows a large (several 10000) for 'mbuf_inuse' and 'frag_inuse', and 'mbuf_alloc_fail' is an extremely large count (in the scale of millions) and continuously increasing ... Impact ... Traffic disrupted as TMM is not able to receive nor send packets. ... Conditions ... - TMM is using Xnet-DPDK drivers - BIG-IP is connected to a Cisco ENIC card In addition to the above, one or both of the following a) Only 1 RX queue available b) MTU <= 1920 By default, TMM will set MTU to 1500 for ENIC. ... Workaround ... Both of following must be done: 1) Configure ENIC to have 2 or more RX queues available 2) Create a file '/config/tmm_init.tcl' containing the following line: ndal mtu 9000 1137:0043 ... Fix Information ... None
