Brocade BigIron RX Series Configuration Guide - Manual (Page 1259)

BigIron RX Series Configuration Guide 1181
53-1002484-04
DHCP relay agent for IPv6
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Enabling support for network-based ECMP load
sharing for IPv6
Network-based ECMP load sharing is supported. If this configuration is selected, traffic is
distributed across equal-cost paths based on the destination network address. Routes to each
network are stored in CAM and accessed when a path to a network is required. Because multiple
hosts are likely to reside on a network, this method uses fewer CAM entries than load sharing by
host. When you select network-based ECMP load sharing, you can choose either of the following
two CAM modes:
• Dynamic Mode – In the dynamic mode, routes are entered into the CAM dynamically using a
flow-based scheme. In this mode routes are only added to the CAM as they are required. Once
routes are added to the CAM, they are subject to being aged-out when they are not in use.
Because this mode conserves CAM, it is useful for situations where CAM resources are
stressed or limited.
• Static Mode – In the static mode, routes are entered into the CAM whenever they are
discovered. Routes are not aged once routes are added to the CAM and they are subject to
being aged-out when they are not in use.
Displaying ECMP load-sharing information for IPv6
To display the status of ECMP load sharing for IPv6, enter the following command.
BigIron RX# show ipv6
Global Settings
unicast-routing enabled, hop-limit 64
No Inbound Access List Set
No Outbound Access List Set
Prefix-based IPv6 Load-sharing is Enabled, Number of load share paths: 4
Syntax: show ipv6
You can display the entries in the IPv6 forwarding cache; for example:
Syntax: show ipv6 cache [<index-number> | <ipv6-prefix>/<prefix-length> | <ipv6-address> |
ethernet <port> | ve <number> | tunnel <number>]
BigIron RX# show ipv6 cache
Total number of cache entries: 10
IPv6 Address Next Hop Port
1 5000:2::2 LOCAL tunnel 2
2 2000:4::106 LOCAL ethe 2
3 2000:4::110 DIRECT ethe 2
4 2002:c0a8:46a::1 LOCAL ethe 2
5 fe80::2e0:52ff:fe99:9737 LOCAL ethe 2
6 fe80::ffff:ffff:feff:ffff LOCAL loopback 2
7 fe80::c0a8:46a LOCAL tunnel 2
8 fe80::c0a8:46a LOCAL tunnel 6
9 2999::1 LOCAL loopback 2
10 fe80::2e0:52ff:fe99:9700 LOCAL ethe 1