System Management
Basic System Configuration Guide 279
A couple of configurable options are supported. The first option is referred to as the Label-IP
Hash option and is designated in the CLI as lbl-ip. When enabled, the hash algorithm parses
down the label stack and once it hits the bottom of the stack, it checks the next nibble. If the
nibble value is four or six then it will assume it is an IPv4 or IPv6 packet. The result of the
hash of the label stack, along with the incoming port and system IP address, is fed into another
hash along with source and destination address fields in the IP packet’s header. The second
option is referred to as IP-only hash and is enabled in CLI by entering the iponly keyword. It
operates the same way as the Label-IP Hash method except the hash is performed exclusively
on the source and destination address fields in the IP packet header. This method supports
both IPv4 and IPv6 payload and operates on packets received on an IP interface on an IOM3-
XP/IMM port only.
By default, MPLS packet hashing at an LSR is based on the whole label stack, along with the
incoming port and system IP address. This method is referred to as Label-Only Hash option
and is enabled in CLI by entering the lbl-only keyword.
The lbl-only, lbl-ip and ip-only hashing options can be configured system-wide and can also
be overridden on a per-IP-interface basis.
The ip-only option and the IPv6 payload support with the lbl-ip option can only be enabled
on IP interfaces on IOM3/IMM ports.
Ethernet Satellites
Ethernet satellite support allows a 7210 SAS-S chassis to act as a port extension for the 7750
SR host. In this configuration, all configuration and management functions are performed
through the host node. There is no need to manage the SAS-S node when it is in an Ethernet
satellite operations mode.
Table 37 lists the supported Ethernet satellite chassis.
The following primary tasks must be performed to configure an Ethernet satellite.
1. Create a software repository that specifies where the 7210 SAS-S should obtain its
correct software image.
Table 37: Supported Ethernet Satellite Chassis
Chassis Type Sat-Type String
24-port fiber es24-1gb-sfp
48-port fiber es48-1gb-sfp
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