R系列路由器上配置哑终端时屏幕切换问题的参考解决方法

R系列路由器上配置哑终端时屏幕切换问题的参考解决方法

问题描述：

路由器上配置哑终端屏幕切换。配置2屏或3屏切换正常，但配置4屏时，哑终端屏幕无切屏菜单回显，处于黑屏状态。但此时根据路由器侧配置选择业务对应的选项，仍可进入相应业务。
关键配置：
tty-app sender connection 0 10.xxx.xxx.22 9001 1 YouZhengChuXu
tty-app sender connection 1 10.xxx.xxx.22 9002 1 ZhongJianYeWu
tty-app sender connection 2 10.xxx.xxx.22 9004 1 wen-test
tty-app sender connection 3 10.xxx.xxx.22 9003 1 KaiFangJiJin
tty-app sender connection 4 10.xxx.xxx.22 9004 1 wen-test
tty-app sender connection 5 10.xxx.xxx.22 9002 1 ZhongJianYeWu
tty-app sender connection 6 10.xxx.xxx.5 8001 1 DianZhiHuiDui
tty-app sender connection 7 10.xxx.xxx.22 9003 1 KaiFangJiJin
tty-app sender connection 8 10.xxx.xxx.10 9001 1 BaoKanFaXing
firewall enable
!
interface Async1
physical-mode async
undo modem
undo detect DSR-DTR
baudrate 57600
async mode tty 1 0 4
async mode tty 1 1 5
async mode tty 1 2 6
async mode tty 1 3 7
tty menu-key 20
tty redraw-key 24
tty test-key 2
flow-control none
link-protocol ppp
!
interface Async2
physical-mode async
undo modem
undo detect DSR-DTR
baudrate 57600
async mode tty 6 0 8
flow-control none
link-protocol ppp
!

采取措施：

将tty-app命令中的app-name的字符数减少后，4屏菜单能在终端上正常回显。