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Flash
Forwarding
GRE
Hardware
Copyright © 2010, Juniper Networks, Inc.
When installed in the ERX1440 router, the GE-HDE line module delivers full
bandwidth of 4 GB per line module (2 GB at the ingress and 2 GB at the egress) only
when installed in slot 2 or slot 4, and when the SRP-40G+ module is used in the
router. When installed in any other ERX1440 slot, the GE-HDE module delivers a
maximum bandwidth of 2 GB per line module (1 GB maximum at the ingress and 1 GB
maximum at the egress). Therefore, of the maximum 96 possible ports for the
module in an ERX1440 chassis (that is, 8 ports in each of 12 slots), full bandwidth is
delivered only on a maximum of 16 ports (those in slots 2 and 4).
When the GE-2 line module or the GE-HDE line module is installed in either the
ERX1440 router or the ERX310 router and both ports are active, line rate performance
is achieved only with packets that are 174 bytes or larger. The line module might not
achieve line rate with packets that are smaller than 174 bytes.
Flash cards manufactured by Wintec are present on some currently deployed
routers. When you upgrade the JunosE Software on such routers, the firmware on the
flash card controller is automatically updated during diagnostics. During this reboot,
the software runs an integrity check on the file system to verify that the firmware
update did not corrupt the contents of the flash card. This integrity check is an
expected side effect of the enhanced firmware available in this release. The integrity
check does not indicate a problem with the flash card or its contents.
VPLS forwarding does not function properly when any of the following conditions
occur:
MLPPP interfaces are used
L2TP is used with sequence numbers enabled
GRE is used with sequence numbers enabled
A memory leak of about two percent can occur on the ES2 10G LM and result in a
module reset when a large number of successive SRP switchovers take place with
active DHCP clients.
When you shut down the only outgoing IP interface to the IP destinations of GRE/IP
tunnels, the tunnels remain in the up state rather than transitioning to down. As a
consequence, all IP routes that use these tunnels as next hops also remain in the
routing table.
SRP modules with only 1 GB of memory do not work reliably in ERX7xx and ERX14xx
routers running JunosE Release 8.1.0 or higher, and may experience system resets
due to an out of memory condition. However, the ERX310 router still supports 1 GB of
memory in the SRP-SE10 module.
Work-around: Upgrade your SRP module memory to 2 GB for all ERX7xx and
ERX14xx routers running JunosE Release 8.1.0 or higher.
Do not include a not protocol clause in any classifier control list for policies attached
to an interface on an ES2 10G Uplink LM. The not protocol functionality is not
available for this module.
Release 11.3.0
Known Behavior
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