7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
Context
configure>system>resource-profile>router
configure>system>global-res-profile>router
Platforms
Supported on all 7210 SAS platforms as described in this document
Description
Note:
The configure>system>resource-profile>router context is supported on the 7210 SAS-T,
7210 SAS-Mxp, 7210 SAS-Sx/S 1/10GE (standalone), and 7210 SAS-Sx 10/100GE.
The configure>system>global-res-profile>router context is supported on the 7210 SAS-R6,
7210 SAS-R12, and 7210 SAS-Sx/S 1/10GE (standalone-VC).
This command allocates route entries for /64-bit IPv6 prefix. Entries in the IPv4 forwarding table are shared
among IPv4 and IPv6 routes. Before adding routes for IPv6 destinations, route entries in the route lookup
table must be allocated for IPv6 addresses using this command. The remainder of the L3 forwarding table
is used for IPv4 routing entries. The system does not allocate any IPv6 route entries by default for /64-bit
prefix, and the user must allocate some resources before using IPv6.
Each IPv6 /64-bit route requires twice the amount of resources taken up by an IPv4 route. The number of
hardware route entries allocated by the software for IPv6 /64-bit routes is equal to twice the amount of the
value specified using this command.
Note:
• For this command to take effect, reboot the node after making the change.
• On the 7210 SAS-T, a separate route table is used for IPv6 /128-bit prefix route lookup. A
limited amount of IPv6 /128-bit prefixes is supported. The software enables lookups in this
table by default; no user configuration is required to enable IPv6 /128-bit route lookup.
• On the 7210 SAS-R6 and 7210 SAS-R12 with IMMv2, 7210 SAS-Sx/S 1/10GE (standalone
and standalone-VC), 7210 SAS-Sx 10/100GE, and 7210 SAS-Mxp, the IPv6 /128-bit prefixes
are allocated by software on boot up. The resources are taken from the IP FIB shared with
IPv4 and IPv6 /64-bit route entries. That is, unlike platforms like 7210 SAS-T and others, a
separate route table is not available in hardware on these platforms. This affects the scaling
of IPv4 routes when IPv6 /64-bit routes are allocated. See the following bullets for more
information.
• On the 7210 SAS-R6 and 7210 SAS-R12 IMMv2 card, 7210 SAS-Sx/S 1/10GE (standalone
and standalone-VC), 7210 SAS-Sx 10/100GE, and 7210 SAS-Mxp, each IPv6 /128-bit route
entry/address prefix requires 4 entries in the IP hardware route table, each IPv6 /64-bit
address prefix requires 2 entries and each IPv4 route entry/address prefix requires 1 entry.
• The creation of IPv6 IP interfaces without allocating IPv6 route entries is allowed. However,
only IPv6 hosts on the same IPv6 subnet are reachable.
• On the 7210 SAS-R6 and 7210 SAS-R12, the value configured using this command is used
across all IMMs in the chassis.
• The number of available IPv4 route entries in the L3 forwarding table is equal to the total
L3 forwarding entries supported for the platform subtracted by the total number of entries
3HE 18197 AAAB TQZZA
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