Cisco 2600 Series Operation Manual page 61

Table 6-4 4-Port and 8-Port Asynchronous Network Module Interface
Numbering (continued)
Slot Number Interface Numbers
(4-Port Module)
1
2 33–36
1
3 49–52
1 Cisco 3640 router only.
To prevent this conflict, Cisco IOS Release 11.2(7)P, which is required to operate 16-port
and 32-port asynchronous network modules, checks when it boots for the presence of
4-port and 8-port asynchronous/synchronous network modules configured as
asynchronous. If if finds any, it rewrites the starting configuration in nonvolatile random
access memory (NVRAM), if necessary, to adopt the new line numbering scheme for these
modules, as shown in Table 6-5.
Table 6-5 New 4-Port and 8-Port Asynchronous Network Module Interface
Numbering
Slot Number Interface Numbers
(4-Port Module)
0 1–4
1 33–36
1
2 65–68
1
3 97–100
1 Cisco 3640 router only.
When an automatic configuration update is performed, the following message appears:
Line number convention changed from 16 lines/slot to 32 lines/slot.
4-Port and 8-Port Interface Numbering
Interface Numbers
(8-Port Module)
33–40
49–56
Interface Numbers
(8-Port Module)
1–8
33–40
65–72
97–104
Connecting Serial Network Modules to a Network 6-9