Subscriber Host Identification Attributes
Page 234 7750 SR RADIUS Attributes Reference Guide
Typically only a single (set of) attribute(s) is used to target a host or a number of hosts: “NAS-
Port-Id + IP” or “Acct-Session-Id” or “Alc-Subsc-ID-Str”. In case that both “NAS-Port-Id + IP”
and “Acct-Session-Id” attributes are specified to identify subscriber hosts, only the host identified
by “NAS-Port-Id + IP” will be targeted. If the identified host is not part of the hosts that would be
identified by the “Acct-Session-Id” attribute, then the CoA will be NAKed with [101] Error-Cause
attribute value 503 Session Context Not Found.
For example:
Change of Authorization(43) id 224 len 81 from 192.168.1.1:32772 vrid 1
SESSION ID [44] 22 24ADFF0000003D5107AB80 # priority 2
NAS PORT ID [87] 12 lag-1:10.300 # priority 1
FRAMED IP ADDRESS [8] 4 172.1.2.251 # priority 1
VSA [26] 15 Alcatel(6527)
SLA PROF STR [13] 13 sla-profile-1
The CoA targets the host identified with the combination of [87] NAS-Port-Id and [8] Framed-IP-
Address (prio 1) only if the host is also identified by [44] Acct-Session-Id (prio 2), else the CoA is
NAKed.
Following attributes are accepted only if the CoA is targeted to a single host:
• [26-6527-14] Alc-Force-Renew
• [26-6527-15] Alc-Create-Host
• [26-6527-98] Alc-Force-Nak
• [26-6527-130] Alc-AA-Transit-IP
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