Cisco Bug: CSCul38052 - SGSN and GGSN establishing Direct Tunnel, but still shows NORMAL
Dec 25, 2016
- Cisco ASR 5000 Series
Known Affected Releases
Symptom: SGSN and GGSN establishing Direct Tunnel, but still shows NORMAL Conditions: SGSN: 14.0 (51375) GGSN: 14.0 (51375) 1. From mon sub on SGSN, we can see the Update_PDP_context from SGSN to GGSN with direct tunnel information, including the user plane IP from RNC on GSN Address II. GGSN responds with GTP_Request_Accepted. But when check "show gtpc full imsi xxxx" on GGSN, it still shows GTP-U Tunnel Establishment: Normal 2. on SGSN, from "show gmm-sm statistics verbose", we can see the following: Session Statistics: Attached Subscribers: Total Attached: 5733 3G Attached: 3458 2G Attached: 2275 Home Subscribers: Total Home: 5721 3G Home: 3455 2G Home: 2266 Visiting National Subscribers: Total-Visiting-National: 1 3G-Visiting-National: 1 2G-Visiting-National: 0 Visiting Foreign Subscribers: Total-Visiting-Foreign: 11 3G-Visiting-Foreign: 2 2G-Visiting-Foreign: 9 Activated Subscribers: Total Activated: 4077 3G Activated: 2671 2G Activated: 1406 Gn Interface: 2671 Gn Interface: 1405 Activate PDP Contexts: Total Actv PDP Ctx: 4107 3G-Actv Pdp Ctx: 2685 2G-Actv Pdp Ctx: 1422 Gn Interface: 2685 Gn Interface: 1421 Total Actv Pdp Ctx with Direct Tunnel: 2275 We can see 2685 subscribers with Active PDP, but only 2275 with direct tunnel (and with only 12 roaming subscribers). For home subscribers, apn should be internet or singleapn and it has configured direct tunnel on the apn-profile.
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