Specifications

116
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(4)
• CSCdk79550
When a Cisco AS5800 access server is reloaded with the D-channel in a shut condition, issuing a
no shut command on the D-channel does not bring the PRI back in service. This situation happens
on both T1 and T3 feature boards.
Workaround: Issue a shut command followed by a no shut command on the corresponding T1
controller to make the PRI operational.
• CSCdk80140
When multilink is configured over a serial interface, a lengthy delay is observed, typically with
large packets. The problem is seen only when fair-queueing is configured on the interface.
Workaround: Disable fair-queing.
• CSCdk80477
If you run Cisco IOS Release 12.0(1) with an RSM in a VIP2-40 with a PA-A3 port adapter, the
RSM might reload. When this happens, you can recover the RSM by disabling and reenabling the
ATM interface. There is no workaround.
• CSCdk81653
If you issue the show file [device:] filename command on a directory, without specifying the
filename, a Cisco router might reload. There is no workaround.
• CSCdk82708
No tag is created for the default route. Routing is possible, but requires that each packet goes to the
CPU (including LS1010). There is no workaround.
• CSCdk84552
The fix for a previous caveat (CSCdk77654) inadvertently requires that ACLs attached to crypto
maps include ICMP, even if ICMP packets are not intended to be encrypted. Note that ICMP is
matched when the IP protocol is specified in the ACL. There is no workaround.
• CSCdk84903
After you reload a Cisco 7500 series router that runs Cisco IOS Release 12.0(2.5)S, the packet over
E3/T3 (POET) DS3 interface comes up in a down/down state.
Workaround: On the DS3 interface, issue the shutdown command, then issue the no shutdown
command. This results in the interface changing to the “up/up” state.
• CSCdk86377
An interface reset or shut will zero the sustainable cell rate (SCR) of variable bit rate virtual circuit
(VBR VC).
Workaround: Recreate the VBR VC.
• CSCdk86406
When a virtual terminal line (vty) is used for a non-TCP session, such as for LAT, X.3 PAD or
V.120, the router loses approximately 100 bytes of memory for each session. There is no
workaround.
• CSCdk86664
If ip cef is turned on, encryption stops working. There is no workaround.
• CSCdk86801
Conditional debugging called does not trigger debugs when the number is called. There is no
workaround.