Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Uživatelský manuál Strana 328

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774
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
CSCsm86039
Symptoms: After switchover, DHCP relay is unable to forward the DHCP REQUEST received from
client during RENEW to the server.
Conditions: Occurs when unnumbered DHCP relay with server address configured under class
submode in relay pool config mode.
Workaround: Configure the server address directly under relay pool mode (rather than class
submode) or under the interface (helper address).
CSCsm86236
Symptoms: The standby RP reloads continuously.
Conditions: This occurs on a router in the SSO mode when the no address-family <name>
command is followed rapidly by a address-family <name> command in the "vrf definition"
sub-mode.
Workaround: Wait for a few seconds to reconfigure the address family after deconfiguring it.
CSCsm87634
Symptom: In the police flow command, the burst value may be different from the value that was
inputted.
Conditions: The symptom is observed when using the higher ranges of burst values, since the value
is right-shifted before making a capability check.
Workaround: There is no workaround if values closer to the upper limit are used. Additionally, if
cir=128000, the issue will not occur as cir%8000 is 0 and hence the police factor is 0, so the
right-shift does not take effect.
CSCsm87721
Symptoms: Dialer Cisco Express Forwarding (CEF) with IP accounting fails with packet counters
returning zero for the member interface.
Conditions: This happens when ip accounting output-packets configured on NAS. The NAS is
being checked for show adjacency detail which returns 0 packets and 0 bytes for the member
interface.
Workaround: There is no workaround.
CSCsm87959
Symptoms: An HSRP IPv6 address may become:: if the IP address of an interface is changed.
Conditions: At least one HSRP IPv4 group should exist on the interface.
Workaround: Delete the group completely from the configuration, and then reconfigure it.
Once the problem occurs, the HSRP IPv6 group must be deleted and re-added.
CSCsm88232
Symptoms: Router crashes, resetting line cards and toggling 600,000 BGP routes.
Conditions: Occurs when the system scale limit is exceeded, as there are more than 1200
unprocessed IPC messages. CPU stays at 100% for a long time.
Workaround: There is no workaround.
CSCsm88279
Symptoms: Line card fails to boot when there are routes in the routing table.
Conditions: This problem is seen very rarely with a large routing table.
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