Configuring The Sgtp Service - Cisco ASR 5000 Administration Manual

Enhanced Wireless Access Gateway Configuration
ip access-group <access_list_name> out
#To specify the Firewall-and-NAT policy to use for NAT support:
fw-and-nat policy <fw_nat_policy_name>
#To configure alternative APN to be used by eWAG:
virtual-apn preference <preference> apn <virtual_apn_name> access-gw-address {
<radius_client_ipv4/ipv6_address> | <radius_client_ipv4/ipv6_address/mask> }
end
Notes:
 In the ASR 5000 chassis, virtual APN selection can be based on other criteria apart from Access Gateway
address (
the access gateway address criteria is applicable to the eWAG, which is the RADIUS accounting client from
which the initial Accounting-Start message is received.
Note that for stand-alone eWAG deployments virtual APN is not mandatory.
 For more information on virtual APN in eWAG + GGSN combo deployments, refer to the Enhanced Wireless
Access Gateway Overview chapter.
 In the IP access group configuration, the access list (
the destination context with ECS redirect ACL. See the Access List Configuration section.
 For eWAG, the Firewall-and-NAT policy for subscribers can be specified either in the APN template or in the
ECS rulebase. For selection, the policy specified in the APN configuration has higher priority than the one
specified in the ECS rulebase configuration.

Configuring the SGTP Service

To create and configure the SGTP service use the following configuration:
configure
context <context_name>
sgtp-service <sgtp_service_name>
#To configure GTP-C parameters:
gtpc { bind address <ipv4_address> | dns-sgsn context <context_name> | echo-
interval <echo_interval_seconds> | echo-retransmission { exponential-backoff [ [ min-
timeout <min_retrans_timeout_seconds> ] [ smooth-factor <smooth_factor> ] + ] | timeout
<retrans_timeout_seconds> } | guard-interval <guard_interval_seconds> | ignore response-
port-validation | ip qos-dscp { af11 | af12 | af13 | af21 | af22 | af23 | af31 | af32 |
af33 | af41 | af42 | af43 | be | ef } | max-retransmissions <max_retransmissions> |
retransmission-timeout <retrans_timeout_seconds> | send { common flags | rab-context |
target-identification-preamble } }
#To configure GTP-U parameters:
OL-28188-02
) selection, such as the MSISDN range, RAT type, and so on. However, only
access-gw-address
<access_list_name>
Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄
eWAG Configuration ▀
) specified must be configured in
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