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Cisco Bug: CSCut40341 - Line protocol on SM-X-1T3/E3 configured for frame-relay remains down

Last Modified

Feb 15, 2018

Products (1)

  • Cisco 4000 Series Routers

Known Affected Releases


Description (partial)

Line protocol on Serial DS3 interface configured for frame-relay on SM-X-1T3/E3 card goes down due to received punt packets not incrementing.
The interface however keeps sending frame-relay LMI's but since it is not able to punt received packets, the interface does not show any LMI's being received.

In the debugs we see MYSEEN counter incrementing but YOURSEEN counters does not increment.

Serial1/0/0(out): StEnq, myseq 2, yourseen 0, DTE down
datagramstart = 0x7FD45F5F0B5C, datagramsize = 13
FR encap = 0xFCF10309
00 75 01 01 00 03 02 02 00 

Serial1/0/0(out): StEnq, myseq 3, yourseen 0, DTE down
datagramstart = 0x7FD45F61949C, datagramsize = 13
FR encap = 0xFCF10309
00 75 01 01 00 03 02 03 00 


In "sh plat hard qfp act infra punt statistics interface <QFP handle >" output, we see the Received Punt Packet DO NOT increment:

Per Interface Punt-Inject statistics

  received punt packets      393231

Issue is seen when Serial interface is configured for Frame-relay as the Layer 2 protocol.

QoS configured with Voice , video & data traffic
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