Manual Chapter :
SIP ENUM Resolution Capability using
iRule
Applies To:
Show Versions
BIG-IP LTM
- 17.1.0, 17.0.0, 16.1.4, 16.1.3, 16.1.2, 16.1.1, 16.1.0, 16.0.1, 16.0.0, 15.1.10, 15.1.9, 15.1.8, 15.1.7, 15.1.6, 15.1.5, 15.1.4, 15.1.3, 15.1.2, 15.1.1, 15.1.0, 15.0.1, 15.0.0, 14.1.5, 14.1.4, 14.1.3, 14.1.2, 14.1.0, 14.0.1, 14.0.0, 13.1.5, 13.1.4, 13.1.3, 13.1.1, 13.1.0
SIP ENUM Resolution Capability using
iRule
DNS team has developed an iRule called RESOLV::lookup to perform a DNS query . From release
11.5.0, its capability was improved to support resolving NAPTR and SRV addresses as well. SIP
ENUM resolution mainly involves resolving Telephone number to an IP address. This process
normally involves 4 steps namely
- Normalizing the telephone number to an ENUM address format.
- Perform NAPTR resolution on ENUM to retrieve SRV records.
- Perform SRV resolution to retrieve Domain Name records.
- Perform DNS query to retrieve the IP Address.
RESOLV::lookup with its new capabilities could potentially be used to resolve ENUM to IP
Address.
Eg: NAPTR resolution to retrieve SRV records.
RESOLV::lookup @$static::dns_vs inet -naptr "4.4.2.2.3.3.5.6.8.1.4.4.e164.arpa"
