Cisco Cisco IOS XE 3.5E Release Notes
46
Release Notes for the Catalyst 4500-E Series Switch, Cisco IOS XE Release 3.8.xE
Wireless Related Information
Activate ipbase or entservices license to enable daughtercard
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Restrictions:
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Supported only in ipbase and entservices license.
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Supported only in install mode.
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Supported only in cat4500es8-universalk9* (Crypto) images
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Requires rommon version 15.1(1r)SG5 or later
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Not supported in VSS
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SUP7E mode not supported
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Daughter card logs/crashinfo
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DC bootup logs are stored in bootflash (max 5 files, 1 per reload) with
dc_console_log-yyyymmdd-hhmmss-UTC format.
dc_console_log-yyyymmdd-hhmmss-UTC format.
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After DC becomes operational, the logs are forwarded to BB's syslog. DC logs have a prefix of
DC-SLOT<slot-no>:
DC-SLOT<slot-no>:
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DC crash info and system reports are stored at crashinfo-dc: and slavecrshinfo-dc: for active-dc
and stby-dc respectively
and stby-dc respectively
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DC can be disabled in install boot via “hw-module daughtercard disable” configuration. However,
you must save the configuration and reload the system for this to take effect.
you must save the configuration and reload the system for this to take effect.
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AP Joining the WLC:
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A new AP, which has only factory default configurations, sends an L3 Broadcast Discovery
message to learn and discover a WLC. Then the WLCs in the broadcast domain respond to this
request. This request also has the number of APs they can support and how many APs are
currently connected. The AP then would send a Join message to the least loaded WLC among
the list.
message to learn and discover a WLC. Then the WLCs in the broadcast domain respond to this
request. This request also has the number of APs they can support and how many APs are
currently connected. The AP then would send a Join message to the least loaded WLC among
the list.
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When there is an explicit primary WLC IP address configured on the AP, the AP sends a unicast
WLC discovery message to this specific WLC. There could also be WLCs that the AP learned
about in its past associations with the WLCs and it would send a Unicast Discovery to these
WLCs too. After the WLCs respond to this query, it matches with the primary WLC name and
IP address and if the match is found, it will join the WLC. If there is an invalid WLC name or
IP, then it will not match and it will join the other WLCs that would have responded to the
unicast query. If no other WLC responded to the AP, it would send an L3 broadcast discovery
message again.
WLC discovery message to this specific WLC. There could also be WLCs that the AP learned
about in its past associations with the WLCs and it would send a Unicast Discovery to these
WLCs too. After the WLCs respond to this query, it matches with the primary WLC name and
IP address and if the match is found, it will join the WLC. If there is an invalid WLC name or
IP, then it will not match and it will join the other WLCs that would have responded to the
unicast query. If no other WLC responded to the AP, it would send an L3 broadcast discovery
message again.
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There is a difference in behavior between how the Sup 8-E based MA or MC handles the Unicast
L3 Discovery packet as compared to the Catalyst 3850 Switch in MA or MC mode.
L3 Discovery packet as compared to the Catalyst 3850 Switch in MA or MC mode.
On Catalyst 3850 Switches—Any packet received on the management VLAN is terminated and
not forwarded to the unicast IP address in the discovery even if the address does not belong to
itself. When a primary base IP of the WLC is configured, the MA does not forward the unicast
packets and the AP therefore falls back to sending a broadcast discovery packet which
terminates on the Catalyst 3850 Switch.
not forwarded to the unicast IP address in the discovery even if the address does not belong to
itself. When a primary base IP of the WLC is configured, the MA does not forward the unicast
packets and the AP therefore falls back to sending a broadcast discovery packet which
terminates on the Catalyst 3850 Switch.
On Sup 8-E—On the Sup 8-E MA, however, the unicast discovery packet, if received on the
management VLAN, is forwarded to the right destination based on the IP address in the
discovery packet. Therefore, it reaches the destined WLC and joins it and not the SUP 8-E if
the destination IP address is other than the SUP 8-E itself. This results in AP joining the MC
and not the MA.
management VLAN, is forwarded to the right destination based on the IP address in the
discovery packet. Therefore, it reaches the destined WLC and joins it and not the SUP 8-E if
the destination IP address is other than the SUP 8-E itself. This results in AP joining the MC
and not the MA.